High Quality Content by WIKIPEDIA articles! Thermal transmittance, also known as U-value, is the rate of transfer of heat (in watts) through one square metre of a structure divided by the difference in temperature across the structure. It is expressed in watts per square metre per kelvin, or W/m K. Well-insulated parts of a building have a low thermal transmittance whereas poorly-insulated parts of a building have a high thermal transmittance.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.