environmental portfolio

8/16/2019 Environmental Portfolio

1/10

Environmental Architecture by Stefanos Papathanasopoulos

MY WORK


2/10

This project is focused on the design of a passive house, aiminphysics. There is zero reliance on mechanical cooling and heatina rural area, in Washington DC, US A. Modelling and assessment

PASSIVE S


3/10

Winter

Summer

Greenhouse

Trombe Wall

Chimneys

Green Roof

Summer cooling strategy

FORM FOLLOWS ENERGYThe main strategy is to optimise the building design towards maxi-mum winter solar gains. In order to achieve that, the south facadewas titled by 30o, facing the low winter sun. The control of solar gainswas achieved by installing a second skin of louvers. Additional heatingwas facilitated by trombe walls and a greenhouse, which heated upthe air and distributed it to the bedrooms and living room. Coolingwas based on cross ventilation and stack ventilation through solarchimneys. The control of openings was based on a set of tempera-ture-related formulas, in order to secure optimum indoor conditions.

Summer solstice 74o Winter solstice 27o

74o

30o

54o

Winter Heang (Chimney-Trombe vents)

Summer Cooling (Vents + Glazing cross venlaon)

Midseason (Vents + Glazing cross venlaon)

Air quality (trickle vents)

Solar control (electrochromic lm, internal blinds)

open if; ttrombe

> troom

& troom

< 23 oC

open if; troom

> 23 oC & tout

< troom

open if; tout

< troom

& troom

> 23

oC

open if; CO2 > 1200 ppm

FILM, shade if; troom

> 22 oC

BLINDS, close if; radiaon = 0

Bedroom

Winter Heang (Trombe vents + greenhouse)

Midseason (Cross vents)

Air quality (trickle vents)

Solar control (electrochromic lm, internal blinds)

open if; ttrombe

> troom

& troom

< 23 oC

open gradually if; tout

< troom

& troom

> 21 oC

open if; CO2 > 1200 ppm

FILM, shade if; troom

> 22 oC

BLINDS, fully closed during night

Summer Cooling (Cross vents + Chimney outlet)

CROSS VENTS DAY, open if; troom

> 22 oC & tout

< troom

CROSS VENTS NIGHT, open if; tout

< troom

& tout

> 7 oC

CHIMNEY OUTLET, open only during night venlaon

Living Room

Formulas

External Shading

PlansTechnologies

Ventilation Grills


4/10

NATURALLY VENTILATED THEATREThisisaproposalthatwasmadeforacompetition,thatposedthequestion ofdesigningnewandalternativespacesforwork.Theideabehindthedesign,istomanufacturesmallprefabricatedmodularboxes,thatcanbeshippedinsmallpackagesandassembledwherever around the globe. These boxes can be joined together and form bigger modules, and be disassembled again and shipped to another location.

This project revolves around the design of a naturally ventilated and passively cooled/heated building. Being more specic, it contains a small theatre (7Victoria Embankment Gardens. During the whole design process, what was kept in mind was that the building had to rely only on natural ventilation withwere kept at acceptable levels by implementing a plenum and a s olar chimney which helped cool/heat the intake air.

naturally ventilate


5/10

The main environmental concept behind the design, is that the building is submerged under-ground, utilising the stable temperature of the ground, while being as less disrupting as possi-ble to the surrounding landscape. The building intakes fresh air from outside, forcing it to passthrough an underoor plenum, which according to the season, cools down or heats up theair. It is then distributed in the space via displacement ventilation and successively exhaustedby chimney stacks, positioned on top of the auditorium and the cafe. All of the energy relatedresults were calculated through simulations that were facilitated in IES-VE.

SUBMERGING

Strategy and IES model Section and CFD analysis


6/10

This project revolves around the generation of an urban bus station, which will beof evaluations and reviews of the design based on results from computer-based environmental analysis for the surrounding site and the bus station, while climatwill be appropriate for its surrounding area.

SUSTAINABLE


7/10

DESIGN CONCEPTThe bus station designed, incorporates 5 features which contribute to an overall comfort for the user. Metal-lic tubes are installed on the station’s roof which are exposed to the winter sun. This heats up the air insidethem, which is then distributed under the seats. A dierent intake, forces the air to travel in tubes buriedunderground, cooling it during summer or heating it during winter, thanks to the ground’s annual stabletemperature. The positioning of the louvers, permit sun rays during winter but block them during summer.Translucent panels are being placed in front of the station, in order to protect the users from northern win-ter winds. Finally, solar panels are being placed on top, which provide electricity for the station’s demands.

wind turbine

air intake

insulation 2cmsolar panels

wooden panels 2 cm

metal tubes 5x10 cm

tube with diameter 20 cm

ROOF SECTION A-A’

ROOF SECTION B-B’

heating from the sun

distribution through grills

cooling/heatingthrough ground travel

Summ

Winter

Roof section Strategy


8/10

facade oThis proposal was done for an academic building belongtimised towards securing low annual system loads and min Rhinoceros, parameterised in Grasshopper, DIVA was tmulti-objective optimisation.


9/10

Opaque

Glazing

Side Shading / West protection

Overhang / South protection

MODULAR FACADEThe idea was to design a module that would be parameterised according to values related with the sun’s position, since this would secure optimum results.The nal shape of the module was dened by the width of the facade, the angle from the south sun and the height of each oor. These values generatedthe glazing and opaque area of the module and the shading’s overhang depth. A set of dimensions were assigned as a pool of data, so that the softwarecould run iterative runs and determine which are the optimum solutions for the designer, considering annual system loads and daylight factor.

81 200

Solar Irradiation [kWh/m2]

Daylight autonomy for 20,40,60 and 80% glazing r atio

Daylight factor for 20,40,60 and 80% glazing ratio

20%

20%

40%

40%

Loads+Daylight solution

Loads solution

Daylight solution

Initial strategy and analysis


10/10

thank you

environmental portfolio

Documents