Evaporator refrigerant evaporation temperature, should be lower than the air temperature, so that the heat of the room will be transferred to the refrigerant, the refrigerant absorbs heat and evaporates into a gas, by the compressor suction, so that the pressure of the evaporator will not be evaporated due to the heat of the gas too much pressure, so that the evaporation temperature is also higher, so as to affect the effect of refrigeration, and the difference in the temperature of this combination of air-conditioning investment costs, and refrigeration work when the energy consumption The cost of this temperature difference is combined with the investment cost of air conditioning, and energy consumption during refrigeration work and comprehensive decision.
Factors affecting the evaporation temperature are as follows:
1. evaporator pipe oil: under normal circumstances due to lubricating oil and Freon soluble in the heat exchanger surface will not form a film of oil, you can not consider the oil film thermal resistance, but in the case of additional lubricants, you must use the same lubricating oil and the original standard to prevent the production of oil film.
2. Air filter clogging: filter must be replaced regularly to ensure that the air conditioning required by the circulating air volume.
3. Filter drier clogging: in order to ensure the normal circulation of the refrigerants, the refrigeration system must be kept clean a
nd dry, if the system has impurities, it will cause filter drier clogging, the system is difficult to supply liquid, affecting the effect of refrigeration.
4. Too little refrigerant, additional Freon.