Κατασκευή ισόγειας κατοικίας με χρήση φυσικών υλικών δόμησης

Σύντομη περιγραφή των σταδίων κατασκευήςa dwelling made by natural buildingmaterials

place: skourta, greeceowner: orestis daviasnumber of building permition: 69/2012time of construction: summer 2012

architectural design: dimitris makristhermal simulation: dimitris makrisstructural design: vasilis alifragkis, dimitris makrisHVAC design: energy projectconstruction supervisor: dimitris makris

design

plan layout

section

framework

stone and reinforced concrete foundations

solid timber framework

stonestone--brick base wall and ceramic roof tilesbrick base wall and ceramic roof tiles

roof and floor

clay and perlite mortar for floor insulationclay and perlite mortar for floor insulation

earth floorearth floor

timber/cane frame with cob partition walls

walls

temperature and relative humidity monitoring

straw bale external walls

indoors: NHL base coat and clay plaster top coat (indoors: NHL base coat and clay plaster top coat (““ClayworksClayworks””))

finishes

after renderingafter rendering

outdoors: NHL base coat and traditionaloutdoors: NHL base coat and traditionallime top coat (kurasani)lime top coat (kurasani) ““ProlatProlat””

monitoring results

the internal temperature remains almost stable during each day despite the significant correspondingfluctuations of ambient temperature, indicating the remarkable thermal inertia of the building whichhelps to overcome periods of extreme temperatures

monitoring results for ambient and internal air temperature during 10 days period

9

11

13

15

17

19

21

23

25

27

29

31

33

35

37

15th

May

16th

May

17th

May

18th

May

19th

May

20th

May

21st

May

22nd

May

23rd

May

24th

May

tem

pera

ture

[C]

internal temprature ambient temperature

thermal simulation

predicted percentage of indoor temperature as a free running building (with no mechanical assistance)

percentage of indoor temperature values within the comfort range through the year (present climate)

6.51.9

14.2

74.2

3.10.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

[%]

temp<18 C slight ly cooler (18-20 C) comfort range slight ly hotter (29-31) temp>31 C

thermal simulation

predicted monthly energy loads for maintaining comfortconditions concerning temperature TOTAL cooling and heating annual loads

345.3

212.7

0.0

100.0

200.0

300.0

400.0

500.0

Loa

ds

[kW

h] total heating loads

total cooling loads

Monthly heating-cooling Loads of the building to maintain comfort conditions

0

10

20

30

40

50

60

70

80

90

100

110

120

January March May July September November

Time [months]

Loa

ds

[kW

h]

heating load cooling load

predicted annual energy loads for maintaining comfortconditions concerning temperature

Space heating demand=9.8 kWh/ ( m2 a) <15 kWh/( m2 a)

Cooling demand=6.2 kWh/( m2 a) <15 kWh/( m2 a)

the building is classified as a passive house (Passive

House Institute ,2012) and as an A1 class residentialbuilding (<10 kWh/( m2 a)) (building Energy PerformanceCertificate Regulations of Greece)

kitchenkitchen

one year after

bathroombathroom

bedroombedroom

living room

one year after

epilogue

technical information•building footprint: 49.00m2 (net floor area 36.00m2)•Spaces: one bedroom, bathroom, living room, kitchen with dinner•Main construction materials: straw bales, solid timber, sheep wool insulation, natural finishes, stone,natural hydraulic lime, clay and aggregates

specifications•low construction and operational cost•high standards of Internal Environmental Quality•minimum ecological footprint