ARCHITECTURAL DESIGN COMPETITION

FOR PASSIVE HOUSE IN BULGARIA

Buhus Cosmin Gabriel, Voiculescu Ioana

(268 - user rating)

Building-Metric-Sheet-58.xls

Along with the technical and industrial developments of massive proportions of the 21st century also came a lot of problems that severely harm us as well as the environement (pollution, fuel consumption in outrageous quantities, C02 emmisions, the ussage of natural resources to a greater extent then ecconomically sound, etc.)
A considerable amount of the fuel consumption goes into heating up the buildings from the public sector as well as the private one. In what concerns the private sector there have been a lot of innitiatives towards what we know as “green architecture”, “sustainable houses” and, lately, “passive housing”.
The project we have submitted in this competition takes into account all the problems listed above and uses some of the latest innovations and technologies when it comes to sustainablility.
We approached this project from various directions: the low energy consumption for heating/year, the posibility of the house producing its own energy as much as possible, the possibility of reciclying consumables such as – tap water, biodegradable waste and so on for natural uses in the houses courtyard.
The first direction: making the house as heating-effective as possible. By the use of various materials (such as it is explained in the Excel File) we have thrived to keep the temperature fluctuations inside the house to a minimum therefore having a pleasantly warm temperature in the winter and a pleasantly cool one in the summer – the approximate value being that of 22-23 degres. By using various new Schuco technologies such as the thermal insulation pannes, the multi-layered, energy-generating curtain walls (with added insulation and photovoltaic cells), the thermoactive walls (with heat recovery and heat storage) but also by thinking of a heat distribution system and the use of thermal discharge of humans, animals and household apliances, the CO2 emmisions, as well as the heat losses are reduced to a minimum. Such technologies reduce CO2 emmisions with as much as 80% and the energy consumption for heating the whole place up with as much as 1000kWh/m2 per year.
Also, we should take into account this house’s ability to produce its own energy. As we calculated, each family member (there being three) consumes the energy supplied by 4 solar panels if these function at their maximum capacity. Seing as this isn’t often the case we supplied 4 times the amount, firstly in case that it more often doesn’t reach its maximum rather than it does, secondly because they could store energy that can be used also by their two neighbours with older and les technologised houses. We also have 9 solar thermal colectors used for heating up water, but in this case as well we thought that more often then not they will not be able to acheive their full potential so we propose a geothermal heating pump.
Also, on the north facade we tried a more “natural” solution – that is to say a green living, breathing photosynthesizing wall. This wall is used firstly as a very powerful insulation factor since on the north facade we have the least heated part of the house. Furthermore, it’s self-sufficient and soil free – the plants receiving water and nutrients from vertical suports along the facade rather than the ground. This pretty much mimics the capilary action that plants use naturally to grow vertically on cliffs, bluffs, branches or along waterfals. This living wall helps insulating the building, but also purifying the air and transforming the gray concrete into a more pleasant shade of green. It also enhances biodiversity while also providing natural skin system that decreases the energy usage.