Research Of Energy-Saving And Economic Operating Of The Water Circulating Pump

Power consumption of circulating pump is generally bigger, 10 percent of plant electrical consumption, so the energy-saving renovation to circulating pump is necessary. Firstly in the article the reason of the circulating pump's low efficiency in our country was analyzed, and a method was put forward to increase the efficiency. Then it studied the principle of circulating pump's economic operating. It counted out economic flow of the pump in the conditions such as different load and different inlet water temperature of recycled water to the ZHUN-NENG company 150MW unit. It selected the speed governing programme after the technological and economic operation. It determined economic method of operation in different inlet water temperature and different load. It will help to direct the circulating pump's economic operating.