Ground source heat pump integrated with phase change energy storage module and heating system

Abstract

The invention relates to a ground source heat pump integrated with a phase change energy storage module and a heating system. The ground source heat pump comprises a unit body, an evaporator, an expansion valve, a compressor and a phase change condenser, wherein the evaporator, the expansion valve, the compressor and the phase change condenser are arranged in the unit body, and the phase change condenser comprises a condenser body, two heat exchange coils arranged in the condenser body and a phase change material filled in the condenser body. A traditional ground source heat pump device and the phase change energy storage module are integrated, a part of building load is borne, and therefore the peak load of the system is reduced, the host capacity of the system is reduced, the number of buried pipes is reduced, and the one-time investment cost is reduced; meanwhile, the phase change material is added into the condenser body, the phase change process of the phase change material is fully utilized, the sensitivity of the unit to the indoor tail end load change is reduced, the time for the return water temperature to reach the unit operation stopping temperature is prolonged, the start-stop period of the unit is prolonged, the start-stop frequency of the unit is reduced, and long-term stable operation of the unit is facilitated.

Description

technical field [0001] The invention relates to the fields of heat pump system energy supply and renewable energy utilization, in particular to a ground source heat pump and a heating system integrating a phase change energy storage module. Background technique [0002] The construction industry is one of the three major areas of energy consumption and one of the main responsible areas for direct and indirect carbon emissions. In order to achieve the goal of carbon peaking in 2030 and carbon neutrality in 2060, it is necessary to realize energy transformation, transforming carbon-based energy based on fossil energy into zero-carbon energy based on renewable energy. The characteristic of the zero-carbon energy structure is to provide energy for buildings through the conversion of electrical energy. Therefore, heat pumps will become the best way to achieve efficient power transfer to heat. For application scenarios such as large public buildings, ground source heat pumps have...

AI Technical Summary

Problems solved by technology

[0003] In recent years, although the ground source heat pump system has been more and more widely used in our country, due to the limitations of its own technical characteristics, as well as the limitations of geological and climatic conditions, long-term unreasonable operation will lead to imbalance of soil temperature, frequent start and stop of the unit etc., which is not conducive to the long-term stable operation of the unit

In addition, due to the large volume of ground source heat pumps, the peak load during the day is relatively large, which will further increase the burden on the power grid

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