environmental city mohammad malouf
TRANSCRIPT
1
Index
Page No Title 2 The goal and the importance
of the project
3 Project location
4 Climate
6 The solution idea
7 Environmental manipulation
of the project’s elements
28 SWOT analysis of the project
30 Electrical study of the city
40 Waste rolled out from city
47 Survey
50-68 Architectural plans
69 Scientific References
2
Introduction:
The goal and the importance of the project:
The importance of the project from being as a guide to people for nature
preservation and to the riskiness of the human practices Which will have a
danger consequence in destruction our planet, our only home in this wide
universe. Therefore our responsibilities now is to do all efforts in changing
people’s habits and bad entry culture of waste recycling and encourage people
to walk and to use bicycles instead of cars, all those Practices may be fairly
simple, but they have a large level of importance.
With all challenges and
dangers that beset human
civilization and the
possibility of its subsistence
on Earth with the beginning
of oil resources scarcity and
the increasing of pollution
levels may put our future in
danger, so for these factors I
selected a piece of land in
Homs city in Syria to be
studied as an environmental
city which producing energy
not consuming resources.
3
Project location:
I selected the city of Homs for the project according to its importance and
being as the administrative center and the future tourist city in the country,
the land of the project is located in the western expansion area on a piece of
land bounded by a forest and the district of Al Waer to the south-eastern, the
proposed road to Msyaf to the south-west, the military college the north-east
and Ext Road to the north-west. The total land areas of 340 hectares has been
divided into four residential zones and select a zone of 100 hectare to be
designed as residential city.
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Climate:
Relative humidity:
Relative humidity of the city accounts about 60% and it reaches the highest
level in January up to 75% and gradually decreasing through other months.
Evaporation rate: The annual evaporation rate of about 100 mm and it decrease in winter and
growing in summer.
Wind:
The prevailing wind is
almost 85% western
turns into
northwesterly in
summer, And 15%
southwesterly in
winter. The wind Speed
average around
60 km \ hour and it
reach the highest level
in July and August.
Wind power caused by
the west gap which
separated the coastal
mountain chain of
Homs (Tripoli slot).
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Average rainfall:
A dry climate and an annual rainfall of 150-200 mm rate.
Heat rates:
temperature is an important factor in any design. The maximum temperature
is 21 C and the minimum temperature is 9 C.
Soil:
1. layer of agricultural soil with 0.3 mm of thickness.
2. Layer of stream gravel with some soft material
3. Volcanic rocks.
Movement of the sun:
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The sun Altitude angle run to 75 degrees in summer and 35 degrees in winter
at noon time, in addition the Altitude hit over 55 degrees in autumn and spring
in the similar timing.
In the summer the sun rises closer to the north-east and sets to the north-
west, while in the winter sun rises closer to the south-east and sets closer to
the south-west.
All north buildings interfaces in summer exposed to the sun in early morning
hours and the last sunset hours, while in winter the sun completely missed at
the north interfaces.
The best benefit of the city of Homs is the long hours of insolation throughout
the year at about 3000 hours spread over the year according to the following
table:
The solution idea:
I choose the shape of Al Werwar bird,
the most beautiful birds, which is
famous in Syria. By utilized the form
of wings and body during the
onslaught in carrying out a study of
the main streets of the city with some
addition modifications to fit the shape
of the environmental data for the
region.
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Environmental manipulation of the project’s elements:
Environmental manipulation for the site map:
1-Study of the city’s streets:
Depending on the streets Design Manual (Urban Street Design Guide) two
essential aspects take under consideration into the streets design.
First: (The prevailing wind)
The area is characterized western winds tend to the North West by 85% in
the summer and speeds up to 20 m \ s have been measured at weather
stations at 15 m height, by including the surface wind speed changes
according to the height, our air flow surface speed will be less than 20 m \ s
and It becomes in this project about 18 m \ .According to the following
table, we can distinguish between good and bad wind’s effects:
From the paintings wings of
butterflies which live in Syria and its
nice color distribution I designed most
of the public squares and gardens
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Land conditions Description Wind speed Smoke rises vertically Calm < 1 km/h
< 0.3 m/s
Smoke drift indicates
direction; leaves are still Light air
1.1 – 5.5 km/h
0.3 – 1.5 m/s
Leaves rustle; wind felt on
skin Light breeze 5.6 – 11 km/h
1.6 – 3.4 m/s
Leaves and small twigs
moving; light flags extended Gentle breeze 12 – 19 km/h
3.5 – 5.4 m/s
Small branches move; dust
and loose paper rises Moderate breeze 20 – 28 km/h
5.5 – 7.9 m/s
Moderate sized branches Fresh breeze 29 – 38 km/h
8 – 10.7 m/s
Large branches move; umbrella hard to use
Strong breeze 39 – 49 km/h
10.8–13.8 m/s
Whole tree moves; hard to walk against the wind
High wind 50 – 61 km/h
13.9 – 17.1 m/s
Twigs break from tree; extremely difficult to walk in
wind
Gale 62 – 74 km/h
17.2–20.7 m/s
Branches break from tree; small trees blow over
Strong gale 75 – 88 km/h
20.8–24.4 m/s
Trees broken or uprooted; structural damage imminent
Storm 89 – 102 km/h
24.5–28.4 m/s
Widespread vegetation and structural damage
Violent storm 103–117 km/h
28.5–32.6 m/s
Severe widespread vegetation and structural
damage
Hurricane force ≥ 118 km/h
≥ 32.7 m/s
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So we find that if the wind speed was 15 m \ s it can move the branches of
large trees and it has a bad impact on the pedestrian therefor it need to be
reduced by windbreaks.
