摘要
建立一个新的描述“Ｕ”型管式地热井下换热器的导热模型．分析地下岩层的温度分布、井下换热器进口水温及流量变化对井下换热器热输出的影响。
A theoretical model describing U shaped downhole heat exchanger (DHE) performance is presented in this paper. The initial matrix temperature profile where DHE is located consists of two parts: the conduction dominated part at the upper section and the convective dominated part at the lower section along a geothermal well, respectively. This paper also presents a calculating example which illustrates the effects of geometrical parameters of DHE, the physical properties and temperature distribution around the well on heat output.
出处
《天津大学学报》
EI
CAS
CSCD
1996年第4期563-568,共6页
Journal of Tianjin University(Science and Technology)
关键词
地热
井下换热器
温度梯度
导热
U型管式
geothermal, downhole heat exchanger, temperature gradient, heat conduction
