Impact of ambient pressure on performance of desiccant cooling systems

Conference · Sun Dec 01 00:00:00 EST 1991

OSTI ID:5941577

Pesaran, A A

The impact of ambient pressure on the performance of the ventilation cycle desiccant cooling system and its components was studied using computer simulations. The impact of ambient pressure depended on whether the system was designed for fixed-mass flow rate or fixed-volume flow rate operation. As ambient pressure decreased from 1.0 to 0.8 atm, the system thermal coefficient of performance increased by 8% for both fixed-mass and fixed-volume flow rate, the cooling capacity of the system (in kW) was decreased by 14% for the fixed-volume flow rate system and increased by 7% for the fixed-mass flow rate system, the electric power requirements for the system with fixed-volume flow rate did not change, and the electric power requirement for the fixed-mass flow rate system increased by 44%. The overall coefficient of performance increased up to 5% for the fixed-volume flow rate systems, and decreased up to 4% for the fixed-mass flow rate system. 16 refs.

• Research Organization: National Renewable Energy Lab., Golden, CO (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-83CH10093
• OSTI ID: 5941577
• Report Number(s): NREL/TP-254-4601; CONF-920429-1; ON: DE92001180
• Resource Relation: Conference: International solar energy conference, Honolulu, HI (United States), 4-8 Apr 1992
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COOLING SYSTEMS
PRESSURE EFFECTS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
DESICCANTS
ENERGY EFFICIENCY
EVAPORATIVE COOLING
FLOW RATE
HEAT EXCHANGERS
PERFORMANCE
COOLING
EFFICIENCY
EVALUATION
SIMULATION
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)