This study implemented the performance assessment and techno-economic optimization of residential ground source heat pump (GSHP). First, a detailed numerical model integrating the ground heat exchanger and heat pump and economic model considering economic indicators were developed to analyze the thermal and economic efficiency of residential GSHP. Then, Taguchi method was proposed to investigate the impacts of five parameters on the thermal and economic performance of GSHP and obtain the optimal parameters set. After that, the sensitivity of optimal parameter to the drilling costs, pipe prices, and interest rate were performed. Lastly, the analysis of variance approach was implemented to find out the relative significance of parameters. Results revealing that the superiority of individual GSHP can be maintained in the vast majority of time and the capital investments are relatively high within the range of 13034.4 to 18199.2 CNY. The optimal parameters combination was of great discrepancies when taking the economic indicators into account. The most economical choice of pipe size remains unchanged, despite the optimization objectives and varying pipe prices. The relative importance of fluid velocity, borehole depth, and pipe material towards the variation of economic efficiency largely depends on the drilling costs, pipe prices, and the interest rate.

这项研究实施了住宅地面源热泵（GSHP）的性能评估和技术经济优化。首先，建立了一个将地面换热器和热泵相结合的详细数值模型和考虑经济指标的经济模型，以分析住宅GSHP的热经济效率。然后，提出了Taguchi方法，研究了五个参数对GSHP热经济性能的影响，并获得了最佳参数集。之后，进行了最优参数对钻井成本，管道价格和利率的敏感性分析。最后，采用方差分析法找出参数的相对重要性。结果表明，单个地源热泵的优势可以在绝大多数时间内得以保持，并且在13034.4至18199.2元人民币的范围内，资金投入相对较高。在考虑经济指标时，最佳参数组合存在很大差异。尽管有优化目标和变化的管道价格，但最经济的管道尺寸选择保持不变。流体速度，钻孔深度和管道材料对经济效率变化的相对重要性在很大程度上取决于钻井成本，管道价格和利率。尽管有优化目标和变化的管道价格，但最经济的管道尺寸选择保持不变。流体速度，钻孔深度和管道材料对经济效率变化的相对重要性在很大程度上取决于钻井成本，管道价格和利率。尽管有优化目标和变化的管道价格，但最经济的管道尺寸选择保持不变。流体速度，钻孔深度和管道材料对经济效率变化的相对重要性在很大程度上取决于钻井成本，管道价格和利率。