The optimal parameters in series-series counterflow chillers system within air conditioning

Abstract

If water-chillers are arranged in series-series counterflow, compressor lift of each chiller will he decreased in comparison with water-chillers in parallel. Thai means that compressor power of the chillers in series will lower than that of chillers in parallel. However, water pressure drop flow through the chillers in series will increase, i. e., increase power of water pumps. This disadvantage will he made good by increasing the temperature difference of water flow through evaporator and condenser, but the water flow rates will decrease. This paper explores the optimal parameters in system of series-series counterflow for central chilled water plants such as the leaving chilled water temperature, the leaving condenser water temperature, condenser water flow rate and number of chillers in series.