Solar ground source heat pump heating and air conditioning system design method

Abstract

The invention discloses a solar ground source heat pump heat supply and air conditioning system design method, and belongs to the technical field of heat supply system design. The method comprises thefollowing steps: 1) selecting a reasonable air conditioner design scheme according to meteorological parameters of a construction area and construction building characteristics; 2) analyzing the heattransfer process of the underground buried pipe heat exchanger, selecting a proper heat pump unit according to the heat load, and determining the design scheme of the buried pipe; 3) calculating theheat which needs to be compensated for when the annual buried pipe heat exchanger reaches heat balance, and designing a solar heat collection system. Solar energy is adopted as an auxiliary heat source, so that the heat pump system can be designed according to summer working conditions, the solar heat collector bears a part of heat load, the initial cost of a ground source part is reduced, rich solar energy resources can be fully utilized, and the use cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of heat supply system design, and in particular relates to a design method of a solar ground source heat pump heat supply and air conditioning system. Background technique [0002] In northern China, the heat load of buildings in winter is relatively large, so the system design is mainly based on heat load. If the ground source heat pump is completely used for heating, the initial investment of the geothermal heat exchanger and the unit is relatively high, and the efficiency of continuous operation is also low. When running in summer, the capacity of the unit is too large, resulting in waste. Moreover, since these areas take more heat from the ground in winter than heat stored in the ground in summer, long-term operation will cause the temperature of the ground to drop, and the COP value of the heat pump system will also be relatively low. The system will not meet the design requirements, and the energy-sav...

AI Technical Summary

Problems solved by technology

If the ground source heat pump is completely used for heating, the initial investment of the geothermal heat exchanger and the unit is relatively high, and the efficiency of continuous operation is also low.

However, when running in summer, the capacity of the unit is too large, resulting in waste

Moreover, since these areas take more heat from the ground in winter than heat stored in the ground in summer, long-term operation will cause the temperature of the ground to drop, and the COP value of the heat pump system will also be relatively low. The system will not meet the design requirements, and the energy-saving effect of the heat pump will not be reflected.

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