energy efficiency report on family house …ref: 2010/4e prof. dr dubravka mijuca _____ integral...

INTEGRAL ENERGY EFFICIENCY REPORT ON FAMILY HOUSE IN LJUBE JOVANOVIĆA 7 ST.

SENJAK, BELGRADE Report generated by DesignBuilder on 11/14/2010

Site LJUBE JOVANOVIĆA 7 ST. SENJAK, BEOGRAD Assessor: Prof. dr Dubravka Mijuca

Company: Faculty of Civil Construction Management, and Company VND

14/11/2010

Ref: 2010/4E

Prof. dr Dubravka Mijuca

____________________

INTEGRAL ENERGY EFFICIENCY REPORT ON FAMILY HOUSE IN LJUBE JOVANOVIĆA 7 ST. SENJAK, BELGRADE

Prof. dr Dubravka Mijuca, +381 11 64 15 12 780, [email protected], www.dmijuca.in.rs

TABLE OF CONTENTS

Job description ........................................................................................................................................ 4

Analysis of the initial design of the building ........................................................................................... 5

Blockes and zones ............................................................................................................................... 5

Building data ....................................................................................................................................... 8

Definition of the Outer wall SZ1 ........................................................................................................ 12

Building Hierarchy, blocks and zones ................................................................................................ 13

All results for building ....................................................................................................................... 14

Total Fules ......................................................................................................................................... 15

Fuel breakdown ................................................................................................................................. 16

CO2 production ................................................................................................................................. 17

Heat design for one winter day, traditional approach ...................................................................... 18

Cooling design for one extreme summer day, traditional approach ................................................ 20

Conclusion on first design ................................................................................................................. 22

Optimization .......................................................................................................................................... 23

Building SZ1 wall calculations ........................................................................................................... 23

Different solutions od glazings, SZ1 configurations and air infiltrations .......................................... 24

Conclusion after optimisation ........................................................................................................... 25

Results of the optimal solution ............................................................................................................. 26

Building data ..................................................................................................................................... 26

Description and fuel consumption .................................................................................................... 26

Building Hierarchy, blocks and zones ................................................................................................ 27

Building blockes and zones ............................................................................................................... 28

Level 0 ........................................................................................................................................... 28

Level 1.1 ........................................................................................................................................ 28

Level 1 ........................................................................................................................................... 29

Level 3 ........................................................................................................................................... 30

Level 4 ........................................................................................................................................... 30

mailto:[email protected]

http://www.dmijuca.in.rs/



U values of the construction elements ............................................................................................. 31

Embodied CO2 data .......................................................................................................................... 32

System loads...................................................................................................................................... 34

Fuel breakdown ................................................................................................................................. 35

Fuel totals .......................................................................................................................................... 36

Internal gains ..................................................................................................................................... 37

CO2 production ................................................................................................................................. 38

Fabric and Ventilations ...................................................................................................................... 39

Neuralgic zones ................................................................................................................................. 40

L2. prizemlje: stepenisni hol .......................................................................................................... 40

L3. sprat: stepenisni hol ................................................................................................................ 40

L4. potkrovlje stepenisni hol: ........................................................................................................ 40

L1. suteren: hodnik do sporednih stepenica ................................................................................. 41

L2. prizemlje: sporedno stepeniste ............................................................................................... 41

L3. sprat: sporedno stepeniste ...................................................................................................... 41

L1. suteren: kupatilo wc dodatno ................................................................................................. 42

L1. suteren: ulaz iz garaze ............................................................................................................. 42

Optimal zones with minimum fuel consumption .............................................................................. 43

L1. suteren: kuhinja ....................................................................................................................... 43

L2. prizemlje: boravak ................................................................................................................... 43

Heated zones temperature and heat gains per year ........................................................................ 44

Temperature and heat gains per month ........................................................................................... 50

Hourly data per “bedroom 2” for thecharacteristics days ................................................................ 60





JOB DESCRIPTION

The present report provides a range of environmental performance, data such as: energy consumption, heat gains, carbon emissions, comfort conditions, maximum summertime temperatures and HVAC component sizes, on early design of the family house in Ljube Jovanovica street, number 7, Senjak, Belgrade.