In the winter the largest wind speed becomes about 5 m \ s, and it is an
relatively acceptable speed, but in cold weather those breezes considered
very harmful, but from the project site has a great feature that is located in
the wind shadow area of the Southern Forest. So this area will work like a
defense wall against the cold wind and it will help to reduce the damage
which will affect pedestrians and buildings either..
As a result to the previous study I oriented most of the city's streets
including the main roads to be open towards the west and the north-west
to receive useful wind in summer which can move the pollution mass
caused by cars and cooling the air to reach the required comfortable
temperature for pedestrians.
Second: (Solar Radiation)
Solar radiation is the most important influence on human being life and has
a significant effect on the thermal comfort of the human’s body including
the internal space inside buildings or within the urban environment.
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As we know the residential buildings in most cases are parallel to streets,
however streets orientation play an important role in guiding buildings.
According to environmental data buildings that directed toward (North-
West) (South East) or (North -East) (South-West) get insolation more than
others as a result of exposure many elevations to the southern sun rays.
In the reverse situation where the orientation of buildings perpendicular to
the basic four directions we have a single elevation exposed to warm
winter sunlight in the south, while depriving the rest of elevations from the
sun's warmth.
Accordingly, the streets have been directed toward the northwest to
achieve better insolation of buildings, and taking into consideration the
direction of the useful prevailing wind.
1-The use of windbreaks:
By observing the agriculture areas which provided with windbreaks, it cans
lowering the crossed wind speed after 20 m by 20-40% and 50% after 60 m
and by 93% after 120 m.
Windbreaks play an important role in ridding the wind dust and purification
without notice any impact on changing the direction of the wind, but if
there are gaps in the windbreak this may allow swirling air movement to be
occurrence.
The windbreaks put in the project land to be perpendicular to the western
and northern winds to reduce its speed without missing it. two belts of
bumpers was planted, first bumper is 50 m in width and parallel the
proposed road to Mesyaf so that it works to reduce the wind speed up to
40-50% to reach the acceptable level of the population, while the second
bumper is a parallel the main road which lead to the center and its mission
is to reducing the wind speed again after they have regained a part of its
power after passing the first bumper.
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Winter winds are harmful and I take the advantage of the nearby forest to
use it as a natural bumper.
2-Connected green surfaces system:
Landscaping and trees is the first and most important source of oxygen and
the best tool to absorb carbon dioxide whereby the one square kilometer
of planted areas produce around 350-500 tons of oxygen and absorbs
about 460-650 tons of carbon dioxide.
Trees has a large impact on increasing the amount of rain, reducing air
temperature and raise the humidity, Also trees leaves reflect 35% of the
solar radiation received and the temperature difference between green
lands and the surrounding areas is medium to 8-25 degrees.
Trees help in evaporation the soil around of 30-40% and that’s reduces the
soil dryness also increases the moisture of air around 15%.
Green lands has a significant impact on the air movement where the high
air pressure is formed in shaded arears cause by the low temperature
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,Subsequently the air moved to the low pressure zone in light where is the
temperature is high and help cooling it up.
One hectare of green lands in the city absorbs 8 KG of carbon dioxide per
hour, equivalent to the amount of what 200 people through away during
their breathing. We have 54 hectares from green spaces in the city which
absorb 432 KG of carbon dioxide per hour, and this is equivalent to 10 tons
per day and about 3784 tons of gas per year.
Experiments also show that one hectare of green plants absorb about 50-70
tons of dust per year thereby it means reducing the concentration of dust
in the air around 30-40%.
I designed green belts to protect against noise with 50 m distance away
from the main streets and between 10-30 m to the secondary streets.
I also used trees which dripping leaves in winter around the buildings to
allow the sunlight to enter internal spaces.
1-private cycling road network:
Due to the increasing trend to use bicycles according of its positive
effects on health and the environment, the project has an integrated
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system for bicycles to ensure safety and ease of movement for all its
users and that by providing the following:
Paved roads fully separated from cars traffic and connected with
secondary pedestrian trails which lead to residential buildings.
Places to park bikes and seconded parks connected directly with
the transport network and along the course of the bike line.
