Applied Research: Heat Network Distributed Frequency Conversion Pump Technology

The 16th National Conference on HVAC Refrigeration was held in Chongqing International Convention and Exhibition Center from November 4 to November 7, 2008. On the morning of November 5, Qin Xuzhong, Tsinghua Tongfang made a keynote speech on "Applied Research on Distributed Heat Pump Technology of Heat Network". Tsinghua Tongfang Qin Xuzhong keynote speech Abstract: For a system using only one network of the total circulating pump, as the capital of the near-end thermal station pressure head is too large, need to throttle through the valve, the total circulating pump provides a lot of energy is wasted. If the pipe network to choose the right location, and in the back of the rear heat users at each end of the return pipe to add a secondary pump (booster pump) for the system end-user heating needs, you can make a circulating pump head Reduce about half of the valve; reduce the closure of the valve loss, the heating grid for energy consumption by greatly reducing the consumption, at the same time, if the distributed frequency conversion technology used in the heat exchanger station, you can also use two circulating pump frequency to adjust the secondary water Of the water temperature. Distributed variable frequency pump technology is particularly applicable to the end of the city pipe network capacity expansion, the application of the heat network should be computer control, to solve the variable flow pump control problems.

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