ANALYSIS OF THE INITIAL DESIGN OF THE BUILDING

Blockes and zones





Building data

Building Data

Building number of zones: 42

Building heated/cooled floor area (m2) 529.73

Building volume (m3) 1718.65

Building external area (m2) 744.03

Building external surface area/Volume (m-1)

0.433





Construction element U-Value (incl bridging)

(W/m2K)

Lazarevici Plafon od spoljasnje ostave= Pod od ulaznog trema Lazarevici MK1 - Medjukonstrukcija 1

0.404

19mm wooden floor 2.465

Project ground floor 0.246

Lazarevici T - tavanica 0.226

Lazarevic SZ2 Wall 0.295

Solid hardwood door (normally hung) 2.079

Lazarevici PZ3 - pregradni zid 3 kupatilske plocice 2.06

Lazarevici PZ4 - pregradni zid 4 kupatilske plocice 1.004

Lazarevici MK2 - Medjukonstrukcija 2 0.387

Project flat roof 0.25

Lazarevici PZ2 - pregradni zid 2 1.029

Project internal mass 3.017

Wooden flush panel hollow core door (normally hung) 2.041

Lazarevic SZ2 Wall (kamene ploce) 0.295

Lazarevic SZ1 Wall 0.28

Lazarevici MK1 - Medjukonstrukcija 1 0.369

Link body 0.001

Lazarevici K1 - Krov 1 0.161

Lazarevici PZ1 - pregradni zid 1 2.168

Lazarevici K2 - krov 2 0.161

Project external floor 0.246

Project internal floor 2.929

Glazings Laye-rs

UValue (W/m2K)

Trans Light (VT)

Trans Total (SHGC)

Trans Direct Solar

Frame Mult

Dbl Clr 6mm/13mm Air

2 2.708 0.781 0.697 0.604 0.1

Dbl Clr 3mm/13mm Arg

2 2.596 0.812 0.761 0.705 0.1

Sgl Clr 3mm 1 6.257 0.898 0.858 0.837 0.1





Definition of the Outer wall SZ1





Building Hierarchy, blocks and zones





All results for building

0

20

40

60

80

100

0

5

10

15

20

-50

0

50

0

10

20

30

40

50

60

70

0.95

1.00

1.05

1.10

1.15

Temperatures, Heat Gains and Energy Consumption - Kuca Jelene Lazarevic, Ljube Jovanovica 7, BeogradEnergyPlus Output 1 Jan - 31 Dec, Annual Licensed

Fu

el (

kWh

/m2

)T

em

pe

ratu

re (

°C)

He

at B

ala

nce

(kW

h/m

2)

Sys

tem

En

erg

y (k

Wh

/m2

)T

ota

l fre

sh a

ir (

ac/

h)

Year

Room Electricity Lighting System Misc Heat Generation (Gas) Chiller (Electricity)DHW (Electricity) DHW (Gas)

Air Temperature Radiant Temperature Operative Temperature Outside Dry-Bulb Temperature

External Infiltration External Vent. General Lighting Catering Gains Computer + EquipOccupancy Solar Gains Interior Windows Solar Gains Exterior Windows Zone Sensible HeatingZone Sensible Cooling

Sensible Cooling Total Cooling Zone Heating

Mech Vent + Nat Vent + Infiltration





Total Fules

30

40

50

60

70

80

90

100

Fuel Totals - Kuca Jelene Lazarevic, Ljube Jovanovica 7, BeogradEnergyPlus Output 1 Jan - 31 Dec, Annual Licensed

Fue

l (kW

h/m

2)

Year

Electricity (kWh/m2) Gas (kWh/m2)

Electricity (kWh/m2) 29.74Gas (kWh/m2) 97.47





Fuel breakdown

0

10

20

30

40

50

60

70

80

90

100

Fuel Breakdown - Kuca Jelene Lazarevic, Ljube Jovanovica 7, BeogradEnergyPlus Output 1 Jan - 31 Dec, Annual Licensed

Fue

l (kW

h/m

2)

Year

Room Electricity (kWh/m2) Lighting (kWh/m2) System Misc (kWh/m2)Heat Generation (Gas) (kWh/m2) Chiller (Electricity) (kWh/m2)DHW (Electricity) (kWh/m2) DHW (Gas) (kWh/m2)

