井结构参数对同井回灌地下水源热泵的影响

井结构参数对同井回灌地下水源热泵的影响

袁建伟*^,a    王瑞祥^a    袁东立^b   

(^a北京建筑工程学院环境与能源工程学院，北京100044)
(^b中国建筑科学研究院空气调节所，北京100013)

摘要  同井回灌地下水源热泵抽水和回灌在含水层同一径向位置不同深度处同时发生，增加了热贯通的可能性，因此对其影响因素的分析尤为重要。本文建立了单一介质承压含水层中定流量同井回灌地下水源热泵夏季运行地下水换热数学模型，并模拟分析了含水层厚度、抽灌段滤管长度及其间距等井结构参数对同井回灌地下水源热泵地下水渗流和换热的影响。

关键词  地下水源热泵；同井回灌；井结构参数；抽水平均温度

Effect of well structure parameters on Water-source Heat Pump with Pumping and Injection in the Same Well

Yuan Jianwei^a    Wang Ruixiang^a    Yuan Dongli^b

(^aDept. of environment & Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044)
(^bInstitute of Air conditioning, China Academy of Building Research, Beijing 100013)

Abstract Pumping and injection of a groundwater heat pump with pumping and recharging in the same well (GWHPPRSW) occurs simultaneously at the same plane spot but at different depth of aquifer, which increases the probability of thermal breakthrough. So, it is highly important to analyze its factors. A model was established for groundwater heat transfer in a unitary homogenous confined aquifer by the operation of GWHPPRSW in summer with constant heat pump flow. Based on the model, a numerical simulation was done for the GWHPPRSW in condition of different thickness of the aquifer; the length of filters; the distance of the filters between the pumping section and the injection one.

Keywords water-source heat pump; pumping and injection in the same well; well structure parameters; pumping average temperature

0 引言

近年来，国内学者们提出了一种具有自主知识产权的新型地下水源热泵，该热泵生产井与回灌井集成在同一口井中。相对于传统的异井回灌地下水源热泵，该热泵被称为同井回灌地下水源热泵。该技术自2001年在北京某工程投入运行以来，其推广与应用速度很快，到2006年底已完成250多个项目，总建筑面积超过360万m^2[1]。图1为该新型地下水源热泵的示意图。

正文下载:

井结构参数对同井回灌地下水源热泵的影响.rar