Study on the effect of sand-clay layer proportion on heat tranfer performance of double U-shaped buried tube heat exchanger
李磊, 徐拴海, 张卫东, 赵永哲, 汪启龙, 党东生, 沈浩
Coal Engineering . 2023, (4): 173 -179 .  DOI: 10.11799/ce202304032