A user-side multi-energy coupling cascade modular heat storage and heating system and method

Abstract

The invention discloses a user-side multi-energy coupling cascade modularized heat storage and heating system and method, using waste heat recovery components to collect domestic water with relatively high residual temperature and part of the system return water, and using a waste heat exchanger to transfer heat To feed water to the system, use photovoltaic heating components and natural gas furnaces to heat the system feed water. After the system feed water flows out of the photovoltaic heating components, if the temperature is not enough, use natural gas water heaters to further heat the system feed water. Use the multi-level phase change heat storage module to store the excess heat of the hot water flowing through the waste heat exchanger, photovoltaic heating components, and natural gas water heaters, and use it to cut peaks and fill valleys, stabilize the temperature of hot water supply and save resource consumption. At the same time, The phase-change heat storage module can also be transported to the user end to release heat directly after being charged with waste heat in the factory, which improves resource utilization and reduces user costs. The invention also utilizes the signal processing component to receive the sensor signal, and regulates the opening degree of each electromagnetic valve to control the flow and temperature of the hot water.

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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