GSHP 机组数学建模及仿真应用

In order to realize the establishment of a ground source heat pump (GSHP) system simulation platform, based on the mechanism knowledge and sample data of the GSHP unit, a multivariate nonlinear regression method is used to establish a semi-empirical mathematical model of the GSHP unit, develop the GSHP unit simulation module Type223, and verify the accuracy of the module through simulation analysis. The TRNSYS (Transient System Simulation Program) simulation platform of the GSHP system is built using the Type223 module, and the operating characteristics of the variable flow rate on the ground source side of the ground source heat pump system under frequency conversion control are studied. The results show that: compared with the constant flow rate system, the operating energy consumption of the GSHP unit in the variable flow rate system increases, but the operating energy consumption of the circulation pump on the ground source side is significantly reduced, and the energy saving rate of the total energy consumption on the ground source side during the entire cooling period can reach 7.99%.

为实现地源热泵（Ground source heat pump,GSHP）系统仿真平台的建立,基于GSHP机组的机理知识和样本数据采用多元非线性回归方法,建立GSHP机组半经验数学模型,开发GSHP机组仿真模块Type223,并通过仿真分析,验证了模块的准确性。利用Type223模块搭建了GSHP系统TRNSYS（Transient System Simulation Program）仿真平台,研究了变频控制下地源热泵系统地源侧变流量的运行特性。结果显示:相对于定流量系统,变流量系统的GSHP机组运行能耗有所增加,但地源侧循环泵的运行能耗大幅度降低,整个制冷期地源侧总能耗的节能率可达7.99%