| 河北沧县台拱带中、低温地热资源ORC发电与综合梯级利用 |
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| 关键词:medium-temperature geothermal resources geothermal power generation ORC geothermal cascade utilization |
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| ORC Power Generation and Integrated Cascade Utilization of Medium-low Temperature Geothermal Resources in Cangxian Bulge Region, Hebei Province |
| The geotectonic position of Beijing–Tianjin–Hebei Region research base (Xianxian county) is Xianxian county fault arch, formerly Cangxian County uplift, in North China Plain. The research base has studied medium-low temperature geothermal power generation and integrated cascade utilization by using the thermal water in Jxz karst fissures geothermal reservoir. The capacity of the geothermal power generation is 280 kW, ORC centripetal turbine technology is used, and the system working fluid is R245fa. Two test runs were carried out on February 4–6 (in winter) and March 6–16 (in spring) of 2018. The cumulative power generation time was 274 hours, the cumulative power generation was 36 956 kWh, and the average power generation efficiency was 9.1%, with a maximum of 10.4%. The power generation efficiency is higher than that of China's existing low-temperature geothermal power generation projects, and is also at a relatively high level in the current international projects. The generator set worked well and stably during the test run. The geothermal generator operated better in winter than in spring. After the construction of the scientific research base, three levels of utilization of power generation, heating and geothermal ecological parks will be carried out. According to the thermal energy potential of geothermal water at 90~95/25 °C, the comprehensive utilization rate of the two-stage uti-lization of integrated power generation and heating will achieve 70%~76%. |
| QIN Xiang-xi,ZHANG Meng,YE Jia,LIU Hong-mei,WANG Gui-ling,SHI Jian-sheng.2019.ORC Power Generation and Integrated Cascade Utilization of Medium-low Temperature Geothermal Resources in Cangxian Bulge Region, Hebei Province[J].Acta Geoscientica Sinica,40(2):307-313. |
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