Research On Ground-source Heat Pump Parameters Optimization Of Ground Source Heat Pump Central Air Conditioning System In Tianjin Port

Ground-source heat pump technology has received widespread attention in recent years.Ground-source heat pumps can transfer heat stored in the soil to buildings during the winter and send heat out of buildings during the summer.Ground source heat pump can reduce the greenhouse effect because it can reduce the consumption of primary energy,and the ground source heat pump technology has higher efficiency than the traditional technology.Therefore,the ground source heat pump air conditioning system has received more and more attention,and the energy is increasingly stressed.Today,it is of great significance to conduct research and analysis on the key technologies of ground source heat pump.This article analyzes and researches the situation of the Eurasia international ground source heat pump system equipment of Tianjin Port and analyzes the Euro-Asia international ground source heat pump system of Tianjin Port.The main tasks are as follows:(1)The system parameters that affect the energy efficiency parameters of the ground source heat pump system were collected,and the operation characteristics of the Eurasian international ground source heat pump system were sorted out,and the energy efficiency parameters of the system were initially obtained.(2)Using ASPEN software to simulate a group of heat pumps,it was found that the value of energy efficiency factor increases with the increase of the flow rate,and the thermodynamic state of the heat transfer medium of the circulatory system is within a reasonable range.By analyzing the target heat pump system operating data and analyzing the operating efficiency and energy consumption of the integrated service building Ruo Ren heat pump system,it is known that the heat pump host is often in a low load state,and a dedicated air conditioning system controller is installed in the heat pump control system through analysis..According to the load side situation,the two sets of units are set to automatically switch on and off.Finally,under the condition of ensuring the normal operation of the unit,the energy consumption of the unit is reduced.(3)The influence of different inlet velocity of U-tube heat transfer medium on ground heat transfer performance of ground source heat pump is calculated by using CFX conjugate coupled heat transfer model.The analysis shows that by appropriately increasing the inlet velocity,although the temperature difference at the inlet and outlet of the temperature U-tube is reduced,the U-tube heat transfer is increased.At the same time,the influence of different thermal conductivity of backfill materials on the distribution of underground U-tube underground temperature field of the target ground source heat pump system is explored.The analysis shows that for the thermal conductivity of different backfill materials,the U-tube model used has different distribution of underground temperature field,but no obvious thermal short circuit phenomenon has occurred.By analyzing and adopting appropriate means to change the thermal physical properties such as thermal conductivity of the backfill material,the effect of U-tube underground heat transfer can be significantly improved.The ground-source heat pump operation results of the ground-source heat pump central air-conditioning system in Tianjin Port show that the analysis results obtained in this paper are reliable.