复合式地源热泵系统运行策略讨论华中科技大学建筑环境与设备工程系 宋光前徐新华 吴丹 [摘要]本文提出复合式地源热泵系统的顺序控制法与湿球温度控制法,建立了基于TRNSYS 的复合式地源热泵系统与其控制系统模拟平台。以郑州某建筑复合式地源热泵系统为讨论对象,并对该系统在不同运行控制下的运行与能耗进行动态模拟。模拟结果表明对于该地源热泵系统,采纳湿球温度控制法并选定合适的湿球温度能保持土壤的热平衡性并且减少系统能耗。[关键词]:复合式地源热泵系统 湿球温度控制法 热平衡 动态模拟Control Strategy Study of Hybrid Ground-Source Heat Pump SystemSong Guang-qian Xu Xin-hua Wu Dan(Department of Building Environment and Services Engineering, HuazhongUniversity of Science and Technology, Wuhan 430074, ChinaE-mail: bexhxu @ hust .edu. cn )Abstract This paper presents a sequence operation control strategy and a wet-bulb temperature-based control strategy for a hybrid ground-source heat pump system. A simulation platform is also developed for this heat pump system and its control system based on TRNSYS. The operation and energy consumption were dynamically simulated. The results show that ground heat balance can be kept well for this system and when the wet-bulb temperature-based control strategy with proper wet-bulb temperature set-point is used for this system.KeywordsHybrid ground-source heat pump system, Wet-bulb temperature-based control strategy, Heat balance, Dynamic simulation0 引言地源热泵系统(GSHP)因其全年高效性与环境的友好性[1-3],正逐渐受到用户的喜爱。对于那些冷负荷大于热负荷的建筑来说,地源热泵系统需要辅以其他的排热装置配合使用。在复合式地源热泵系统中,地埋管换热器(GHE)与辅助排热装置的连接方式既可以是串联连接又可以是并联连接,图 1(a)为并联的连接方式。串联方式即是热泵冷凝器出水经板式换热器换热后再经地埋管继续换热,最后回到热泵冷凝器,行成一个冷却水换热循环。在维持土壤热平衡条件下,出现了很多旨在猎取更高效率从而达到节能效果的复合式地源热泵系统控制策略。许...