Room Electricity (kWh/m2) 8.67Lighting (kWh/m2) 17.38

System Misc (kWh/m2) 2.20Heat Generation (Gas) (kWh/m2) 96.50

Chiller (Electricity) (kWh/m2) 1.44DHW (Electricity) (kWh/m2) 0.05

DHW (Gas) (kWh/m2) 0.97





CO2 production

36

37

38

39

40

41

42

43

CO2 Production - Kuca Jelene Lazarevic, Ljube Jovanovica 7, BeogradEnergyPlus Output 1 Jan - 31 Dec, Annual Licensed

CO

2 (k

g/m

2)

Year





Heat design for one winter day, traditional approach

-8

-6

-4

-2

0

2

4

6

8

10

12

14

-20

-15

-10

-5

0

5

10

15

20

25

30

35

Temperature and Heat LossEnergyPlus Output Licensed

Tem

pera

ture

(°C

)H

eat B

alan

ce (

kW)

Air Temperature (°C) Radiant Temperature (°C)Operative Temperature (°C) Outside Dry-Bulb Temperature (°C)

Glazing (kW) Walls (kW) Ceilings (int) (kW) Floors (int) (kW)Ground Floors (kW) Partitions (int) (kW) Roofs (kW)Doors and vents (kW) Floors (ext) (kW) External Infiltration (kW)External Vent. (kW) Zone Sensible Heating (kW)

Air Temperature (°C) 13.89Radiant Temperature (°C) 12.59

Operative Temperature (°C) 13.24Outside Dry-Bulb Temperature (°C) -8.70

Glazing (kW) -5.11Walls (kW) -3.77

Ceilings (int) (kW) 0.83Floors (int) (kW) -0.84

Ground Floors (kW) 0.20Partitions (int) (kW) 0.00

Roofs (kW) -0.98Doors and vents (kW) -1.30

Floors (ext) (kW) -0.87External Infiltration (kW) -20.52

External Vent. (kW) -3.51Zone Sensible Heating (kW) 35.68





Cooling design for one extreme summer day, traditional approach

Not all the zones are includes in cooling design.

24

26

28

30

32

34

-15

-10

-5

0

5

-20

-15

-10

-5

0

35

36

37

38

39

40

41

42

1.01

1.02

1.03

1.04

1.05

1.06

Temperature and Heat Gains - Kuca Jelene Lazarevic, Ljube Jovanovica 7, BeogradEnergyPlus Output 15 Jul, Sub-hourly Licensed

Tem

pera

ture

(°C

)H

eat B

alan

ce (

kW)

Sys

tem

Ene

rgy

(kW

)P

erce

nt (

%)

Tot

al fr

esh

air

(ac

/h)

Time

1:002:00

3:004:00

5:006:00

7:008:00

9:0010:00

11:0012:00

13:0014:00

15:0016:00

17:0018:00

19:0020:00

21:0022:00

23:00

Air Temperature Radiant Temperature Operative TemperatureOutside Dry-Bulb Temperature

Glazing Walls Ceilings (int) Floors (int) Ground Floors Partitions (int)Roofs Doors and vents Floors (ext) External Infiltration External Vent.General Lighting Catering Gains Computer + Equip OccupancySolar Gains Interior Windows Solar Gains Exterior Windows Zone Sensible Cooling

Sensible Cooling Total Cooling

Relative Humidity

Mech Vent + Nat Vent + Infiltration





Conclusion on first design

It is assumed that zones as garage and pantries (ostave) are not heated. but have only natural ventilation. The same zones with no windows are mechanically ventilated.

Hot water radiator heating, natural ventilation is adopted for heating and cooling. Only several zones in the hause will have split cooling systems powerd by electricity from the grid.

Double and single glazing, reflective, clear, internal blinds, wher double are filled with argon are used for windows which frames are made from aluminium with thermal breaks.

The ascendant lighting bulbs are used for lihting.

The analysed early design of the building in Ljube Jovanovica street No.7 has next fuel breakdown:

In sum, total fuel needs for the house are:

Therefore, the house needs 127.21 kWh/m2 for the heating and cooling of the occupied spaces. It is assumed that zones as garage and pantries (ostave) are not heated. but have only natural ventilation. The same zones with no windows are mechanically ventilated.

