User-side multi-energy coupling cascade modular heat storage and supply system and method

Abstract

The invention discloses a user-side multi-energy coupling cascade modular heat storage and supply system and method. A waste heat recovery assembly is used for collecting domestic water with high waste heat and part of system return water, a waste heat exchanger is used for transferring heat to system feed water, a photovoltaic heating assembly and a natural gas furnace are used for heating the system feed water, and after the system feed water flows out of the photovoltaic heating assembly, if the temperature is not enough, the natural gas water heater is used for further heating the system feed water. A multi-stage phase change heat storage module is used for storing redundant heat of hot water flowing through the waste heat exchanger, the photovoltaic heating assembly and the natural gas water heater and used for peak load shifting, hot water supply temperature stabilizing and resource consumption saving; and meanwhile, the phase change heat storage module can be conveyed to a user side to directly release heat after being charged with heat through waste heat in a factory, and the user cost is reduced while the resource utilization rate is improved. A signal processing assembly is further used for receiving sensor signals, the opening degree of each electromagnetic valve is regulated and controlled accordingly, and the hot water flow and temperature are controlled.

Description

technical field [0001] The invention relates to the fields of solar energy, waste heat utilization, heat storage and heat supply, and in particular to a user-side multi-energy coupling cascade modularized heat storage and heat supply system and method. Background technique [0002] Because of the low winter temperature in northern cities, winter heating was taken into consideration during urban construction, so a large-scale pipe network was set up for centralized heating. In comparison, southern cities have higher winter temperatures than northern cities, so When the city was built, it was not considered to join the heating pipe network for centralized heating. However, with the advancement of science and technology, people's pursuit of a comfortable life has further improved. Due to the difficulty of reinstalling a large-scale pipe network, and the fact that residents in southern cities have different demands for heating, it is necessary to design a small-scale heating sys...

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Problems solved by technology

[0002] Because of the low winter temperature in northern cities, winter heating was taken into consideration during urban construction, so a large-scale pipe network was set up for centralized heating. In comparison, southern cities have higher winter temperatures than northern cities, so When the city was built, it was not considered to join the heating pipe network for centralized heating. However, with the advancement of science and technology, people's pursuit of a comfortable life has further improved. Because it is difficult to install a large-scale pipe network again, and the demand for heat supply by residents in southern cities is not uniform, it is necessary to design a small-scale heat supply system at the user end

[0003] Natural gas water heaters and solar water heaters are very common devices for heating water supply. However, for the continuous heating of individual households in winter for a long time, the cost of using natural gas water heaters alone is too high, and solar water heaters face problems such as heating instability that changes day and night.

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