KJSET Volume. 1, Issue 1 (2022)


Emmanuel O. Sangotayo, Stephen N. Nnamchi, Mustpha M. Mundu, Kibogo Ibrahim


Temperature Cooling Chiller system performance parameter

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Performance Evaluation of the LSBLG 1200/MCF Water-cooled Chiller Air Conditioning System

Abstract: Air conditioners regulate temperature and humidity and improve air quality. After several years of immaculate operation, the system started malfunctioning, resulting in several resident complaints. This study aims to assess the effectiveness of the central water chiller air conditioning system. In order to analyze the effect of local time and temperature on the performance parameters of the LSBLG 1200/ MCF model central water chiller and cooling tower, the intake and output temperatures were measured for a period of 8 hours using the in-built temperature display. Coefficients of Performance and Energy Efficiency Ratios of the cooling system were determined using empirical governing equations of the performance parameter, and the SAS package was utilized to construct characteristic curves. The results revealed that local time has a dynamic effect on the performance parameter, but temperature has a direct proportionate effect on the cooling system's effectiveness. The maximum coefficients of performance for the chiller and cooling tower are 52 and 20, respectively. The chiller and cooling tower have respective Energy Efficiency Ratios of 177 and 68. The greatest amount of cooling happened between 1p.m and 3 p.m. A greater coefficient of performance indicates enhanced performance and decreased electrical energy use. Variable speed retrofits are recommended for increasing chiller effectiveness because variable speed drives will benefit the majority of components in a chiller water system.