High-low-temperature phase-change heat storage type energy supply device and control method

Abstract

The invention discloses a high-low-temperature phase-change heat storage type energy supply device and a control method. A gas outlet of a compressor in the energy supply device is sequentially connected with a condenser and a primary throttle valve, an outlet of the first throttle valve is equipped with two pipelines, the outlet of the first pipeline is connected with a gas inlet of the compressor, the first pipeline is sequentially equipped with a secondary throttle valve and an evaporator according to a flowing direction of a refrigerant, the outlet of the second pipeline is connected withan inlet of an evaporating coiled tube of a solar heat collector, an outlet of the evaporating coiled tube of the solar heat collector is connected with the gas inlet of the compressor; a heat exchange outlet of the solar heat collector and an outlet of a buffer heat storage box are connected with an inlet of an energy supply tail end; a heat exchange inlet of the solar heat collector and an inletof the buffer heat storage box are connected to an outlet of the energy supply tail end; the second pipeline, a heat exchange outlet of the solar heat collector and an outlet of the buffer heat storage box are each equipped with a valve; the condenser is arranged in the buffer heat storage box; and the solar heat collector and the buffer heat storage box are separately filled with a low-temperature phase-change heat storage material and a solar phase-change heat storage material.

Description

technical field [0001] The invention belongs to the field of composite energy supply, and relates to a high-low temperature phase change heat storage energy supply device and a control method. Background technique [0002] The statements herein merely provide background information related to the present invention and may not necessarily constitute prior art. [0003] Air source heat pump technology is an energy-saving and environmentally friendly heating technology based on the reverse Carnot cycle principle. With refrigerant as the medium, the compressor converts the low-temperature and low-pressure gaseous refrigerant into a high-pressure and high-temperature gaseous state. The high-temperature and high-pressure gaseous refrigerant is in the condenser. Heat exchange with water or air, the high-pressure refrigerant is cooled and condensed into a liquid state at room temperature. The heat released by the refrigerant is used to heat water or air to obtain hot water or hot a...

AI Technical Summary

Problems solved by technology

The air source heat pump is a cold and heat source equipment that uses outdoor air as the energy-carrying medium on the heat source side. Therefore, when the outdoor ambient temperature is low, the evaporation temperature is low and the compression ratio is large, resulting in small heating capacity, low energy efficiency ratio, and high exhaust temperature of the compressor. , sometimes there is even a problem that it cannot be started, and it is easy to frost the outdoor heat exchanger, which will aggravate the performance decline

The problem of performance degradation at low temperature can be solved to a certain extent by introducing solar auxiliary energy, but there are also problems that the system is unstable and greatly affected by weather and night

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