ORC发电系统在干热岩试验性发电中的应用

Application of ORC Power Generation System in Hot Dry Rock Pilot Power Generation

目前国内外对干热岩的开发利用研究主要是为了实现发电及梯级综合利用,但都未实现规模化,国内仅河北省唐山市马头营干热岩项目完成了试验性发电。为了推进我国干热岩地热资源开发利用,通过综合分析及建立ORC工质综合性能评价模型等方法,以该干热岩项目试验性发电系统为例,对干热岩地热资源的开发利用进行了发电系统和工质的综合选型,选择了有利于干热岩项目的ORC发电系统及环保工质R245fa。ORC发电系统在该项目的发电试验中实现了我国第一次干热岩试验性发电,表现了良好的热力学性能,为以后同类型干热岩地热资源开发利用与技术研究提供了经验。

Researches on hot dry rock exploitation and utilization both in home and abroad at present are mainly for power generation realization and cascade integrated utilization.However,all the purposes are not achieved broad in scale so far,only the Matouying hot dry rock project has been fulfilled pilot power generation in Tangshan City,Hebei Province.To push on hot dry rock geothermal resources exploitation and utilization in China,through integrated analysis and ORC working substance comprehensive performance assessment modeling etc methods,taking the hot dry rock project pilot power generation system as an example has carried out power generation system and working substance comprehensive type selection,finally the propitious to hot dry rock project ORC power generation system and environmentally safe working substance R245fa have been selected.ORC power generation system has been realized the first hot dry rock pilot power generation in China,and demonstrated favorable thermodynamic property,thus provided experiences for subsequent same type hot dry rock geothermal resources exploitation,utilization and technological studies.