Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/58589
Title: Optimizing chiller operation based on finite-time thermodynamics: Universal modeling and experimental confirmation
Authors: Gordon, J.M.
Ng, K.C. 
Chua, H.T. 
Keywords: Component
Optimization
Performance
Simulation
Thermodynamics
Water cooler
Issue Date: 1997
Source: Gordon, J.M.,Ng, K.C.,Chua, H.T. (1997). Optimizing chiller operation based on finite-time thermodynamics: Universal modeling and experimental confirmation. International Journal of Refrigeration 20 (3) : 191-200. ScholarBank@NUS Repository.
Abstract: The efficiency of chillers (refrigeration and heat pump devices) is limited by the dissipation from their principal components: compressor, throttler, and heat exchangers at the condenser and evaporator. Developing a generalized finite-time thermodynamics model for reciprocating chillers, we derive analytic formulae for how the fixed finite resources of cycle time and heat exchanger inventory should be allocated so as to optimize chiller performance. Our predictions for optimal operating schemes are compared with detailed experimental data from two different commercial chillers. The agreement between theory and actual performance data attests to the empirical wisdom that has evolved in chiller manufacture. Besides quantitatively documenting the individual sources of irreversibility, we show how the limitations of currently-available chiller components affect optimal chiller design, as well as how potential steps to improve chiller efficiency can be evaluated within a universal thermodynamic framework. © 1997 Elsevier Science Ltd and IIR.
Source Title: International Journal of Refrigeration
URI: http://scholarbank.nus.edu.sg/handle/10635/58589
ISSN: 01407007
Appears in Collections:Staff Publications

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