地埋管地源热泵岩土热响应试验准确性影响因素分析*
Influence factor analysis of geotechnical thermal response test accuracy for ground-coupled heat pumps
摘要：
建立了岩土热响应试验动态仿真模型，通过试验验证了模型的准确性。基于线热源模型数据处理方法，量化分析了不同影响因素对模拟结果准确性的影响规律。结果表明：为保证测试结果的准确性，试验持续时间不应短于72 h；测试前期数据删除不应少于12 h的数据；管内应维持旺盛湍流；应尽量提高加热功率的稳定性，否则应采用其他的数据处理方法。
Abstract：
Establishes a dynamic simulation model of geotechnical thermal response test, and verifies the accuracy of the model by experiments. Based on the data processing method of linear heat source model, analyses quantitatively the influence rules of different influence factors on the accuracy of the simulation results. The results show that, in order to ensure the accuracy of the test results, the test continues 72 hours at least, the deletion length of data in the early stage of the test is more than 12 hours, the strong turbulent flow is maintained in the pipe, and the stability of heating power shall be improved as much as possible, otherwise other data processing methods ought to be adopted.
Keywords:ground heat exchanger, geotechnical thermal response test, accuracy analysis, linear heat source model, simulation calculation