It is noticed that boiler room (kotlarnica) which will have gass installation is in the center of the basement withno window. It is highly for recommended that this installation is moved in another part of the basement, for example in the big pantry room which is under the main porch of the building, where natural ventilation can be easily assumed. Namely, standard reauire that no mechanical ventilation is present in the gas boiler room.





OPTIMIZATION

We will start with examining the different configurations of the building externall wall SZ1.

Building SZ1 wall calculations

The number of different solutions on building envelope materials and thicknes [m] based on the poroposed solusion of the outer wall SZ1, with aither GITTER or KLIMA BLOCKS, are examined. The objective function is to lower as much as possible the heat transfer thermal transmittance coefficient U [W/(m2K)]. Examined combinbations are given in Tables 1 and 2.

Table 1.

1 2 3 4 5 6 7 8

OUTER BRICK

0.12 0.12 0.12 0.12 0.12 0.24 0.24 0.24

AIR 0.03 0.05 0.03 0.05 0.05 0.03 0.05 0.05

KINGSPAN 0.05 0.05 0.1 0.1 0.1 0.05 0.05 0.1

GITTER BLOCK

0.2 0.2 0.2 0.2 0.25 0.2 0.2 0.2

MORTAR 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02

U [W/(m2k)] 0.230 0.195 0.153 0.137 0.134 0.222 0.189 0.134

Table 2.

1 2 3 4

OUTER BRICK 0.12 0.12 0.12 0.12

AIR 0.03 0.03 0.05 0.05

KINGSPAN 0.05 0.1 0.05 0.1

KLIMABLOC „ZORKA“ 38 k=0.139W/(mK)

0.38 0.38 0.38 0.38

MORTAR 0.02 0.02 0.02 0.02

U [W/(m2k)] 0.156 0.116 0.139 0.107





Different solutions od glazings, SZ1 configurations and air infiltrations

After the initial calculations on which gave us the fuell total consumption of 127.21 kWh/m2 per year, optimisation concerning building envelope and windows, as well infiltration of air in building is examined. The fuel consumption per electricity and gas are for some of the various modifications exmined, are given in Table 1.

Table 1.

RESENJE OPIS RESENJA FUEL TOTAL

ELEC. FUEL TOTAL

GAS FUEL

TOTAL

0 RAZNI FINANSIJSKI EKONOMICNI PROZORI + CIGLA 12 +KINGSPAN 5 +GITTER BLOCK 20 +VAZDUH 2

29.74 97.47 127.21

1 DOUBLE GLAZING U=1.337, OUTER BRICK 12

+KINGSPAN 5 +GITTER BLOCK 20 +AIR 2 30.16 90.07 120.23

2 DOUBLE GLAZING U=1.337, OUTER BRICK 12

+KINGSPAN 5 +GITTER BLOCK 20 +AIR 3 30.16 88.78 118.94

10 TRIPLE GLAZING U=0.786 , OUTER BRICK 12

+KINGSPAN 5 + KLIMABLOCK „ZORKA“ 38 +AIR 3 + AIR INFILTRATION 1

30.07 79.45 109.52


+KINGSPAN 5 +GITTER BLOCK 20 +AIR 3+ AIR INFILTRATION 1

30.07 82.79 112.86


+KINGSPAN 5 +GITTER BLOCK 20 +AIR 5+ AIR INFILTRATION 1

30.07 81.46 111.53

9.3

TRIPLE GLAZING U=0.786 , OUTER BRICK 12 +KINGSPAN 5 +GITTER BLOCK 20 +AIR 5+NO

LOUVRES THERMAL MORTAR in horizontal lining of the outer brick,+ AIR INFILTRATION 1

30.57 78.25 108.82

9.4


LOUVRES + THERMAL MORTAR in horizontal lining of the outer brick, SILICON PAINT OVER SZ1+ AIR

INFILTRATION 0.7

31.01 57.05 88.06


+KINGSPAN 10 +GITTER BLOCK 20 +AIR 5 + AIR INFILTRATION 1

30.07 79.25 109.32


+KINGSPAN 5 +GITTER BLOCK 20 +AIR 3 + AIR INFILTRATION 1

30.06 82.33 112.39

10 TRIPLE GLAZING U=0.786 + BEST PRACTICE+ AIR

INFILTRATION 1 29.96 93.32 123.38





Air infiltration stands for the number of total changes of air in the zone per hour. It is only dependent on the quality of finishing works on the building, esspecialy how the openings, that is windows and doors are thight to the external wall. It is extrimelly important that no any whole is present in the region of opening and wall.

