Case 1

PALENC 2010
3rd International Conference
“TERPSITHEA” Sustainable Housing Project
in Porto Rafti, Greece
Leonidas Beis
Architect Engineer N.T.U.A.
MSc in Sustainable Environmental Design
Architectural Association School of Architecture
PALENC 2010
3rd International Conference
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
contents
objective
background/location
overview of TERPSITHEA project
methodology
research and (parametrical studies)
further research
conclusion
discussion
PALENC 2010
3rd International Conference
objective
background/location
TERPSITHEA project
methodology
research
further research
conclusion
discussion
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
objective
objective
background/location
TERPSITHEA project
methodology
research
conclusion
further research
discussion
to explore the abilities of this building type to reduce non-renewable
energy consumption and therefore to obtain an environmental character
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
location
LAT: 37.51°N
LONG: 24.01° E
objective
Athens
El. Venizelos
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
 10 km from the airport (E. Venizelos)
 Population of Porto Rafti is approx. at
10,000 habitants
 Population predicted to rise to 45,000
residents by 2030
Porto Rafti
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
climate
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
Monthly mean temperatures in Porto Rafti, Greece.
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
comfort zone
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
Month
Tmean (Tm)
Tn - 2.5K
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
11.3
9.7
11.4
14.4
19.7
24.4
27.2
26.1
21.9
19
14.9
13.8
18.80
18.31
18.83
19.76
21.41
22.86
23.73
23.39
22.09
21.19
19.92
19.58
Auliciems
Tn=17.8 + 0.31 Tm
21.30
20.81
21.33
22.26
23.91
25.36
26.23
25.89
24.59
23.69
22.42
22.08
Tn + 2.5K
23.80
23.31
23.83
24.76
26.41
27.86
28.73
28.39
27.09
26.19
24.92
24.58
PALENC 2010
3rd International Conference
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
drawings
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
ground floor
total area of each residence 270 m²
first floor
occupied area of each house is 170 m²
PALENC 2010
3rd International Conference
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
process
objective
background
TERPSITHEA project
 The first step of the project was to create the reference building as the
base case and model for the research, which included the
implementation of the Greek regulations for thermal insulation
 The next step was to evaluate the data from each case and compare it
to the base case of the study
methodology
research
further research
conclusion
discussion
 Finally by studying the data collected each case was then compared to
evaluate the variables effect on the building
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
methodology
Dynamic thermal simulation software EDSL TAS (version 9.0.9d)
objective
background
TERPSITHEA project




Base Case Evolution
installation of green roof (Case 1)
addition of nocturnal convective cooling (Case 2)
use of Low E glazing with argon (Case 3)
methodology
Table 2: Building envelope and other variables
research
further research
conclusion
discussion
Building envelope
infiltration
(ach)
ventilation
(ach)
U external walls
(W/m²K)
U roof
(W/m²K)
U glass
(W/m²K)
Base Case (BC)
0.5
0.5
0.5
0.45
2.94
Case 1
BC + green roof
0.5
0.5
0.5
0.34
2.94
Case 2
Case 1+ NCC
0.5
5
0.5
0.34
2.94
Case 3
Case 2 + Low E glazing
0.5
5
0.5
0.34
2.12
PALENC 2010
3rd International Conference
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
Base case evolution
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
3D model in Tas
PALENC 2010
3rd International Conference
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
Base case evolution
 The overall ventilation rate (both infiltration and ventilation) for the building
for the whole year is set 1 ach
objective
background
TERPSITHEA project
 Infiltration rate: 0.5 ach steady all day
 Ventilation rate 0.5 follows building’s schedule
methodology
research
further research
conclusion
discussion
 Thermostat’s setpoints were calibrated according to the new comfort zone;
18°C for heating and 28°C for cooling
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
Base case evolution
25000,00
19981,27
20000,00
objective
background
TERPSITHEA project
15000,00
BC
10000,00
methodology
research
further research
conclusion
discussion
5000,00
1345,55
0,00
Heating
Cooling
Annual heating and cooling loads for Base Case in kWh.
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
Case 1: Green roof
25000,00
+2.5%
20000,00
objective
background
TERPSITHEA project
methodology
15000,00
Base Case
Case 1
10000,00
research
further research
conclusion
discussion
5000,00
-13.33%
0,00
Heating
Cooling
Annual heating and cooling loads for Base Case and Case 1 in kWh
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
Case 2: Ventilation
25000,00
20000,00
objective
background
TERPSITHEA project
methodology
-27.81%
15000,00
Base Case
Case 2
10000,00
research
further research
conclusion
discussion
5000,00
-13.33%
0,00
Heating
Cooling
Annual heating and cooling loads for Base Case and Case 2 in kWh
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
Case 3: Low E glazing
25000,00
20000,00
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
15000,00
Base Case
Case 3
10000,00
- 65%
5000,00
+72 %
0,00
Heating
Cooling
Annual heating and cooling loads for Base Case and Case 3 in kWh
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
Comparisons
25000,00
20000,00
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
15000,00
Heating
Cooling
10000,00
5000,00
0,00
Base Case
Case 1
Case 2
Case 3
Annual heating and cooling loads for Terpsithea sustainable housing project in kWh
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
Roof Ponds
Potential to reduce cooling loads by 41.6%, when the building
utilizes a roof pond with depth 0.3 m. (Yannas et al. 2006)
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
By installing roof pond instead of green roof Terpsitea’s cooling
loads will be reduced 1.5 times more than the Case 2.
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
Roof Ponds
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
PALENC 2010
3rd International Conference
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
conclusions
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
PALENC 2010
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
3rd International Conference
References
Givoni, B. (1994). Passive and Low Energy Cooling of Buildings. Van Nostrand Reinhold,
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
Niachou, A, Papakonstantinou, K, Santamouris, M, Tsangrasoulis, A, Michalakakou, G
(2001). Analysis of the green roof thermal properties and investigation of its energy
performance. Energy and Buildings
Spala, A, Bagiorgas, H.S, Asimakopoulos, M.N, Kalavrouziotis J, Matthopoulos D,
Michalakakou G. (2007). On the green roof system. Selection, state of the art and
energy potential investigation of a system installed in an office building in Athens,
Greece. Renewable Energy 33 (2008)
Szokolay, S. (2008). Introduction to Architectural Science. The basis of Sustainable
design.Architectural Press.
Yannas, S., E. Erell and J. L. Molina. (2006). Roof Cooling Techniques: A Design
Handbook. Earthscan. James and James. Publishing. London.
PALENC 2010
3rd International Conference
objective
background
TERPSITHEA project
methodology
research
further research
conclusion
discussion
“TERPSITHEA” Sustainable Housing Project in Porto Rafti, Greece
Thank you!
Leonidas Beis
[email protected]
[email protected]