地源热泵供热水-空调冷热联供综合系统的实验研究

介绍了作者自主设计实施的地源热泵热水-空调冷热联供系统,运用单因素方法,研究地埋管总深度、地埋管及空调的循环介质流量等对热泵系统运行特性的影响,提出土壤源制热水和冷热联供两种工况下的合理运行方式。研究结果表明土壤源制热水间歇运行时既满足生活热水需求,又避免土壤源长期过度取热;夏季采用空调冷凝热为建筑制冷的同时制取生活热水,机组综合能效比达1:7以上,使热水系统全年运行成本大大降低。

Study on Running Features of Heating-cooling Combined Ground Source Heat Pump System

Hot-water and air-conditioning combined ground source heat pump system self-designed and actualized was describes.The study on two running features of hot water-supply from ground source and heating-cooling combined system was carried out.With the single factor method,influences of well depth and cooling-water flow of buried pipe and water flow of air-conditioning on two running features of hot water-supply from ground source and heating-cooling combined system are studied.The reasonable running modes are suggested.The test result indicates that hot water-supply from ground source running in the intermittent movement can need demand for hot water and avoid long-term excess thermal discharge,so that system keep operating in high efficiency.When buildings obtain refrigeration and hot water with air-conditioning condenser heat,integrated energy efficiency rate with heat pump unit exceeds the ratio of one to seven,so that operation costs of heating water system is greatly reduced all year.