The Ground Temperature Monitoring Method of Borehole Pipe Heat Exchangers

Abstract

Tandem distribution layer temperature measurementand digital transmission system improve the core technology of marine layer temperature sensor, overcome several shortcomingsof the traditional test such as multi-lead; difficult to debug; high cost; cannot real reflect the ground temperature,considering theaccuracy of temperature measurement, the stability of instrument,the feasibility of installation,price and other factors. And confirmed by experiment:the difference of measured temperature of layer is generally 0.05Ž`0.1Ž when placed inside or outside the heat exchange PE tube, both can reflect the real temperature variation of thelayer,put the measuringwire inside the tube is suggested in practical application which has more advantages. This ground temperature monitoring method has been applied in many heat exchange system,both accuracy and stability can meet the dynamic monitoring requirement of ground temperature in buried pipe group area when develop the shallow geothermal energy.