Mini stations to fill the air with automatic device and to sell some
required pieces for bicycles.
Shaded cycling routes to secure people in all weather conditions
whatever warm or cold.
electronic system station to lend bikes works on card.
Special roads for buses:
It is a lane adjacent to the road without get separated, distinctive with
different color and only available for public transport.
Along the pedestrian sidewalk there are many waiting spots besides the
bus line designed to be easy to use both for people and buses.
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These methods allow buses to have easy movement by avoiding the
traffic and reduce the time of stops for embarkation by selecting specific
places to boarding the bus.
Sidewalk cafes:
The idea of the sidewalk cafe is common in many countries over the world
especially which has a moderate weather. They are distribute in certain
places serve pedestrians and those who are going to work at the morning
and want to have a cup of coffee.
Pedestrian shaded roads
Shading the main and the secondary pedestrian streets and not only by
using trees but also by providing sunshades to protect footpaths in
winter from rain and to encourage people to walk instead of using cars.
For the points of intersection between the footpaths and road vehicles
they have been studied in a way that allows pedestrians to cross only
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from specific clear places for cars so that both sides of the road narrows
to each other to allow pedestrian crossing and to give a warning to cars
that there is a crossing point.
A slop has been designed in each crossings point to facilitate the
movement of people with special needs.
Environmental processors for buildings:
Elevations floor area
Low floors are considered the most floors in the building which the take
advantage of the cold surface air flow, and the shadows caused by
surrounding trees so the city’s buildings height designed to be between 4 to
7 floors and the commercial buildings to be between 2 to floors.
Buildings orientation
Buildings elevations designed to be deviate ˚45 form the major geographic
trends to provide better insolation for elevations where two faces from the
building exposed to the southern sun instead of one, so we get a longer
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insolation in winter with the possibility to generate electricity in those
elevations by using sun breakers provided with solar panels.
The other positive impact of deviation elevations is to control prevailing
western winds and leads it to hit the building corner and relieve the
pressure power on walls and also reduce the negative pressure which is
created behind the building and it has more power than the original wind
power, so it consider very dangerous in case of storms and strong winds
which they can pull off the glass surfaces from building.
As result to buildings orientation towards (northwest) (south-east) allows
wind to flow on each side of the building easily and also gives a better
insolation interior spaces.
Green roofs and terraces
amends the land which used to create designed to All green roofs
by using green roof and provided wasof truncated land buildings, 108%
planted terraces according to several technical methods:
Equip roofs and cars parking along roads with Grass Pave:
This system works to protect grass
roots from getting damage
caused by the usage of grass
form pedestrians and cars,
also works on drainage the
surplus of using underground
pipes to be reused for
irrigation.
Experiments have shown
that Grass Pave system has a
great ability to carry large
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weights up to a large passenger plane.
This system is relatively easy to install simple and doesn’t cost so much.
Pedestrians, vehicles and bicycles can use surfaces which covered with
Grass Pave even in the worst weather conditions.
Spaces dedicated to the cultivation different types of plants:
The ceiling processing
by proper insulation
and drain system for
rainwater to provide
the possibility of the
ceiling planting.
This kind of design allows planting all kind of plants without being able to
walk on it.
Planted roofs and terraces can compensated around 108% of total area
which was using in construction..
The following table shows the planted areas within each residential model:
Building type
Construction
area
m2
Green surfaces
area within
building
m2
Total green
areas within
each type
m2
The
proportion
of green
space of
built-up area
Multiple floor
550 600 54000 109%
complex 422 457 19651 108%
Villas 220 - - -
Total area for green spaces m2 73651
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Horizontal and vertical sun breakers and Mashrabiyya1:
Utilization of horizontal sun breakers in South elevations to allow the
sun to enter the architectural internal spaces in winter and to
prohibit it from entering in summer.
Vertical Sun breakers used in Western elevations to protect from the
bad influence of the sun set.
All sun breakers provided with solar cells to generate electricity.
Mashrabiyya designed to use in some parts of the buildings to
maintain privacy while allowing the sunlight to enter spaces.
1: Mashrabiyya it is an Arabic window used in old cities to allow the sun light entering the
building without losing privacy.
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Solar heating system:
Homs is characterized by good hour’s insolation during the year and this
feature is turning into heating the architectural spaces through an
integrated system that heats the water after passing special tubes
composed of two glass layers separated on each other by a vacuum space
to provide complete thermal water isolation.
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Water passed after heating to an isolated tank on the roof of the building
to move in pipes within the walls down to the building’s floors to enter into
a thermal water radiators where the temperature start to spread into the
architectural space then returns as cold water again to the surface to be
heated again.
Solar cooling system:
]
The goal of the solar cooling system is to provide a cooling method in some
parts of the world where electricity is not available.
Solar Cooling offers a multi-purpose cooling technology does not harm the
environment and do not require batteries, in addition it has low price.
