Building heat supply system based on porous medium-hydrated salt composite energy storage material

Abstract

The invention discloses a building heat supply system based on a porous medium-hydrated salt composite energy storage material. The building heat supply system comprises a heat source link, a thermal battery device, a first air-air heat exchanger, a second air-air heat exchanger, a humidifying device, a building user side fan, an energy storage / release side fan and a building user, wherein the thermal battery device is a core component of the system and is filled with the porous medium-hydrated salt composite energy storage material. The thermal battery building heat supply system based on the porous medium-hydrated salt composite energy storage material has the outstanding advantages of being large in energy storage density, good in heat and humidity stability, small in heat loss and the like, and the compactness of the system / device can be improved easily; the problem of space-time mismatching between an energy supply side and a demand side can be well solved; and maximum utilization of low-grade heat energy can be realized, heat supply energy consumption and the operation cost of the building user are effectively reduced, the energy-saving potential is huge, and the economic benefit is obvious.

Description

technical field [0001] The invention relates to the technical field of thermochemical energy storage and building heating application, in particular to a building heating system based on a porous medium-hydrated salt composite energy storage material. Background technique [0002] At present, China's building energy consumption has accounted for more than 20% of the total energy demand. The contradiction between high environmental pollution and the continuous increase in social energy demand has become increasingly prominent, and how to alleviate this contradiction has become an important issue that needs to be resolved urgently. It is imperative to develop high-energy-efficiency and low-energy building heating forms. Solar energy is a safe and environmentally friendly solution, but due to its intermittent distribution during the day, night and season, large fluctuations limit the storage and efficient use of heat. When the solar energy is abundant, the building heating de...

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Problems solved by technology

[0003] Aiming at the defects of traditional energy storage technology such as low energy storage density, large heat loss, and inability to balance energy storage and heating supply, this invention will provide a new type of system with high energy storage density, low heat loss, and simultaneous energy storage and heating supply

The system uses low-grade thermal energy as the energy storage heat source, stores the heat in the form of chemical energy, and releases it for building heating when needed, which can realize the maximum utilization of low-grade thermal energy and solve the problem of energy supply and demand. space-time mismatch problem

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