Design Optimization Of Ground-coupled Heat Pump System

Firstly, constructs the mathematical model, which includes the water-water heatpump, circulating pump and ground heat exchanger in this paper, and uses the Matlab toprogram the infinitely variable control module. Builds the ground-source heat pumpsystem in the simulation platform software so that it can simulate the water-water heatpump system for the inverter case.Then, uses DeST to calculate the load of an officebuilding, and makes initial design to ground-source heat pump system. Runs thecondition that a different number of holes under the dynamic energy simulation by usingthe simulation platform, and gets the optimal drilling number of the system. In addition,uses Ansys software to establish drilling model to simulate the situation that differenttypes of ground, same tube fluid temperature. At last, uses the radius of heat transfer tocalculate the heat transfer rate of single hole, and then gets the initial designed drillnumber with four cases of ground-source heat pump system. As a result, the greater theground thermal conductivity, the smaller the dynamic annual cost.Uses Trnsys to establish the ground-source heat pump system simulation platformto achieve conversion which has significance for the design of ground-source heat pumpsystem. Regards the dynamic annual costs as the economic evaluation indicator of asystem, and makes optimal design of different soil conditions which may give somereferences for popularizing and applicating ground-source heat pump system.