基于临界渗透速度分布特性的地下水源热泵变流量运行研究

Analysis on groundwater source heat pump operation under variable flow based on distribution characteristic of critical seepage velocity

基于临界渗透速度分布特性,对比分析研究地下水源热泵采用定流量和变流量运行方式对含水层参数变化特性的影响。通过案例研究分析空调负荷特性与临界渗透速度分布特性对地下水源热泵不同运行方式的影响。研究结果表明:与地下水源热泵采用定流量运行方式相比,采用变流量运行方式对含水层参数的影响较小,是一种可靠性较高的运行方式。如果考虑临界渗透速度分布特性的影响,采用变流量运行方式可靠性优势更为显著。

Based on the distribution characteristics of critical seepage velocity, the analysis on variation characteristics of aquifer parameters, induced by groundwater source heat pump （GWSHP） operation at constant flow and variable flow respectively, was carried out. A case study, which considered the characteristics of building air conditioning load and the distribution characteristics of critical seepage velocity, was analyzed theoretically. The result compared with the constant flow operation, indicates that the influence on the variations of aquifer parameters at variable flow operation is smaller. The reliability of the variable flow operation is superior to constant flow. If the distribution characteristics of critical seepage velocity is considered, the advantage of variable flow operation is more significant.