Buildings exist to give shelter, privacy and security to their occupants and equipment. In most parts of the world the natural thermal conditions do not provide adequate comfort for humans, or even conditions for survival, and. for most human activities, the enclosures provided must give basic amelioration of the naturally occurring thermal extremes. In addition, in most places, some form of additional energy input will be required to maintain comfort levels. Это и многое другое вы найдете в книге Practical Thermal Design in Buildings (Peter Burberry)