Low Energy House Design
When considering how to create a low energy house there are several areas which need to be considered.
Orientation
In order to maximise the lowest possible energy demands it is important to recognise that the solar orientation is crucial .The prevailing climate, site layout, design and positioning of windows and room location need to be analysed at a very early stage wherever possible.
South facing windows and roofs add to the solar gain which can be distributed throughout the house as required. In hot climates bedrooms are usually located on the northerly aspect in order to keep them cooler at night.
Solar photovoltaic cells installed on south facing roofs offer the best results and solar water heating systems will help raise the ambient temperature for domestic water heating for many months of the year. Even if this is only a few degrees it cuts down on energy use.
Installing individual solar panels to power outside security lighting or even for operating features such as security shutters or garage doors opening systems is easy and cost effective.
Construction materials
Concrete, brick and stone all absorb heat .During the day this builds up and radiates through the fabric of the building as the outside temperature cools down in the evening. High levels of insulation will help to keep the heat in during the winter thus reducing energy consumption and also keep the house cooler during hot weather.
It is a fact that houses built into the ground such as cave houses have a more equable interior temperature all year round. This principal can be adapted in zero energy houses by the use of compacted earth around the external walls.
If you have a garage, then consider installing an insulated sectional garage door or roller garage doors to keep it draught proof and warm. This gives added benefit for rooms above the garage or leading off from it, such as the kitchen or utility room.
Sun awnings and sun shading systems installed in areas where excessive heat is a problem in summer help reduce the need for fuel hungry air conditioning units.
Day to day living
Most domestic appliances generate a certain amount of heat within the home. In the kitchen the process of making a meal may be the obvious source of heat and it makes sense to fit thermostatic radiator valves so you can regulate individual zones within the house as required rather than having one central thermostat.
Using a computer and electric lights, especially halogen, generates heat. Think carefully about leaving these items switched on when not totally necessary.
Energy Efficient Domestic Electrical Equipment
All domestic appliances are now rated according to their energy efficiency so it is easy to check which models offer the best results. Most modern fridges, freezers, dishwashers and washing machines comply with standards aimed at keeping energy use as low as possible.
All in all there are many ways energy levels can be kept as low as possible to the benefit of everyone whether by simple lifestyle changes or using the latest technology.
