北京某同井回灌地下水地源热泵工程现场试验研究
Field test of a groundwater source heat pump project with pumping and recharging in the same well in Beijing
摘要：
比较了抽灌同井与单井循环系统的异同点。给出了北京某同井回灌地下水地源热泵工程近一年的现场试验数据，包括进出口水温、地下水流量、测井温度。研究表明，地下水流量的选取是同井回灌地下水地源热泵节能的关键。将热贯通分为瞬变热贯通和缓变热贯通,抽灌同井运行过程中的缓变热贯通不明显，应注意瞬变热贯通。对于冬夏均运行的抽灌同井，季节性蓄能是热泵热源的重要组成部分。
Abstract：
Compares the pumping and recharging well (PRW) with the standing column well (SCW). Presents the field test data around a year of a groundwater source heat pump with pumping and recharging in the same well (GSHPPRSW) project in Beijing, including the inlet and outlet groundwater temperature, groundwater flow rate and temperature of observation wells. The research indicates that the determination of groundwater flow rate is the key to energy saving of GSHPPRSW. Delimits slow-response heat breakthrough and fast-response heat breakthrough and states that the slow-response heat breakthrough is not notable in the operation of GSHPPRSW and attentions should be paid to the fast-response heat breakthrough. For the full-year-operation PRW, seasonal thermal energy storage plays an important role in the heat source of the heat pump.
Keywords:groundwater source heat pump, pumping and recharging in the same well, standing column well, heat breakthrough, seasonal thermal energy storage