Optimization Research And Suitability Evaluation Of Ground Source Heat Pump Air Conditioning System

With the rapid development and progress of the society, energy shortage andenvironmental degradation have become increasingly prominent issues, the societypay more attention to the exploitation and utilization of new energy, as well as theways and means of energy conservation and emission reduction. Ground-source heatpump system(GSHP) as a green air conditioning technology with energy saving,recycling renewable characteristics has become the most popular research andapplication project.In this paper, five cities were selected as the representative of the fivearchitecture climate region in our country, and a typical office building was selectedas the research object. According to the envelope’s thermal design requirements invarious regions, the cold and heat load dynamic simulation for the buildings in fivedifferent climatic zones was performed, and analyzed for soil thermal imbalance.The area which was not suitable for a single type GSHP was optimized by auxiliaryenergy.With the three-dimensional unsteady heat transfer model of underground pipesgroup, Wuhan city was selected as the simulation objects. The temperature fieldaround group pipes was simulated in a quasi-cycle, though the analysis of soil’stemperature field variation and recovery condition, the reliability of the optimizationmethod was verified.Based on the evaluation object, the evaluation index and the index weight,evaluation system was established by the gray correlation analysis method. Theground-source heat pump system’s suitability in different regions were analyzed bythe multi-attribute comprehensive evaluation.