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There are two types of solar cooling system:
First
A clay pot consisting of two layers of brick
with a layer of wet sand between them and
this vessel put in the sun all the time.
The sun's heat is working to raise the water
temperature in the sand to reach the point
of evaporation to turn water into steam
through the pores of the bricks, turning
water from liquid to a gas consumed an
amount of which help to decrease the
temperature of the materials contained
into vessel.
Second
This system replaces the brick with two layers of
aluminum the inner one is solid and the other outer
layer contain pores to allow water to turn into stream.
The first idea was used in buildings according to its
flexibility and the relatively low cost.
The system works using most of the solar heating
system parts of pipes and radiators.
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Waste disposal and biogas system:
The city was processing organic waste where every home is equipped
with a grinding waste disposal in kitchen to process the remnants of
vegetables and food with an addition amount of water during the
grinding process to have an organic liquid which through away with the
waste coming from the toilet and turn this liquid into sewage pipes
which separated totally from the conventional sewer system.
The organic liquid collect from all buildings within ground pipes to
reach the digestion station and where they need two weeks to
fermentation and transformative into useful gas which can be used into
cooking and generating power.
All buildings supply with pipelines to throw inorganic waste such as
plastic, glass and paper to be assembled separately within equipped on
containers and dispose it periodically.
The usage of solar energy to generate electricity:
Solar energy consider as environmentally friendly and clean energy which
doesn’t have any harmful emissions to nature.
The project area characterize by long hours of insolation throughout the year,
making it a very good place to solar cells where exploitation the sun breakers
in all residential buildings to generate electricity.
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Project data:
Population= 10,000 inhabitant
Total land area= 100 hectares
The forest area = 10 hectares
City area= 90 hectares
Divide the district into three sections, each district includes about 3,500
inhabitants.
The average number of the family members= 5 inhabitant
The number of families 10000/ 5 = 2,000 families
Constructed area:
Allocated 27 m2 to every person: 10000 * 27 = 270000 m2 = 27 hectares
Impurity population density: population /Land Area = 10000/ 90 = 111 people/hectares
Net Population density: population/built-up area = 10000 / 27 = 370 people/hectares
Building types:
1. Connected housing consisting of 4 floors with planted surfaces constitute
50% of the built-up area.
2. Complex housing with gardens consisting of 4 floors constitute 35% of the
built-up area.
3. The two-story villas constitute 15% of the built-up area.
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Educational uses:
Kindergartens:
4% of the population are children >> We have 400 children
Allocate to each child 15 m2 >> allocated to kindergartens area = 6000 m2 = 6
acres = 0.6 hectares
0.7% of the land area
Suppose to have are 6 kindergartens, kindergarten space per 6000/6 = 1000m2
Basic Education:
18% of the population >> We have 1,800 students
Allocated to each pupil 12 m2 >> allocated to basic education schools = 21600
area m2 = 2.2 hectares or 2.4% of the land area
Each school has 16 Division two of them for each stage and in each division 25
students
18 *25 =400 students per school
The number of schools = 1800/400 = 4 schools
School area = 21600/4 = 5400 m2 area
Secondary Education:
4% of the population >> We have 400 students
The school has 16 divisions and each division contains 25 students
The number of students per school = 16 * 25 = 400 students
Allocates 12 m2 to each pupil >> for Secondary Schools, area 4800m2 = 0.5
hectares 0.6% of the land area.
We have one school with total area 4800 m2
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Commercial areas:
2 m2 to each person>> allocated for commercial areas = 20000 m2 = 20 acres
= 2 hectares
Or 2.3% of the land area
Green areas:
Allocated 25 m2 to each person >> total area for green space = 250000 m2 =
25 hectares
Allocated 2 m2 to each person from gardens and playgrounds >> shall be our
recreational areas area
20000 m2 = 20 acres = 2 hectares
Total area of green areas 27 hectares or 30% of the land area
Health centers:
Allocated 0.2 m2 to each person>> area of clinics = 2000 m2 = 2 acres = 0.2
hectares or 0.3% of the land area
One clinic in the neighborhood center
Total area 2000 m2
Service range 3 and 5 km
Post Center:
Allocates 0.04 m2 per capita >> Center area 800 m2 = 0.1 hectares 0.2% of the
land area
Service range 1 km
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Religious center:
0.5 m2 of area Per capita 0.5 * 10000 = m25000 = 0.5 hectares 0.6% of the
land area. Service range 800 m
Distribution table of the population in districts:
Blocks number of
villas
Blocks number of
Complex type
Blocks number of multi floor
type
Population District location
14 19 18 2460 South Western
12 14 34 3480 South Eastern
- 9 40 3650 North Western
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Population density table:
Impurity Population density y People \ hectares
Net population density People \ hectares
The average
population
The averag
e numbe
r of familie
s
Number of
blocks
Total area for
construction
m2
Total numbe
r of flats
Flats numbe
r in each floor
Floors numbe
r
Building type
180 450 7200 1440 90 1300 16 4 4 Multi-floor
90 250 2150 430 43 1000 10 3 7 complex
20 32 115 23 23 1600 1 1 2 villas
Spaces apartments table:
Green
area
Terraces area
m2
Area without terrace
s
Number of
persons
Rooms Number
of nighttime Section
Rooms Numbe
r of daytim
e Section
Apartment type
- 12 65 1-2 1 1 Studio
6 26 100 3-4 2 3 One floor(1)
20 50 140 4-6 3 3 One floor(2)
30 50-70
120-140
4-6 3 2 Duplex 1
40 4-6 3 3 Duplex 2
Services table:
Service range
m
Total area
m2 Building area m2
number Type of service
200 6000 1000 6 Kindergartens
750 21600 5400 4 Basic schools
2500 4800 4800 1 Secondary schools
- 20000 1000-5000 7 Commercial
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Center
800 2000 2000 1 Health Center
800 5000 5000 1 Religiousness Center
1000 800 800 1 Administrative center
Project SWOT analysis
Weaknesses Strengths
The large distance between the project's land and the high-level of services, such as universities and administrative centers which located in the center of Homs.
