Under the national strategy of"carbon peaking and carbon neutrality",the green energy-saving technology using geothermal resources for heating or cooling has developed rapidly.The research status of geothermal resources utilization in recent years was summarized.According to the internal and external diameter ratio and flow condition commonly used in engineering,the resistance along the 2 000 m vertical descent coaxial borehole was calculated by using the relevant theories of fluid mechanics,and the conclusion was obtained that the resistance characteristic of the coaxial borehole with the internal and external diameter ratio of 63 mm/160 mm is the best.
关键词
地热资源/同轴套管/管径配比/阻力特性
Key words
geothermal resources/coaxial borehole/internal and external diameter ratio/resistance characteristics
维普
万方数据