By American Society of Heating Refrigerating and Air-Conditioning Engineers
This guide covers the refrigeration gear and structures for functions except human convenience. This publication comprises details on cooling, freezing, and storing nutrients; business functions of refrigeration; and low-temperature refrigeration. basically a reference for the training engineer, this quantity can be worthwhile for someone eager about cooling and garage of nutrients items. This version comprises new chapters. bankruptcy three, Carbon Dioxide Refrigeration platforms, describes the historical past of this "natural refrigerant" and why it's the topic of renewed curiosity at the present time. The bankruptcy includes dialogue and diagrams on CO2 refrigerant functions, procedure layout, apparatus, safeguard, lubricants, commissioning, operation, and upkeep. bankruptcy 50, Terminology of Refrigeration, lists a few of the universal phrases utilized in commercial refrigeration structures, fairly structures utilizing ammonia because the refrigerant.
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Additional info for 2010 ASHRAE Handbook - Refrigeration (SI Edition)
Capillary tubes may be installed downstream of a distributor with oversized orifices to achieve the required pressure reduction and efficient distribution. Existing gravity-flooded evaporators with accumulators can be connected to liquid overfeed systems. Changes may be needed only for the feed to the accumulator, with suction lines from the accumulator connected to the system wet return lines. An acceptable arrangement is shown in Figure 5. Generally, gravity-flooded evaporators have different circuiting arrangements from overfeed evaporators.
In bottom-feed evaporators, multiple headers with individual inlets and outlets can be installed to reduce static pressure penalties. For high lift ofreturn overfeed lines from the evaporators, dual suction risers eliminate static pressure penalties (Miller 1974, 1979). Distribution must be considered when using a vertical refrigerant feed, because of static pressure variations in the feed and return header circuits. For example, for equal circuit loadings in a horizontalairflow unit cooler, using gradually smaller orifices for bottom-feed circuits than for upper circuits can compensate for pressure differences.
Horizontal vapor-liquid separators. Hydmcarbon Pmcessing and petroleum Refiner(May). B. 1963. Discharge temperature considerations with multicylinder ammonia compressors. Modem Rebigeration (February). B. 1970. Advantages, disadvantages and economics of liquid overfeed systems. ASHRAE Symposium Bulletin KC-70-3: Liquid overfeed systems. P. 1971. Oil recovery from low temperature pump recirculating hydrocarbon systems. ASHRAE Symposium Bulletin PH-7 1-2: Effectof oil on the refrigerationsystem. Sonders, M.
2010 ASHRAE Handbook - Refrigeration (SI Edition) by American Society of Heating Refrigerating and Air-Conditioning Engineers