Hvac Necessary knowledge
DATE:2023-08-28
Read:
SHARE:
Hvac Necessary knowledge:
Central air conditioning: Central air conditioning is a host through the air duct or hot and cold water pipes to control different rooms to achieve the purpose of indoor air conditioning. That is to say, the heating and cooling of all rooms are supplied by it, and there is only a fan in each room, and the original cooling machine is integrated into a box.
Central air conditioning system: there are main engine and terminal system. According to the medium used to load indoor heat and humidity load, it can be divided into all-air system, all-water system, air-water system, and refrigerant system. According to the concentration of air treatment equipment can be divided into centralized and semi-centralized. According to the source of the treated air, it can be divided into closed, direct flow, and mixed (one return air and two return air). The main components of the equipment are air conditioning host (cold and heat source) air cabinet, fan coil and so on.
Refrigerant: refrigerant is the refrigerant working medium, which is the working medium for completing the refrigeration cycle in the refrigeration system. The refrigerant absorbs the heat of the cooled object in the evaporator and evaporates, and transfers the heat to the surrounding air or water in the condenser and is condensed into a liquid body. The refrigerator achieves the purpose of cooling by means of the state change of the refrigerant.
Refrigerating capacity: the heat absorbed by the refrigerant on the low pressure side in the evaporator during the refrigeration operation of the air conditioner per unit time.
Back
Central air conditioning: Central air conditioning is a host through the air duct or hot and cold water pipes to control different rooms to achieve the purpose of indoor air conditioning. That is to say, the heating and cooling of all rooms are supplied by it, and there is only a fan in each room, and the original cooling machine is integrated into a box.
Central air conditioning system: there are main engine and terminal system. According to the medium used to load indoor heat and humidity load, it can be divided into all-air system, all-water system, air-water system, and refrigerant system. According to the concentration of air treatment equipment can be divided into centralized and semi-centralized. According to the source of the treated air, it can be divided into closed, direct flow, and mixed (one return air and two return air). The main components of the equipment are air conditioning host (cold and heat source) air cabinet, fan coil and so on.
Refrigerant: refrigerant is the refrigerant working medium, which is the working medium for completing the refrigeration cycle in the refrigeration system. The refrigerant absorbs the heat of the cooled object in the evaporator and evaporates, and transfers the heat to the surrounding air or water in the condenser and is condensed into a liquid body. The refrigerator achieves the purpose of cooling by means of the state change of the refrigerant.
Refrigerating capacity: the heat absorbed by the refrigerant on the low pressure side in the evaporator during the refrigeration operation of the air conditioner per unit time.