Today many people want buy energy saving house arguing that, it warm. But there are warm or low-energy house? The house can be warm, if its good heat with wood, gas, electricity. But will such a house to save energy, will it be called energy-saving? Probably not. To make the house really warm, it must not only be warmed up well, but also take care of that, so that the warmth does not leave the house.
Energy saving home: classification
There is the following classification of energy efficiency of houses (true it is accepted in Europe, and not all that is good for a European, it will be just as good in our conditions):
- low energy houses
- ultra-low power consumption
- passive (not needing heating)
note! In our country, building a home with zero energy consumption is too expensive, and doesn't always make sense.
How to build an energy efficient home? Choice of materials
Energy efficient, also known as energy efficient home, can be built using completely different technologies, although each of them must meet the criteria for thermal conductivity. One of them is the so-called three-layer walls.. Each layer performs a specific function in them., therefore they ensure tightness, strength and acoustic and thermal insulation.
Another interesting solution is two-layer walls with a supporting and insulating layer of expanded polystyrene or cotton wool.. Of course, it is not always easy to provide the wall with enough heat, therefore it is necessary to take care of a sufficiently thick material. The single-layer walls are also worth mentioning., the advantage of which is vapor permeability, providing a favorable microclimate at home and reducing the risk of fungal growth.
The most important structural element of the wall is steel or wood reinforcement. Outside, the wall consists of OSB boards and plasterboard from the inside. The free space is usually filled with mineral wool.
No matter, which technology will be chosen, it must be built on a solid foundation. Expected, that they are not only durable, but also have a low absorbency and must be resistant to frost and the effects of chemical and biological substances. Most often, reinforced concrete and cement are used for their manufacture..
In houses with an attic, pitched roofs are recommended.. They have the smallest surface area to cubic capacity ratio. Do not forget about the importance of windows and doors - modern and warm. Considering the choice of windows, the heat transfer coefficient U, which should not exceed 1,1. It is good to use skylights in the attic., which additionally isolate and illuminate the building.
Energy saving installations
An energy efficient home shouldn't lack modern hardware, as they have a direct impact on cost reduction, related to electricity consumption.
The heat pump turns out to be interesting, but at the same time an environmentally friendly and energy-saving heating solution. Its installation is associated with the possibility of using free renewable energy, which is located, including, in soil and water. The heat pump is maintenance-free, therefore its use is convenient.
Another solution, noteworthy, is ventilation with recuperation. This allows you to significantly reduce heat losses and at the same time the recuperator heats the air, supplied to the building by the heat already in the air.
A low energy building can also have a sun canopy, designed for water heating. Collector, used in such a system, attracts attention, in particular, themes, what does it provide up to 60 % heat, required for heating domestic water per year.