A train rail adjacent to
the project’s land and its negative noise impacts on the residential area.
A green forest in the nearby works as a buffer to the southern Western cold winds where the project is located in the wind-shadow zone.
the occurrence of the project in empty area which gives the freedom in design, in contrast to reconstruction projects
The project is far away from the pollution cone caused by Homs refinery factory.
The project is the first land area receives westerly pure winds
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coming from the prairies
Opportunity points Risks points
The possibility to design a useful network for bicycles all its accessories.
Design city streets and with better organize.
The possibility to use the near forest as biogas reservoirs and place to save the rainwater and used it to Irrigation.
A bad organized district adjacent to project’s land to the south-western and that consider as a negative point in the region future.
The proximity to a military zone, which limits the possibility of future expansion.
The risk of the train rail on the residential area.
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Electrical study of the city
The usage of the traditional power resources has a great bad effect both on the environment and the human being and a great harmful impact in the future, in addition it cost a lot of money among all kind of renewable resources.
As the following table we can see a large decrease in of electricity production cost which coming from renewable sources in contrast of the electricity production from oil and nuclear sources.
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Average daily household consumption:
Device type lectricity E
w ability Quantity Working
hours
Daily consumption
wh
Refrigerator 120 1 24 2800
washing machine
cold water
200 1 0.3 60
dryer 1500 1 10min 250
washing machine hot
water
2500 1 0.2 500
TV 180 1 3 540
Garbage disposal
450 1 10min 75
Dish washer 1200 1 0.75 900
Laptop 40 1 8 320
lights 40 12 8 3840
Hair dryer 1500 1 5min 125
Microwave 1500 1 10min 250
Water heater
900 1 1 900
TV Screen 330 1 8 2640
Air conditioner
1100 1 4 4400
Mixer 300 1 2min 10
Coffee machine
1500 1 3min 75
fan 100 3 6 1800
Receiver channels
30 2 8 480
iron-steam 1225 1 0.5 600
Mobile charger
5 4 4 100
Total 20665
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Wind energy:
Wind in Syria:
By the UNDP United Nations grant and informant "Rizzo" Danish experience was completed Atlas winds in both Arabic and English, and included a wind atlas About wind speeds taken from / 60 / wind station in the country covering most of climatic zones in the country, and this information includes the results of wind measurements for / 10 / years (1979-1989), and this information can be considered as a basis for estimating the wind energy available to use it in generating power. this atlas prepared wind map in Syria where it was splitting the country into / 4 / wind areas, the first region where the wind speed are between / 5 m / s / to /11.5 m / s / this region covered around 54000 km2 it can be consider as a candidate for future wind farms.
Wind energy consider as a
safe environmental energy
without pollutants harmful to
the environment. After the
global warming the world is
heading to adopt the
renewable energy sources, by
reducing the usage of fuel. The
technology now is seeking to
reduce the cost of wind energy
to reach more explanation.
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Introduction:
Wind turbines consider as eco-friendly, it does not have air pollution and
doesn’t give of any of carbon dioxide or chemical compounds such as
hydrocarbons like conventional power factories do, as well as we know it
doesn’t cause any waste disposal or radioactive garbage like nuclear reactors.
And what wind turbines characterize that the only bad impact on the
environment is trapped where the turbines farm located.
The environmental impacts of wind turbines include the
following:
The noise caused by the wind turbine.
Shadow impact of the turbine.
Interfering with radio signals.
The land used to build the wind farm.
The influence on birds’ life.
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Wind Turbine Noise
Wind turbine while running produces a kind of audible noise from a specific distance, and May some type of turbine has unlikely noise so it cannot be located in residential areas.
The noise solution associate to the design and the operational methods.
