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Session: Session 3C: Experimental prototypes (2)
Session starts: Monday 09 September, 16:00
Presentation starts: 16:40
Room: Templar's

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kang Chen (School of Energy and Power Engineering, Xi'an Jiaotong University)
Yang Du (School of Energy and Power Engineering, Xi'an Jiaotong University)
Yi Yang (School of Energy and Power Engineering, Xi'an Jiaotong University)
Yiping Dai (Institute of Turbomachinery, School of Energy and Power Engineering, Xi'an Jiaotong University)
Jiangfeng Wang (School of Energy and Power Engineering, Xi'an Jiaotong University)
Pan Zhao (School of Energy and Power Engineering, Xi'an Jiaotong University)

Abstract:
High water-cut oil wells are weak in exploitation of crude oil but cost a lot for maintenance, an appropriate way to deal with this problem is making full use of the waste heat from the oilfield associated water. A comprehensive geothermal system was proposed to the cascade utilization of the geothermal water from the oil well, and it consisted of a power generation system based on organic Rankine cycle (ORC), a gathering heat tracing system, an absorption refrigeration system for house cooling, and a house heating system. Exergy and sensitivity analysis about the ambient temperature were conducted to evaluate the thermal performance of the comprehensive system, and heat consumption equivalent was applied to assess its economic performance. Results showed that the best evaporating pressure of ORC subsystem was 650kPa, and the overall system could work with a exergy efficiency higher than 42.5% the whole year. Moreover, nearly 8916 tons of kgce could be saved every year. The work done may provide some guidance for researchers in the usage of the geothermal water based on high-cut oil wells.