Louvres stands for externall sghadings on windows.

Air stands for gap (void) in the sandwich panel in the externall wall.

Best practice stands for externall and internall walls, foors, cielings and roofs which has minimal price for standard energy efficiency, for example class B in energy label.

Conclusion after optimisation

According to the optimisation where two objective functions were total fule consumption and price of the building envelope, the solution 9.4 which gave us the total fule consumption of 88.06 kWh/m2 per year, for minimal extra investment, is chosen as the optimal one.





RESULTS OF THE OPTIMAL SOLUTION

Building data

Building Data

Building number of zones: 41

Building heated/cooled floor area (m2) 529.73

Building volume (m3) 1718.65

Building external area (m2) 744.02

Building external surface area/Volume (m-1) 0.433

Description and fuel consumption

9.4


LOUVRES + THERMAL MORTAR in horizontal lining of the outer brick, SILICON PAINT OVER SZ1+ AIR

INFILTRATION 0.7

31.01 57.05 88.06





Building Hierarchy, blocks and zones





Building blockes and zones

Level 0

Level 1.1





Level 1

Level 2





Level 3

Level 4





U values of the construction elements

DB Version 2.2.5.004

Report 11/25/2010 14:53

Keyword Key U-Value (W/m2K)

CM (KJ/K)

CONSTRUCTION Lazarevici Plafon od spoljasnje ostave= Pod od ulaznog trema Lazarevici MK1 - Medjukonstrukcija 1

0.404 32.2

CONSTRUCTION 19mm wooden floor 2.465 7.41

CONSTRUCTION Project ground floor 0.246 93.96

CONSTRUCTION Lazarevici T - tavanica 0.226 12.332

CONSTRUCTION Lazarevic SZ2 Wall (kamene ploce) 0.287 130.176

CONSTRUCTION Lazarevici PZ3 - pregradni zid 3 kupatilske plocice 2.06 194.264

CONSTRUCTION Lazarevici PZ4 - pregradni zid 4 kupatilske plocice 1.004 145.264

CONSTRUCTION Lazarevici MK2 - Medjukonstrukcija 2 0.387 12.09

CONSTRUCTION Project flat roof 0.25 32.614

CONSTRUCTION Lazarevici PZ2 - pregradni zid 2 1.029 130.176

CONSTRUCTION Project internal mass 3.017 88.2

CONSTRUCTION Wooden flush panel hollow core door (normally hung) 2.041 5.964

CONSTRUCTION Lazarevic SZ1 Wall: kingspan 5cm vazduh 5cm 0.195 130.176

CONSTRUCTION Lazarevic SZ2 Wall (kamene ploce) kingspan 5 vazduh 5 0.194 130.176

CONSTRUCTION Lazarevic SZ1 Wall: 0.297 130.176







CONSTRUCTION Link body 0.001 0

CONSTRUCTION Lazarevici K1 - Krov 1 0.161 25.446

CONSTRUCTION Lazarevici PZ1 - pregradni zid 1 2.168 186.176

CONSTRUCTION Lazarevici K2 - krov 2 0.161 12.09

CONSTRUCTION Project external floor 0.246 6.294

CONSTRUCTION Project internal floor 2.929 88.2

Keyword Name Layers

UValue (W/m2K)

Trans Light (VT)

Trans Total (SHGC)

Trans Direct Solar

Frame Mult

GLAZING Trp LoE (e2=e5=.1) Clr 3mm/13mm Arg

3 0.786 0.661 0.47 0.358 0.1

GLAZING Dbl LoE Spec Sel Tint 6mm/13mm Arg

2 1.337 0.408 0.274 0.208 0.1

Keyword Name Layers UValue (W/m2K)

