Solar energy and low-temperature air source heat pump assisted phase change heat storage and supply system and method

Abstract

The invention belongs to the technical field of heat storage and supply, and particularly discloses an air source and solar energy assisted heat storage and supply system which comprises a solar heat collector, a solar energy / air double-source heat pump unit, a heat storage water tank and a user side which are communicated through a pipeline. The solar heat collector is used for absorbing solar energy to heat the circulating medium; the solar / air double-source heat pump unit is used for exchanging heat in low-temperature air into the circulating medium in the heat storage water tank under the assistance of the connected heated circulating medium, or only exchanging the heat in the low-temperature air into the circulating medium in the heat storage water tank; the user side is used for supplying heat to a user by utilizing the heat of the circulating medium in the heat storage water tank; the device further comprises a circulation selection mechanism. The invention further discloses a corresponding heating method, and the technical problem that a single solar heating system cannot provide a stable and reliable heat source for the interior of a room is solved.

Description

technical field [0001] The invention belongs to the technical field of heat storage and heat supply, and particularly relates to an air source and solar energy-assisted heat storage and heat supply system and method. Background technique [0002] The traditional distributed heating system uses fossil fuels as the main energy supply method, which has problems such as poor economy and environmental pollution. On the other hand, heating methods such as heat pumps and air conditioners have problems such as high operating costs and increased pressure during peak hours of the power grid. [0003] As a renewable energy, solar energy has the obvious advantages of green environmental protection, energy saving and economy, and has become the energy with the most development potential at present, and the plateau area has abundant solar energy resources that can be utilized. Due to the instability of solar energy, only using solar energy for heating will lead to an increase in the numb...

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Problems solved by technology

[0004] The present invention intends to propose a solar energy and low-temperature air source heat pump assisted phase change heat storage heating system, which maximizes the use of solar energy, supplements the air source heat pump as the second heat source, and adopts enhanced heat exchange type convection-radiation at the user end Combined phase change heat storage floor to realize night heating, to solve the technical problem that a single solar heating system cannot provide a stable and reliable heat source for the room

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