太阳能-地源热泵与热网互补供热系统运行特性  

Running Characteristics of the Complementary Heating System with Solar Energy-Ground Source Heat Pump and Heating Network

作　　者：郝红[1] 薛翔远 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2014年第6期1068-1076,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家十二五科技支撑计划项目(2011BAJ05B02)

摘　　要：目的为缓解能源危机、综合利用能源、提高能源利用效率,研究太阳能-地源热泵与热网互补供热系统在严寒地区的运行特性.方法建立两种模式的太阳能-地源热泵与热网互补供热系统:模式一为循环流体先进入蓄热水箱;模式二为循环流体先进入地下埋管换热器,并对系统的运行特性进行对比.以TRNSYS瞬时模拟软件为平台,建立互补供热系统仿真模型,对整个供暖期系统的动态性能进行分析.结果模式一的水箱总蓄热量为134 858 k Wh大于模式二的132 296 k Wh;模式二热泵机组的性能系数(COP)为4.06大于模式一的4.04,模式二的地埋管总换热量为201 149 k W大于模式一的198 571 k Wh.结论热网补热时间集中在12月中旬到次年的2月中旬,而在供暖初期和末期补热需求较少.当以太阳能为主要热源时,可以考虑采用模式一,以确保集热器的高效率,提高集热器集热量;当以地源热泵为主要热源时,模式二可以合理利用太阳能,节省更多的电能.In order to relieve the energy crisis,comprehensive utilization of energy and improve energy efficiency,running characteristics of complementary heating system used solar energy-ground source heat pump and heating netw ork in cold region w ere studied. Based on the transient simulation softw are TRNSYS,tw o simulation models of this complementary heating system w ere built for comparison of system running characteristics. By the first model,the circulating fluid w as firstly flow ed into the heat storage w ater tank; by the second model,the circulating fluid w as firstlyflow ed into the underground buried pipe heat exchanger. Simulation results show that the total heat storage in the w ater tank by the first model is 134 858 k Wh,w hich is more than the total heat storage（ 132 296 k Wh） by the second model. The heat pump unit coefficient of performance（ COP） by the second model is 4. 06,it is more than the COP value（ 4. 04） by the first model; the total heat transfer in the underground buried pipe by the second model is 201 149 k Wh,it is more than the heat transfer（ 198 571 k Wh） by the first model. It is concluded that the supply heat should be concentrated in the middle of December to the next year＇s mid-February,but at the beginning and the end of the heating time,the heating demand is less. If the solar energy is taken as a main of source,the first model should be adopted,in order to improve the collector heating and to ensure high efficiency. If the ground source heating is taken as a main of source,adopting the second model can effectively use solar energy for saving more electricity.

关 键 词：太阳能 地源热泵 热网 互补供热 系统运行特性 TRNSYS 

分 类 号：TU995.1[建筑科学—供热、供燃气、通风及空调工程]