Transcription of UNDERSTANDING REFRIGERANT TABLES
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UNDERSTANDING REFRIGERANT TABLES
Refrigeration Service Engineers Society 1666 Rand Road Des Plaines, Illinois 60016. UNDERSTANDING REFRIGERANT TABLES . INTRODUCTION setting of controls A Mollier diagram is a graphical representation of the checking temperature according to pressure properties of a REFRIGERANT , generally in terms of enthalpy and entropy. A familiarity with these dia- computing correct head pressure for a specific grams will make this chapter easier. An understand- set of operating conditions ing of the pressure-temperature relationship of refrigerants as they pass through the refrigeration setting expansion valve superheat compression cycle also will help you as you study this chapter on REFRIGERANT TABLES . noting pressure drop Part of this chapter deals with a REFRIGERANT (R-22) evaluating REFRIGERANT capacities of cylinders and that will soon be phased out of production.
follow. R-22 will soon be phased out, so you will not see it as much as you do other refrigerants in the future. However, all other refrigerant tables work essentially the same way as the R-22 example. This chapter will review the older refrigerant (R-22) first, and then refer to one of the newer replacement refrigerants (R-410A).
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