混合地源热泵系统(HGSHPS)的研究

地源热泵(GSHP)是一种节能与环保型空调技术,近些年来发展迅速,且成为生态建筑能源研究领域的一个热点。然而对于以空调为主的地区及建筑物中的应用,GSHP存在着冬夏土壤埋管负荷不平衡的不利情形(夏季向土壤中的放热大于冬季取热),这会导致土壤温度逐年升高,热泵运行性能逐渐恶化。为此,提出了采用辅助散热装置的混合地源热泵系统的概念,以平衡全年埋管从土壤中的取(放)热量。本文在介绍HGSHPS工作原理、技术特点与研究现状的基础上,重点对其控制策略、设计方法及其优化进行了详细的阐述,并提出了一些发展的建议,最后展望了其在我国的应用前景。

Study on Hybrid Ground Source Heat Pump System

GSHP,as a energy conservation and enviromention protection air-conditioning technology,is developed rapidly these days,and become a focus in the research of ecological architecture energy utilization technology.However a bad situation of unbalanced ground load between winter and summer(heat released to ground exceed that absorbed from ground) can be caused,which will contribute to the increase of ground temperature increasingly and thus deteriorate operation performance of GSHP,for application in cooling-dominated district and building.The idea of Hybrid Ground Source Heat Pump System,which incorporates a supplemental heat rejecters to GSHPS,is presented for balancing the ground load between winter and summer.The principle? technology characteristic and research state of HGSHPS are introduced in this paper.The control strategies,design procedure and optimization design of it are analyzed in detail.Some development suggestions are brought forward,and the application prospect of it in our country is also pointed out.