Resistance Characteristics of Coaxial Borehole for Geothermal Applications with Different Ratios of Internal and External Diameters
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.
geothermal resourcescoaxial boreholeinternal and external diameter ratioresistance characteristics
万方数据
维普
