中深层地埋管换热器性能研究——基于某体育训练基地场馆供暖工况  

Performance of middle-deep buried pipe heat exchanger--Based on heating conditions of a sports training base venue

作　　者：张华梁 高培 张晓晶 张文超 Zhang Hualiang;Gao Pei;Zhang Xiaojing;Zhang Wenchao(Shandong Provincial Sports Training Center;Shandong Provincial Housing and Urban-Rural Development Research Institute;Jinan Branch of Wanda Commercial Management Group Co.,Ltd.)

机构地区：[1]山东省体育训练中心 [2]山东省住房和城乡建设发展研究院 [3]万达商业管理集团有限公司济南分公司

出　　处：《制冷与空调》2024年第8期75-81,88,共8页Refrigeration and Air-Conditioning

摘　　要：为研究同轴式地埋管换热器和U形地埋管换热器这2种中深层地埋管换热器换热性能,利用Fluent结合某体育训练基地场馆实际情况建立数值模型。模拟研究10年运行时间内,间歇运行模式、岩土导热系数和地温梯度等因素对这2种地埋管换热器换热量的影响。结果表明:前5年这2种地埋管换热器换热能力衰减较大,均下降6.6%左右,随后逐渐平稳;岩土物性参数一致时,2种换热器10年内换热能力衰减相差不大。4种间歇运行工况下,U形地埋管换热器换热性能均略优于同轴式地埋管换热器;在高岩土导热系数和高地温梯度时,运行10年后U形地埋管换热器换热性能优于同轴式地埋管换热器。In order to study the heat transfer performance of coaxial and U-type buried pipe heat exchangers in middle-deep layers,a numerical model is established using Fluent based on the actual conditions of a sports training base venue.The effects of intermittent operation mode,rock-soil thermal conductivity and geothermal gradient on the heat transfer capacity of these two types of buried pipe heat exchangers are simulated for a 10-year operating period.The results show that the heat transfer capacities of both types of heat exchangers decline significantly in the first five years,with a decrease of about 6.6%,and then gradually stabilize.When the rock-soil physical parameters are consistent,the heat transfer capacities of the two heat exchangers show little difference in ten years.Under four kinds of intermittent operating conditions,the heat transfer performance of U-type buried pipe heat exchanger behaves slightly better than the coaxial buried pipe heat exchanger.Under conditions of high rock-soil thermal conductivity and high geothermal gradient,the heat transfer performance of U-type buried pipe heat exchanger is greater than that of coaxial buried pipe heat exchanger after ten years of operation.

关 键 词：地源热泵 地埋管换热器 同轴式 U形 换热量 

分 类 号：TQ0[化学工程]