太阳能地源热泵联合供热水系统TRNSYS模拟与研究

发布时间：2018-11-27 19:20

【摘要】：地源热泵长期运行从土壤中取热,导致地埋管换热器附近土壤温度持续性降低,会降低系统运行效率直至系统崩溃。为解决这一问题,以天津地区某高校学生公寓供应生活热水工程为例,建立太阳能地源热泵联合供热水系统。利用TRNSYS软件搭建仿真模型,从系统换热量、性能系数、太阳能集热效率的数据结果证明系统的可行性;对系统中各用电设备的月总用电量、年用电量进行数值分析,验证系统的经济性;研究第一年每月和10 a内土壤平均温度和热不平衡率的变化情况,证明系统的可持续性和稳定性。仿真结果表明,通过将太阳能与地源热泵联合起来供应高校生活热水,可以有效解决地埋管附近土壤温度持续性降低的问题,验证了所建立系统的正确性及有效性。
[Abstract]:The ground source heat pump (GSHP) takes heat from the soil for a long time, which results in the continuous decrease of the soil temperature near the ground heat exchanger, which will reduce the system efficiency until the system collapses. In order to solve this problem, a solar ground-source heat pump combined hot water supply system was established with the example of a residential hot water supply project in a college apartment in Tianjin area. The simulation model is built by using TRNSYS software. The results of heat transfer, performance coefficient and solar energy collection efficiency prove the feasibility of the system. The total monthly electricity consumption and annual electricity consumption of each electric equipment in the system are analyzed numerically to verify the economy of the system. The variation of average soil temperature and thermal imbalance rate during the first year of the first year and 10 years were studied to prove the sustainability and stability of the system. The simulation results show that by combining solar energy with ground-source heat pump to supply hot water in colleges and universities, the problem of persistent decrease of soil temperature near the buried pipe can be effectively solved, and the correctness and effectiveness of the established system are verified.
【作者单位】：东南大学电气工程学院;国网天津市电力公司电力科学研究院;
【基金】：国家电网公司总部科技项目(SGTJDK00DWJS16-00014) 江苏省产学研前瞻项目(BY2016076-12)~~
【分类号】：TU822

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