The basic principles of energy efficient design are to achieve the right balance between – maximizing heat gain in winter, minimizing heat gain in summer, and minimising heat loss in winter.
To achieve this result it is necessary to consider:
– The size of the home necessary to accommodate the number of people who ae going to live in it.
– The orientation of the block to gain the best passive solar advantage,
– The type of building materials to be used,
– The use of mass for thermal storage,
– The best possible insulation to minimise heat loss in winter and heat gain in summer,
– The overall location and size of windows and/or external glass doors,
– The location of windows and/or glass sliding doors on the north side of the home to get ben from the sun in winter,
– Shading all north facing glass in summer,
– Minimising east and west facing glass, and where necessary ensuring that it is full shaded externally during summer,
– Reducing south facing windows to cut back on excessive heat loss in winter,
– The use of double glazing or low-e glass for south facing windows,
– Locating opening windows and/or sliding doors to allow cross ventilation to provide cooling effects in summer,
– The efficiency of heating and cooling provisions,
– The efficiency of HWS and other appliances, and
– Efficient lighting provision.