Cold and dry low evaporation temperature or why not
AMC
AMC
2015-12-21 10:13:07
Cold and dry in normal conditions the surface layer of a film evaporator condensate water is present, if the evaporator temperature drop very low, so that the heat exchanger surface brass in subzero temperatures, water vapor will in brass
Surface condenses into frost, there are problems with this because the water vapor produced by sublimation of frost than the condensation of dew to absorb about 15 percent more cooling capacity, so that the machine you want to reduce the amount of processing;
Another frost thermal conductivity is only 1/4 of the water, so that the tube can not be sufficiently cooled outside air, while the evaporation temperature of the tube there is further decreased, the results of this cycle, will give the refrigeration system
Bring a lot of negative consequences such as liquid compression;
And the presence of frost will increase air resistance, so that the gas pressure decreases, serious or even cause air blockage.
Surface condenses into frost, there are problems with this because the water vapor produced by sublimation of frost than the condensation of dew to absorb about 15 percent more cooling capacity, so that the machine you want to reduce the amount of processing;
Another frost thermal conductivity is only 1/4 of the water, so that the tube can not be sufficiently cooled outside air, while the evaporation temperature of the tube there is further decreased, the results of this cycle, will give the refrigeration system
Bring a lot of negative consequences such as liquid compression;
And the presence of frost will increase air resistance, so that the gas pressure decreases, serious or even cause air blockage.