Analysis of Multi-Stage Centrifugal Chiller System for Air Conditioning for Energy Conservation in Large Shopping Centers

Abstract

This presentation is an analysis of multi-stage compressed water cooling systems for air conditioning to conserve energy in a large shopping center building. In order to a guideline and transfer knowledge to the control building improvement, efficiently using in the electrical system and resulted in energy saving to the energy conservation plan. From the results, it found that the multi-stage compressed water chiller size of 1,000 TON and the loading at 100, 75, and 25 %, which was the net cooling target. It shown the value of the water temperature and returning to the condenser and evaporative cooling system. This system showed the cooling performance ( kW/ton) with loading of 100, 75 and 25 percent at 0. 5308, 0. 5273 and 0. 7827, respectively. The coefficient of performance ( COP) is 6.626, 6.670 and 4.493, respectively. Therefore, the measurement of energy consumption of a 1,000 TON before the improvement had the use of electricity per ton of cooling capacity higher than the multi-stage compressed as the 28 % at the loading of 100 %.