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5. Condensing pressure adjustment
The coefficient of performance of a refrigeration plant is all the better when, for the same evaporation temperature, the condensing pressure is itself lower, without being abnormally so. As mentioned above, in steady-state operation, mass flow is identical at the expansion valve, evaporator and compressor, and can be limited by any one of these three devices. This is the case when the compressor flow rate is greater than that of the fully open expansion valve. In fact, the mass flow rate of an expansion valve orifice is :
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Condensing pressure adjustment
Compressor flow control
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Standards and norms
- Refrigerants – Safety designation and classification - ISO 817 - 2014
- Systèmes frigorifiques et pompes à chaleur partie 1, 2, 3 et 4 - NF EN 378-1-2-3-4 - 2017
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EU Regulation No. 517/2014 of the European Parliament, of April 16, 2014 on fluorinated greenhouse gases and repealing Regulation (EC) No. 842/2006.
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