R407c is a mixture of R32 refrigerant and R125\/ refrigerant plus R134a refrigerant in a certain proportion, compared to R22 refrigerant, it is an environmentally friendly refrigerant that does not damage the ozone layer. It is also an HFC refrigerant used to replace the R22 refrigerant. Although the performance of R407C refrigerant and R22 refrigerant is very familiar, but R407C refrigerant and R22 refrigerant there are many differences, let's understand the relevant differences between R407C refrigerant and R22 refrigerant.
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1, R407C belongs to the mixed refrigerant, R22 belongs to the single refrigerant.
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2, R407C does not destroy the ozone layer, is an environmentally friendly refrigerant; R22 refrigerant is very harmful to the ozone layer, and it is now being gradually replaced.
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3. R407C has an evaporation pressure very close to R22, but the condensing pressure is slightly higher than R22.
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4. The research shows that the relative thermal conductivity of R407C during evaporation is 83% of R22; The relative thermal conductivity of R407C at condensation is 85% of that of R22.
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5, due to the influence of thermal conductivity and evaporation temperature and condensation temperature under the same pressure, the heat transfer capacity of the R407C system is worse than that of R22, and the area of the heat exchanger must be increased (about 10%) to achieve the same capacity and COP.
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6, some data and test results have shown that the charge amount of R-407C refrigerant is 90% to 95% of R22 refrigerant.
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7, Generally speaking, the suction pressure of R407C refrigerant is lower than that of R22 refrigerant.
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8, the exhaust pressure of R407C refrigerant is higher than that of R22 refrigerant.
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9, the COP value of R-407C refrigerant is lower than that of R2 refrigerant.