Ground source heat pump coupling system based on photovoltaic photo-thermal effects

Abstract

The invention discloses a ground source heat pump coupling system based on photovoltaic photo-thermal effects. The ground source heat pump coupling system comprises a grid-connected photovoltaic power generation system, a solar photo-thermal system and a ground source heat pump system. On one hand, a PV/T heat collector 1 converts solar energy into electric energy, the electric energy is supplied to a machine room water pump and a ground source heat pump unit through a photovoltaic controller 2, an inverter 4 and an alternating-current power distribution cabinet 5, electricity can be stored in a storage battery 3 or sold in a public power grid when the electricity is rich, and the electricity can be supplemented by the storage battery 3 and the public power grid when the electricity is insufficient; and on the other hand, after the heat converted by the PV/T heat collector 1 is transmitted to a heat storage water tank 6, the heat is used for supplying hot water through a first heat exchanger 7, when the heat is rich, the heat can be stored in an underground heat storage pipe 15 through a second heat exchanger 16 and used for heating of the ground source heat pump in winter, and when the heat is insufficient, the ground source heat pump can supplement the heat. Compared with a traditional water chilling unit, coal power generation and other modes, the operation cost is reduced, and economic benefits are remarkable, energy consumption and CO<2> emission are reduced, and the national policies of peak carbon dioxide emissions and carbon neutrality are actively responded.

Description

technical field [0001] The invention belongs to the field of photovoltaic / heat and heat pump, and in particular relates to a ground source heat pump coupling system based on photovoltaic light and heat. Background technique [0002] With the continuous growth of population and economy, human beings have an increasing demand for energy, which has led to the depletion of traditional energy and the serious damage to the ecological environment. Therefore, exploring clean new energy has become a new trend in global energy development. Improving the utilization efficiency of existing energy and accelerating the development of new energy are the main ways to solve the two fundamental problems of energy and environment in the process of human development. As one of the most abundant clean and renewable energy sources, solar energy has attracted widespread attention. [0003] The utilization of solar energy is mainly divided into two aspects: photoelectric conversion and phototherma...

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Problems solved by technology

However, if the ground source heat pump runs for a long time, the soil temperature will drop, and the operating performance of the

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