Noise sources in the wind turbine:
1. Aerodynamic noise:
This noise happened when the air flow go through the rotor and it consider as the primary source the wind turbine noise, and this kind of noise we cannot avoid it or even reduce it. The air flow through the rotor blades produce sound similar to the sound of the air flow through the plane’s wing as a result is creating a buzzing sound field about a 1000 Hz frequency.
2. Mechanical noise:
The gearbox is the main source of the wind turbine noise, where practically
there is no gearbox work quietly. Since Gearbox exist within the wind turbine
the noise will move to all the mechanical parts of the turbine and also go into
the tower and the cockpit and the value of the noise will be exposed to be
greater. And this kind of noise can be avoided or reduced by using some
materials to help absorb the vibrations coming from the Gearbox and other
mechanical parts - such as rubber - that is entered with the turbine structure.
Noise emissions from modern turbines:
Noise emissions coming from modern turbines have been reduced during the past fifteen years, through the new developments and take care of all the details in the design.
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Small-sized turbine with rotor diameter up to m20 and capacity of up to 100 by the noise reach 90 dB A
A medium-sized turbine with rotor diameter up to m 40 and capacity up to 500kW, the noise reach100 dB A
Large-scale turbine with rotor diameter diameter up to 70-80 meters and a capacity up to 2000 kW the noise reach 103-105 dB A
Using huge turbine which can reach several megawatts and with a rotor diameter of 100-120 meters the noise will hit the 105- 110 dB A
Permitted determinants audio noise levels:
The permitted value depending on the nature surrounding the area whether it is industrial zone or it is mixed industrial and residential area and depending on the working time during night or day.
The noise value allowable in most European countries is 50 dB during the day and 40 dB at night.
Minimum distance which separate between the turbine and the residential area without a barrier are 100 meters.
Minimum distance which separate between the turbine and the residential area with a natural barrier such as trees are 80 meters.
Sound generated affected by a number of factors:
1-Geometric location of the sound source, the height and the distance between the sound source and the location of the project.
2-Weather conditions such as wind speed, direction, humidity and temperature
3-Topographical conditions at the site (vegetation, buildings, ....)
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Shadow Effect
Impact on Bird Life:
Studies have shown that the number of birds that kill because of wind turbines
do not exceed 0.01% of the birds that are killed each year.
Interference with Radio and Television Signals:
Wind turbines have an impact on the electromagnetic waves, air navigation signals and the communication signals .we have to note that this effect is almost non-existent or negligible, but for the perfect study of the project we should take this issue into consideration. We avoid interference with
Like all other types of large buildings,
wind turbines have a shadow in the daily
sun light, in the case where the turbine is
stopped it similar to any kind of building,
but when it became running, the turbine
blades start cutting the sunlight rays
which lead to intermittent undesirable
lighting result, and of course this shadow
affect people who live near the turbine,
causing disruptions to these people and a
harmful frequencies and disorders in
lighting between 2.5 to 3 Hz.
As a result to the Earth rotation, the
shadow change its location periodically,
and according to European studies the
maximum time allowable to shadow
placed on point like a home that is 30
hours per year, or 30 minutes a day.
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navigation signals by selecting the appropriate location of the wind turbine, the local television and radio signals are used everywhere. In the United States and Sweden on some the television signal..
Wind Farm design: To have a reasonable farm design we must separate among the turbines
dimensional (5D-9D) on the direction of the prevailing winds and (3 D-5D)
perpendicularly on direction of the wind.
Where D is the rotor diameter.
Compared with traditional gas stations, the production of kilowatt in one hour needs around 223 grams from fuel.
Wind turbine types:
1- DW 52/54
Electricity ability: 500 KW
Rotor diameter: 51.5 m
The length of the blade: 23 m
Minimum air speed before stopping:3 m/s
Maximum air speed before
stopping:25m/s
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Tower height: 35 m
2- Capture northern power 100kw
Electricity ability: 100KW
Rotor diameter: 21 m
The length of the blade: 9 m
Minimum air speed before
stopping:3.5 m/s
Maximum air speed before
stopping:25m/s
Tower height: 23 m
ability electricitywith DW 52 from typewind turbine In Project there is one
around 500 KW and 11 wind turbines from type “Capture northern power
.100 KW lectricity abilityean “with
: 500+ (11 * 100) = 1600 kWbecome lectricity abilityetotal wind Our
On the grounds we assume that the wind turbine is working 16 hours per
day, so the daily production is 16 * 1600 = 25600 kWH
Since the average household electricity consumption of 20 kwh daily, We
provided an amount from electricity which can cover 1280 houses in
equal to 64% of the city's need for electricity.
Turbines shadow impact on the population:
Wind turbines were located in the isolation area 70 m distance far away from
the residential area to provide the sound insulation and keep the shadow of
the turbine far from buildings.
