Transcription of UNDERSTANDING REFRIGERANT TABLES
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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.
™ evaluating refrigerant capacities of cylinders and receivers ... specific volume of liquid For R-22 at 70°F, the specific 2. ... of the table is simply to find out how much heat is required to warm a pound of liquid refrigerant from one temperature to a higher temperature.
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