Simulation and performance analysis of a 4-effect lithium bromide-water absorption chiller

Conference · Wed Feb 01 04:00:00 EST 1995

OSTI ID:10120519

Grossman, G ^[1]; Zaltash, A; DeVault, R C ^[2]

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1. Technion-Israel Institute of Technology, Haifa (Israel)
2. Oak Ridge National Lab., TN (United States)

Performance simulation has been conducted for a 4-effect lithium bromide-water chiller, capable of substantial performance improvement over state-of-the-art double-effect cycles. The system investigated includes four condensers and four desorbers coupled together, forming an extension of the conventional double-effect cycle; based on prior analytical studies, a parallel flow system was preferred over series flow, and double-condenser coupling was employed, to further improve performance. A modular computer code for simulation of absorption systems (ABSIM) was used to investigate the performances of the cycle. The simulation was carried out to investigate the influence of some major design parameters. A coefficient of performance around 2.0 (cooling) was calculated at the design point, with a heat supply temperature of 600{degrees}F (315{degrees}C) at the solution outlet from the high temperature desorber. With some optimization of the weak (pumped) solution flowrate and of the solution split among the four desorbers, this COP may be raised above 2.2.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10120519
• Report Number(s): CONF-950104--5; ON: DE95007043
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106
ABSORPTION REFRIGERATION CYCLE
BUILDING EQUIPMENT
COEFFICIENT OF PERFORMANCE
COMPUTERIZED SIMULATION
COOLING SYSTEMS
LITHIUM BROMIDES
RESIDENTIAL BUILDINGS
WATER