Heating principle of household air conditioning and refrigeration principle respectively is what?
Estimate what you said is household air conditioning. Refrigeration principle: compressor work makes evaporator () in the indoor machine is in low pressure condition, the rapid evaporation absorbs heat liquid refrigerant inside the evaporator, air blown air after cooling evaporator coil into a cold wind blow to indoor, after evaporation vaporization of the refrigerant by compressor pressure, under the environment of high pressure in the condenser (seg) condenses into liquid, releasing heat, through the fan, outdoor will heat to the atmosphere, so to reach the refrigeration effect. Heating principle: one kind is contrary to the cooling process, the imagine in the summer, the exchange and the house, the room is hot air blow out, of course, in the winter outdoor temperature is very low, this way of heating efficiency is very low. The second is heating, electric heating tube directly convert electrical energy into heat energy, high efficiency, is generally used in ark on the high power monomers such as air conditioning. There are many forms of central air conditioning heat and cold source, such as electric refrigeration (the principle is the same as household air conditioning refrigeration principle) + boiler, lithium bromide absorption direct-fired machine, ground temperature (hot) central air conditioning, ice storage cold storage central air conditioning and so on. Actually, removed by burning or electricity direct heating, refrigeration and heating principle of the other popular speak be heat transport
To the book city Buy a book and have a look.Simple said is liquefaction and gasification
Freon will gas compressor (snow) compression of freon for high temperature and high pressure, and then sent to the condenser (seg) became normal temperature after heat high pressure liquid freon, so the blow out outdoor hot air. And then to the capillary, into the evaporator (indoor machine), because the freon from capillary to evaporator space suddenly increases, pressure decreases, and the liquid freon will vaporize, become a gas at low temperature of freon, to absorb a lot of heat, the evaporator will become cold, indoor machine of the fan will indoor air blows from the evaporator, so indoor machine out of the cold wind is blowing; Water vapor in the air is cooled after the evaporator will condense into water droplets, along the conduit flow, this is the reason why air conditioning will be out of the water. Then gaseous freon to go back to the compressor compression, continue to cycle. Heating has a call four-way valve components, freon in when the direction of flow of condenser and evaporator refrigeration instead, so the heating when the cold wind blowing, outdoor indoor machine blowing hot air. Is actually used in the junior middle school physics learned the liquefaction (changed from gas to liquid) to emit heat and evaporation from liquid to a gas () to the principle of heat absorption.
