This natural passive house design was refined by ies software in order to achieve maximum possible energy gains and savings. It is a simple double story loadbearing strawbale family home with an integrated conservatory, that enables maximum solar gain within the building while minimizing heat loss through the double glazed windows.
The conservatory forming the internal courtyard is opening to the south and creates an intermediate buffer between the main interior space and the external environment. The conservatory maintains an ambient temperature.
The design of the 130m2 family home achieves passive house standard (see essay [pdf]). Which means that its energy consumption doesn't exceed 20kWh/m2 per annum. This is a measure ensuring that the interior is heated merely by the presence of people, electrical appliances and passive solar heat gain.
In order to achieve the passive house standard, modern conventionally built houses need expensive heat recovery system that do not work properly unless the building is wrapped in an extremely air tight building envelope. However, in this case, ies computer simulation proves that this design complies with passive house standard without a heat recovery and without any airtight barrier within its envelope. ies software enables to design a building with passive house characteristics in any location and site specific conditions, while using locally sourced natural materials and conventional double glazed windows - all in accordance with highest environmental objective (the use of triple glazing had been omitted because of it's expense and energy intensive manufacturing process).
ies software helps to integrate specific local building conditions, client requirements and environmentally appropriate construction in order to achieve the ideal thermal performance of the home from the early stages of the design process. ies computer simulation unravels the most important characteristics playing a crucial role in setting up the maximum energy saving potential of each design.
With an independent electrical energy source and a hot water supply placed on its flat green roof one could say that Passive Natural House doesn't squint at the sun, it offers its heart to it. Its interior embraces surrounding nature that freely flows in and out of the building.