Purge needs in absorption chillers

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · ASHRAE Journal (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (United States)

OSTI ID:5526152

Murray, J G ^[1]

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1. Battelle, Columbus, OH (United States)

Absorption chillers are regaining a significant share of large tonnage chiller sales, such as they had 20 years ago. Gas-fired chillers are now available that have a base energy (ultimate fuel usage) consumption rate per ton comparable to that in electric units. Effective purging in an absorption chiller is an absolute necessity to achieve the low chilled water temperature needed for dehumidification and to fully benefit from the energy savings offered by double-effect cycles. Although the purge system is usually not shown on the typical cycle schematic, its proper functioning is a key requirement for satisfactory machine operation. This article discusses the effect of noncondensible (N/C) gases on the absorption cooling process and the basics of purge systems. In addition, the article discusses the rationale for the important design step of selecting the location of the N/C probe, and discusses purge systems applicable to the direct-fired, double-effect machines now entering the marketplace.

• OSTI ID: 5526152
• Journal Information: ASHRAE Journal (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (United States), Vol. 35:10; ISSN 0001-2491
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
REFRIGERATING MACHINERY
ABSORPTION REFRIGERATION CYCLE
ENERGY EFFICIENCY
GASES
MAINTENANCE
OPERATION
WATER
WORKING FLUIDS
EFFICIENCY
EQUIPMENT
FLUIDS
HYDROGEN COMPOUNDS
MACHINERY
OXYGEN COMPOUNDS
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)