摘要
以利用废弃油井进行地热发电为研究对象,通过数值模拟的方法,主要研究混合工质相对于单一工质在地热发电上的优势,以及隔热层的厚度和热导率对地热发电的影响。研究结果表明:混合工质HFC437a的发电效率高于单一工质HFC134a在1.2%,隔热层热导率的增加会降低工质的出口温度以及发电量,同时在流量一定的情况下,隔热层厚度的增加则会提高地热发电的效率。
Taking the geothermal power generation using abandoned oil well as the research object, through the numerical simulation method, the advantage of the mixed working fluid relative to single working fluid in geothermal power generation, and the effect the thickness of thermal insulation layer and heat conductivity on geothermal power generation were mainly researched. The research results show that the power generation efficiency of mixed working fluids HFC437a is 1.2% higher than the single working fluids HFC134a, and increase of heat conductivity of thermal insulation layer will decrease the outlet temperature of working fluids and power generation quantity, and increasing the thickness of thermal insulation layer will increase the efficiency of geothermal power generation under the same flow rate.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2017年第8期2286-2291,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51176182)
关键词
地热发电
废弃油井
混合工质
传热分析
隔热层
geothermal power generation
abandoned oil well
mixed working fluids
heat transfer analysis
thermal insulation layer
