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 .
You can also check condenser pressure-temperature values by using Column 3. A discharge pressure of 226 psig with R-22, for example, means that the normal condensing temperature is 110°F. Note, how-ever, that the condensing temperature should not be confused with: ™ entering and leaving air temperatures of an air-cooled condenser
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