ABS (American Building System S.L.), a manufacturer of industrialized modular dwellings, is continuing its policy of energy efficiency, by adapting all its catalogue of dwellings to Almost Zero Consumption. This commitment had led ABS to certify the –FIRST PASSIVE MODULAR DWELLING- in Europe.
ABS uses G-Brick 12-120-12 (U= 0.31W/m) panels as a structural element in its Passive buildings. The panels are finished with poplar wood which together with their dimensions help reduce the joints between them, so enhancing the airtightness and reducing the manufacturing times. Together with Passivhaus certified PVC profiles from Deceuninck with 4-16-4-16-4 Ar glass by Saint-Gobain Glass, the removal of thermal bridges and an exhaustive study of all the details of the construction so as to avoid exterior infiltrations, the following thermal transmittance values have been achieved: ground 0.314 W/m²K, roof 0.142 W/m²K and façade 0.146 W/m²K.
The climate control system in ABS dwellings is made up of an aerogeothermal system (developed by ABS), a heat recovery unit (Zehnder) and an aerothermal unit (Daikin) with a coil for reheating the supply air.
Here are some of the data obtained during the Passivhaus certification process of the FIRST PASSIVE MODULAR DWELLING by ABS;
- Blower-Door airtightness test: 0.55 ren/h.
- Demand for heating 19 kWh/(m²a) and load of 10 W/m².
- Demand for cooling 8 kWh/(m²a) and load of 6 W/m².
This dwelling has also been subject to a Life Cycle Analysis (which will be published in mid- November) in which they calculate all the energy consumption “from the cradle to the grave” and the CO2 emissions, achieving values that are inconceivable in traditional forms of construction.