【摘要】 通过对我国第一台地热井下换热器的实验研究，验证了作者提出的理论模型，并首次得到当地实验井混合比的实际数据。通过对当地疗养院病房的供热，证明该装置实用可靠。更多还原

【Abstract】 An experiment study on the a practical geothermal downhole heat exchanger,which is the first one developed in China,was conducted.It is proven that good agreement between experiment and calculation based on the theoretical model.From the experiment the proctical mixing ratio was obtained.This installation successfully operates in a sanatorium,Hebei Province.更多还原