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Solid waste energy (biogas): Each cubic meter of methane generates 2 kWh
We have the amount of gas produced from the city's waste and excess
from the consumption of cooking is 38720 cubic meters.
2*38720=77440 kWh /Month
Daily production from electricity
77440/30=2580 kWh \ Today
Daily consumption of the house around 20 kWh \ today
2580/20=130 houses supplied with energy
Biogas covered 6.5 % from the city's need from electricity.
Solar power:
Each 1 m2 from solar panels produce approximately 100 wh in good operating
conditions, accordingly our amount of electricity produced became as the
following table.
Building type
Total area for
solar panels in
the building
Total area for
solar panels
within all blocks
Exposure hours to
sun
Power produced
KW\H
Daily power
produced
KW\Day
Four-story
building
97 8730 8 873 6984
complex 212 9116 8 911 7288
villa 40 920 8 92 736
Total area for panels 18766 Total power produced 15008
Solar power cover 750 houses equal to 37.53% from the city’s need
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Organic waste rolled out from the city:
Each person rolls out the equivalent of 4.3 pounds of waste per day.
Each one pound equals 0.45 kg, equivalent to 2 kg per day per person.
Single family throws out approximately 10 kg of waste per day.
Organic waste constitutes about 80% of the total waste posed by the family
and that equivalent around 8 kg per day from organic waste.
Organic waste rolled out in two methods:
First (Garbage disposal):
This system is used in the most developed countries in the world where it
consider as a condition required in the apartment to get a license.
It similar to the washing dishes sink, but with insurance cover to protect and
an engine with blades for grinding at the bottom.
Leftovers and vegetables and all kinds of organic waste from chores in the
kitchen, where grinding with an addition amount of water about 5 liters per
grinding process to move beyond this liquid organic waste through the sewage
pipes.
By using wind, solar and biogas energy, we have provided
43188 KWH as a daily average production from about 108%
from the city's need from electricity. This power can cover the
entire city’ need and also supply the public network.
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Second (through toilets):
The water which used in toilet estimate in each time about 20 liters.
Considering that, the average daily use of toilet is 3 times 3 * 20 = 60 liters of
water to each person.
Subtractive water for all family members 60 * 5 = 300 liters of water.
The total amount of organic waste is estimated about 330 liters of water +8
kilogram from solid waste as a total we have 350 liters from organic liquid.
Daily subtractive organic waste:
First type (four-story building):
Each building contains 16 apartments.
16 * 8 = 128 kg from organic solid waste disposal by the building every day
16 * 350 = 5600 liters from organic liquid.
We have 90 blocks→ 90 * 128 = 11520 kg organic solid waste.
90 * 5600 = 504 000 liters = 504 cubic meters from organic liquid.
Second type (complex):
Each building contains 10 apartments.
10 * 8 = 80 kg from solid organic waste.
10 * 350 = 3500 liters from organic liquid.
We have 43 blocks→ 43 * 80 = 3440 kg organic solid waste.
43 * 3500 = 150 500 liters = 150.5 cubic meters of organic liquid.
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Third type (villa):
Each villa rolls out 8 kilograms of solid organic waste per day
We have 26 villas → 26 * 8 = 208 kg of organic solid waste
26 * 350 = 9100 = 9.1 liters cubic meters of organic liquid
The total weight of solid organic waste to the city
11520 + 3440 + 208 = 15168 kg = 15 tons
Organic liquid rolled out from the city:
504 +150.4 +9.1 = 663.5 cubic meters
Or about 650,000 liters or 650 cubic meters of liquid organic.
Those numbers can utilized in calculate the sewage diameters and in the
digesting tanks design for the biogas production.
Water consumed within the city:
Each person consumes water for daily usage like (swimming-washing- cleaning
and cooking ...), equivalent to 200 gallons of water each gallon = 3.8 liters, the
consumed water reach about 760 liters per person.
Equivalent to 3,800 liters of water to each family
We have 330 liters from water used to subtracted organic waste
→3800-330=3470 liters the total consumed water
According to the buildings type:
First type (four-story building)
16 apartments within the building →16 * 3470 = 55520 liters of water
We have 90 blocks→ 90 * 55520 = 5 million liters = 5,000 cubic meters of
water
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Second Type (complex):
10 apartments within the building → 10 * 3470 = 34700 liters
We have 43 blocks→ 43 * 34700 = 1.5 million liters = 1500 cubic meters of
water
Third type (villa):
We have 26 villas →26 * 3470 = 90220 liters = 90 cubic meters of water
The total amount of water used for various household uses
5000+1500+90=6590 cubic meter of water every day
Note: 1000 liters is equal to 1 cubic meter
Biogas:
Biogas is different from oil and natural gas in a very
important point, which is considered as a clean
energy, process of its production is very simple
summerized to expose organic waste " animal and
plant waste" like Ruth and sawdust, to the digesting
process, and that by saving them in huge tanks away
from air, and in these circumstances the bacteria
analyzing those organic waste into methane gas,
including amounts from carbon dioxide ,hydrogen and
water steam .
