The meaning of doors and windows
Doors and windows refer to things reserved for lighting and ventilation to communicate with the outside world.
Doors and windows are doors and windows. ? Doors and windows are divided into closing members or partition members according to their different positions. There are different design requirements with the functions of heat preservation, heat insulation, sound insulation, waterproof and fire prevention. The new requirement is energy saving. The heat loss from the gap between doors and windows in cold areas accounts for about 25% of the total heating heat consumption.
The air tightness requirement of doors and windows is an important content in energy-saving design. Doors and windows are an important part of building envelope system.
Speaking of the nickname of the window, the first one is the window, and it is a well-known saying that the window is a cloud. Therefore, the ancients called the window simple and clear, and it was often the case in ancient times. One word in a noun is used to refer to the whole noun.