A high-efficient centrifugal heat pump with industrial waste heat recovery for district heating
A high-efficient centrifugal heat pump with industrial waste heat recovery for district heating
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DOI：
10.1016/j.applthermaleng.2017.07.030
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发表时间：
2017-10
影响因子：
6.4
通讯作者：
Bin Hu;Hua Liu;Ruzhu Wang;L. Hongbo;Zhiping Zhang;W. Sheng
中科院分区：
文献类型：
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作者：
Bin Hu;Hua Liu;Ruzhu Wang;L. Hongbo;Zhiping Zhang;W. Sheng
近年来，中国北方地区的城市建筑面积和供暖能耗大幅增加。与此同时，在大多数工厂中，大量低品位的工业废热直接排放到环境中。为满足区域供热需求，同时回收工业余热，采用高效离心热泵进行区域供热和余热回收。研制了一种永磁同步变频离心热泵，与传统热泵相比，它具有更高的COP。在某工业余热回收区域供热项目中，试验结果表明，500RT PSF离心热泵的COP可达7.1，该区域供热系统的总COP可达4.8。一个采暖季的运行费用仅为燃气锅炉供暖系统的40.3%。与燃煤锅炉和燃气锅炉供暖系统相比，二氧化碳排放量分别减少60.6%和56.3%。由此可见，利用PSF离心热泵回收低品位工业余热进行区域供热在中国北方城市具有较大的吸引力。
The urban construction area and heating energy consumption in northern China have been increasing greatly in recent years. At the same time, a large amount of low-grade industrial waste heat is released directly to the environment in most industrial plants. To meet the district heating demands and recover the industrial waste heat simultaneously, high-efficiency centrifugal heat pumps are applied for district heating and heat recovery. A permanent-magnetic synchronous frequency-convertible (PSF) centrifugal heat pump is developed which has a much higher COP in comparison with that of conventional heat pumps. In a district heating project with waste heat recovery from industry, testing results have shown that COP of a 500RT PSF centrifugal heat pump could reach 7.1, and the total system COP of the district heating system reaches 4.8. The operating cost for one heating season is just 40.3% of gas-fired boiler heating system. The emission of Carbon Dioxide is reduced by 60.6% and 56.3% when compared with coal-fired boiler and gas-fired boiler heating system, respectively. This shows that application of PSF centrifugal heat pumps to recover the low-grade industrial waste heat for district heating are quite attractive in the north of China cities.