Commonly used air conditioning refrigerant performance comparison

at present, the common air conditioning on the market for refrigerant R410A and R22 and R407C.

410 a can from the characteristics of thermal engineering drawing is analyzed, the evaporation temperature - 40 ~ 10 ℃, within the scope of the steam density is 43% higher than that of R22, r410a latent heat of vaporization ratio R

considering the compressor efficiency loss, the same enclosed using R410A compressor refrigerating capacity will be about 50% higher than that of R22. If the optimization design of R410A system to replace R22 system, considering the decrease of flow, as well as the working medium circulation flow reduce caused by the heat exchanger, pipe, control the original size decrease factors, such as for small power air conditioning, R410A equipment cost may be cheaper than R22 equipment. But for high power air conditioning, high pressure steam to run the equipment investment and the increase of the weight it may become a question. Because with the increase of cooling load, R410A and weight of equipment needed for the safe operation of the investment will be rapid growth.

in environmental protection technology development and use of refrigerant R410A and R407C, should according to their different applications and different load in different environmental protection refrigerants:

( 1) For condensation at a lower temperature, such as water, using R410A technology can reduce the size of our equipment, improve the coefficient of performance.

( 2) Load the smaller type air cooling air conditioning system, such as rated load is 4 kw, by adopting the technology of R410A, can obtain higher coefficient of performance, and can control equipment investment.

( 3) For air cooling type air conditioning load is larger, there are two development trends, from the ease of development and investment saving perspective, R407c is better than that of R410A. Because of the former's very close to R22; From the perspective of improving coefficient and reduce equipment size, R410A better.

( 4) For the current R22 equipment renovation project, using R407C is more reliable than using R410A, not only low cost, and simple.

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