Energy consumption analysis and energy saving optimization of direct-fired lithium-bromide absorption-type water chiller in summer operation condition

Tests the COP and cooling capacity of a chilled and hot water unit in a machine room under two different operating conditions of the closed and open inlet and outlet valves of chilled water. The results show that the COP at the condition of closed valve is higher than that at the open valve. Analyses the operating problems of chilled water pump, cooling water pump and cooling tower, and puts forward the improvement measures.