Heating systems and ventilation

Heating system, heating system and the difference of central air conditioning system is through the radiator heat from the hot water or steam to the room, rather than by air exchange as central air conditioning system. Heating system is the main heat source of the boiler, the size of the central heating from a building to a city in the region and even the whole city. Because of the cold region heating is necessary for people's life, so occupied large proportion of heating in building energy consumption in our country. ( 1] General ventilation include ventilation, narrow ventilation can be understood as no heat transfer between indoor and outdoor air exchange. When the outdoor air temperature and cleanliness suitable with ventilation can also only will indoor environment to adjust to an acceptable level, so save a lot of energy than heating and air conditioning.