Window frames Painted wooden frame thikness 0.02m 1 3.633

Keyword Name Layers UValue (W/m2K)

External Doors

Solid hardwood door (normally hung) thikness 0.042m 1 2.079

Internal Doors Wooden flush panel hollow core door (normally hung) 3 2.041

Embodied CO2 data

CONSTRUCTIONS EMBODIED CO2

Description Area (m2) Embodied CO2 (kgCO2)

Equivalent CO2 (kgCO2)

Lazarevici Plafon od spoljasnje ostave= Pod od ulaznog trema Lazarevici MK1 - Medjukonstrukcija 1

33.205 2848.964 2999.714

19mm wooden floor 5.277 29.978 30.629

Project ground floor 55.332 2256 2277.069

Project internal floor_Reversed 0.238 3.998 3.998

Lazarevici T - tavanica 115.652 4305.965 4394.44

Lazarevic SZ1 Wall 15.999 3186.321 3277.194

Lazarevic SZ2 Wall (kamene ploce) 21.585 2348.074 2470.677

Lazarevici PZ3 - pregradni zid 3 kupatilske plocice 147.975 11228.94 11585.85

Lazarevici PZ4 - pregradni zid 4 kupatilske plocice 13.068 405.167 410.028

Lazarevici MK2 - Medjukonstrukcija 2_Reversed 21.154 2361.548 2437.162

Lazarevici MK1 - Medjukonstrukcija 1_Reversed 0.22 15.581 16.204

Lazarevici MK2 - Medjukonstrukcija 2 291.441 32535.1 33576.85

Project flat roof 96.255 1687.84 1782.95

Lazarevici PZ2 - pregradni zid 2 475.109 10110.31 10110.31

Project internal mass 121.896 2047.859 2047.859

Wooden flush panel hollow core door (normally hung) 122.475 833.32 864.184





Lazarevic SZ1 Wall: kingspan 5cm vazduh 5cm 374.132 38685.28 40810.36

Lazarevic SZ2 Wall (kamene ploce) kingspan 5 vazduh 5 241.749 26298.22 27671.35

Lazarevic SZ1 Wall: 11.439 1182.824 1247.799

Lazarevici T - tavanica_Reversed 15.321 570.417 582.137

Lazarevici MK1 - Medjukonstrukcija 1 70.027 4952.881 5150.633

Link body 24.629 0 0

Lazarevici K1 - Krov 1 111.866 4069.14 4204.834

Lazarevici PZ1 - pregradni zid 1 792.556 52435.53 54052.34

Lazarevici K2 - krov 2 65.191 1884.884 2022.391

Project external floor 193.015 1816.912 1883.255

Project internal floor 53.8 903.833 903.833

Sub Total 3490.607 209004.88 216814.049

Glazing Embodied CO2

Description Area (m2) Embodied CO2 (kgCO2)

Equivalent CO2 (kgCO2)

Trp LoE (e2=e5=.1) Clr 3mm/13mm Arg 82.206 1572.197 1664.68

Dbl LoE Spec Sel Tint 6mm/13mm Arg 1.302 33.191 35.143

Dbl LoE Spec Sel Clr 3mm/13mm/6mm Arg 1.291 24.683 26.135

Sub Total 84.799 1630.071 1725.958

Building Total 3575.406 210634.951 218540.007





System loads





Fuel breakdown





Fuel totals





Internal gains





CO2 production





Fabric and Ventilations





Neuralgic zones

L2. prizemlje: stepenisni hol

L3. sprat: stepenisni hol

L4. potkrovlje stepenisni hol:





L1. suteren: hodnik do sporednih stepenica

L2. prizemlje: sporedno stepeniste

L3. sprat: sporedno stepeniste





L1. suteren: kupatilo wc dodatno

L1. suteren: ulaz iz garaze





Optimal zones with minimum fuel consumption

L1. suteren: kuhinja

L2. prizemlje: boravak





Heated zones temperature and heat gains per year





Temperature and heat gains per month





Hourly data per “bedroom 2” for thecharacteristics days

The air temperature in the room depends on weathe data, such as: ween speed and direction, outside humidity and temperature.



energy efficiency report on family house …ref: 2010/4e prof. dr dubravka mijuca _____ integral...

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