The Refrigeration Load - HVAC and Refrigeration Information Links
The Refrigeration Load - HVAC and Refrigeration Information Links The Refrigeration Load - HVAC and Refrigeration Information Links
VENTILATING AIRIf positive ventilation is provided for a space by means ofsupply or exhaust fans, the ventilation load will replacethe infiltration load (if greater) and the heat gain may becalculated on the basis of the ventilating air volume.INFILTRATION HEAT LOADper cubic foot of infiltration as given in Table 9. For accuratecalculations at conditions not covered by Table9, the heat load can be determined by the differencein enthalpy between entering air and the storage roomair conditions. This is most easily accomplished by useof the psychrometric chart, which will be discussed indetail in a subsequent section.Once the rate of infiltration has been determined, theheat load can then be calculated from the heat gain13-2© 1968 Emerson Climate Technologies, Inc.All rights reserved.
- Page 2 and 3: FOREWORDThe practice of refrigerati
- Page 4 and 5: INDEX OF TABLESTable 4 Typical Heat
- Page 7 and 8: VALUES OF THERMAL CONDUCTIVITY FORB
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- Page 13: QUICK CALCULATION TABLE FORWALK-IN
- Page 17 and 18: Section 14PRODUCT LOADThe product l
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- Page 23 and 24: SENSIBLE HEAT ABOVE FREEZINGMost pr
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- Page 31 and 32: Section 16EQUIPMENT SELECTIONOnce t
- Page 33 and 34: The condensing temperature depends
- Page 35 and 36: CONDENSER CAPACITY CURVES SUPERIMPO
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- Page 39 and 40: a condensing temperature 20°F abov
- Page 41 and 42: Note that although the compressor c
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VENTILATING AIRIf positive ventilation is provided for a space by means ofsupply or exhaust fans, the ventilation load will replacethe infiltration load (if greater) <strong>and</strong> the heat gain may becalculated on the basis of the ventilating air volume.INFILTRATION HEAT LOADper cubic foot of infiltration as given in Table 9. For accuratecalculations at conditions not covered by Table9, the heat load can be determined by the differencein enthalpy between entering air <strong>and</strong> the storage roomair conditions. This is most easily accomplished by useof the psychrometric chart, which will be discussed indetail in a subsequent section.Once the rate of infiltration has been determined, theheat load can then be calculated from the heat gain13-2© 1968 Emerson Climate Technologies, Inc.All rights reserved.
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