Research On Ground-source Heat Pump Combined With Ice Storage Air-conditioning Test System

With the development of national economy, the problem of energy pinch isbecoming more and more serious, which brings new requirements for the buildingair-conditioning system. Ground-source heat pump combined with ice storageair-conditioning system has aroused wide concern, for its advantages of energysaving and peak load shifting.This thesis studied on the ground-source heat pump combined with ice storageair-conditioning system, a measurement control system with the outlet air volumecontrol function was designed based on PLC, and a System operation statemonitoring program was developed on the basis of LabVIEW8.6. Using the presentsystem, the average temperature of the underground soil and the heat exchange ofunit pipe were measured in the underground soil thermal response experiment, witchprovided reference for the design of the ground source heat pump buried tube heatexchanger in Hangzhou area. The following are the main work content:(1) The fundamental of ground source heat pump and ice storage technologywere summarized, as well as the present development at home and abroad. Researchcontents and methods of this work were presented.(2) Taking PLC technology as core, a measurement control system wasdesigned, which achieved the control of the host operation and the informationcollection of flow, temperature, pressure, the liquid level.(3) Based on ground heat exchanger, a thermal response test system wasdesigned. Using the present system, soil heat response experiment was performed,the measured underground soil average temperature was17.0℃, the heat exchangeof unit pipe were measured in three flow rate.