As in the winter period when there is a necessity to heat a building, likewise in the summer period there is heating of parts of the building on the southern, south-eastern and south-western parts. Sunshine which is evident during the day emits a lot of heat energy, which during winter is seen as additional heat which heats up a building, while in summer it causes excessive rises in temperature causing discomfort and worsening of work conditions. In order to reduce temperature in homes or office buildings air-conditioning systems are commonly used. This is associated with additional costs and it is worth noting that the costs of cooling buildings is higher than the costs of heating. So as to reduce the costs of cooling it is necessary to apply the following types of glass in windows and facades of buildings:
» Solar control glass units which are dyed in mass
» Reflexive solar control glass units
The application of such glass, especially that which is dyed in mass during the winter period can cause reduced light transmission to a building especially on the northern side. In order to preserve the high level of light transmission, as well as significantly reducing the infiltration of solar energy it is necessary to use the following:
» Selective solar control glass (dual function) |