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Raw materials required for the biogas production: Biogas produced from decomposition of the organic material in anaerobic environment including the following materials:
Fruits and vegetables
Food waste.
Ruth poultry and livestock.
Foliage and grass coming from weeding.
Non-printed paper.
Toilet paper and cardboard.
Biogas uses: Biogas is mainly used in the following fields: Cooking: Each capita consummate from natural gas about 0.5 cubic meters / day
Lighting: by using devices working on gas.
Power: by small generators can be customized to generate electricity.
Biogas components:
The data contained in the following table shows the most important
components of biogas, according to a study by the German Association for Gas
and Water.
Methane 70-60%
Carbon dioxide 40-35%
Water vapor 3.1%
Nitrogen from 0.01 to 5%
Oxygen from 0.01 to 2%
Hydrogen 0-1%
Ammonia from 0.01 to 2.5 mg / m³
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Hydrogen sulfide 500 mg / m³
Remaining material from the decomposition process: Black Water rich in nitrogen could be sprayed directly on the plants or dried
and used as dry fertilizer.
It was noted that the plants yields increase by 30 to 50% when get Irrigated
with digester water.
Calculate the amount of gas produced by the organic waste
decomposition and the amount of produced energy:
the city roll out 650 cubic meters of organic liquid every day and the anaerobic
decomposition process takes between 3 days to two weeks for depending on
the organic waste nature and the temperature should be between 35 C of the
37 C and by using some solar radiators we can keep save the digestion
temperature in winter.
Calculate the amount of organic liquid produced in two weeks
650*15=9750 cubic meter
Every 1,000 liters of organic liquid can generate between 1500 to 2500 liters of
biogas equivalent from 1200 to 1400 liters of methane.
9750 * 2000 = 19.5 million liters = 19,500 cubic meters of methane gas during
decomposition cycle.
Monthly production of methane is equal to 19500 * 2 = 39,000 cubic meters of
methane gas.
Each cylinder gas fulfill with 25 kg gas
1 liter from methane equals 0.178 kg
Every cylinder contains 140 liters of methane.
We have 2,000 families need up to 2000 gas cylinders in one month
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City consumption from gas →140 * 2000 = 280,000 liters = 280 cubic meters
Monthly gas surplus production 39000-280 = 38720 cubic meters used to
generate electricity.
The amount of organic liquid produced during the month:
30*650=19500 cubic meter
We need waste tanks with total capacity up to20,000 cubic meters for a month
so we use containers with a capacity over 600 cubic meters (10 * 10 * 6)m for
each one, as a result we need 34 containers.
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Survey The following survey included 288 people from different ages and social
classes, which does not represent the whole community, but gives us a
closer idea to the reality and to people aspirations.
Here are some of the questions:
What are the most commonly transportation way you like to use
it?
If you are used to ride a car or motor bike, why you don’t
like to walk on foots?
Because of the long distance 95 28%
I cannot fide shaded roads 137 41%
I want to save my time 103 31%
Car 113 39%
Bus 83 29%
Metro 18 6%
Motor
bike
1 0%
Bicycle 13 5%
walking 60 21%
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If you don’t like to use bicycles, why that?
Community bad look to people who use bicycles 118 35%
I can’t find a safe place to save my bicycle 58 17%
Because of traffics and accidents 80 24%
I can’t use it in bad weather 84 25%
In which floor do you like to have your apartment?
What kind of apartments do you prefer?
One-floor apartment 103 36%
Duplex apartment 185 64%
Ground floor 31 11%
First 3 floors 128 44% Between 4th to 10th floor 46 16% In high floors 83 29%
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What kind of terraces do you like?
if you are living in the first 3 floors,what kind of vertical
movment methods do you prefer?
What kind of trees do you prefer in your city?
Fruit trees 86 25%
Green trees in all seasons 194 57%
Falling leaves trees in winter 63 18%
Big terrace with gardens 256 89%
Normal terrace without garden 15 5%
I don’t like terraces 3 1%
It doesn’t matter 14 5%
Stairs 89 31%
Elevator 41 14%
Both depends on my temper 130 45%
I don’t live in those floors 28 10%
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Architectural Plans Section
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Scientific References
Wind Atlas in Syria
Nouvert
Environmental Science Book
Research follows the World sustainable business Academy
Office of Energy and Environmental Affairs
Details from wind turbines manufacturers of
Autodesk Sustainability workshop
Archdaily.com
Inhabitance.com
Source green magazine
2012-nacto-urban-street-design-guide Book
Invisible structures book
Soil retention| plantable concrete system
Density Guide Book
Meteo.sm
Meteoblue.com
Wikipedia, the free encyclopedia
World Weather Online
Weather-and-climate.com
SunEarthTools.com
Urban streets design guide Book
Other researches
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