View from the outside
© HPHI
© HPHI
A 1980s multifamily house with a treated floor area of 1500m2, a lightly insulated brick façade, 150m of balconies, a flat, uninsulated roof and a floor slab that is 2.4m above ground. The windows are double-glazed with aluminium frames that are not thermally broken. The building is quite leaky with an airtightness level of n50 = 8 ACH (as compared to 0.6 ACH for the Passive House Standard).
Under construction:
At the moment, the external insulation needs and the roller blinds need to be installed. The last one out of the 3 ventilation system needs to be installed. A blowerdoor airtightness test and ventilation protocol are also in the works. The postmonitoring is being set up at the moment as well.
EnerPHit Energy Demand Method. This means that we will achieve EnerPHit level energy demand (25 kWh/m2a) certification by insulating the entire envelope, minimsing existing themal bridges, replacing windows, improving airtightness and installing mechanical ventilation with heat recovery.
This project will be carried out as a step by step renovation.
Renovation will reduce the heating demand by factor of 17.5 and the cooling demand by a factor 3.5.
TFA | existing treated floor area (usable floor space) |
140.0 m2 |
---|---|---|
Space heating | Heating demand |
210.0 kWh/(m2a) |
Heating load |
93.0 W/m2 |
|
Space cooling | Cooling & dehum. demand |
41.0 kWh/(m2a) |
Cooling load |
41.0 W/m2 |
|
Frequency of overheating (> 25 °C) |
– % |
|
Frequency of excessively high humidity (> 12 g/kg) |
91.0 % |
|
Airtightness | Pressurization test result n50 |
1.0 /h |
Non-renewable Primary Energy (PE) | PE demand |
591.0 kWh/(m2a) |
Generation of renewable energy (in relation to projected building footprint area) |
352.0 kWh/(m2a) |
TFA | existing treated floor area (usable floor space) |
140.0 m2 |
---|---|---|
Space heating | Heating demand |
12.0 kWh/(m2a) |
Heating load |
10.0 W/m2 |
|
Space cooling | Cooling & dehum. demand |
12.0 kWh/(m2a) |
Cooling load |
10.0 W/m2 |
|
Frequency of overheating (> 25 °C) |
– % |
|
Frequency of excessively high humidity (> 12 g/kg) |
3.0 % |
|
Airtightness | Pressurization test result n50 |
1.0 /h |
Non-renewable Primary Energy (PE) | PE demand |
89.0 kWh/(m2a) |
Generation of renewable energy (in relation to projected building footprint area) |
43.0 kWh/(m2a) |
Multi family dwelling
140 m2
12 owners
Hellenic Passive House Institute (HPHI)
Planning phase
38 000 €
Dimitris Pallantzas
Hellenic Passive House Institute (HPHI)
Phone: +30 211 4081109
E-Mail: info@eipak.org