The Role of Condenser Approach Temperature on Energy Conservation of Water Cooled Chiller

Suamir, I Nyoman and Baliarta, I Nyoman Gede and Arsana, Made Ery and Temaja, I Wayan (2017) The Role of Condenser Approach Temperature on Energy Conservation of Water Cooled Chiller. Advanced Science Letters, 23 (12). pp. 12202-12205. ISSN 1936-6612

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Abstract

This paper presents numerical and experimental study on condenser approach temperature and its effects to the temperature and energy performances of water-cooled chillers. Performance characteristic of the chillers was analyzed at different approach temperatures and refrigerants. Numerical models have been developed in EES (Engineering Equations Solver) program to simulate the performance of chiller systems. The models were validated using data obtained from experimental investigation in hotel industries. The results showed that the increase of condenser approach temperature could cause the chiller system to operate at a lower performance. The increase of condenser approach temperature by 1 K could reduce coefficient of performance (COP) of about 3.45%, 3.4%, 3.3% and 3.6% respectively for chillers with R-22, R-134A, R-407C or R-410A. This paper also presents the characteristic of condenser approach temperature that can be used as early warning system for chiller operation and maintenance in order to keep the best possible performance

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