Central heating system having heat storage function and control method of central heating system

Abstract

The invention relates to a central heating system having a heat storage function. The central heating system comprises an electric boiler, heat storage modules, a heat exchanger, a temperature sensorand a flow sensor, wherein the heat exchanger comprises the temperature sensor and the flow sensor; a water loop where the electric boiler is positioned is a primary side; a water loop where the heatstorage module is positioned is a secondary side; a water loop for the heating system to output heat to a user side is a third side; the primary side water loop comprises an electric boiler and primary and secondary side heat exchangers which are connected in series; the secondary side comprises primary and secondary side heat exchangers, a heat storage circulating pump, a heat release circulatingpump and secondary and third side heat exchangers which are connected in series; the heat storage modules are connected in parallel with the two ends of the heat release circulating pump and the secondary and third side heat exchangers; and the third side water loop is composed of the secondary and third side heat exchangers, a user circulating pump and a user heat exchanger which are connected in series with one another. The invention further provides a control method adopted by the central heating system. The central heating system provided by the invention can be used for generating heat by adopting off-peak electricity or abandoned wind power and has the heat storage function.

Description

technical field [0001] The invention relates to technical fields such as energy saving, energy storage, electric power peak regulation, and thermal energy engineering, and specifically designs a heating system that uses off-peak electricity or discarded wind power for heating and has a heat storage function. Background technique [0002] In recent years, my country's power industry has developed rapidly, and the shortage of power supply has been resolved. However, at the same time, many areas have experienced excess power, especially the phenomenon of "wind power abandonment". Structural excess is particularly obvious. These problems have seriously affected the development of renewable energy power generation and brought greater challenges to power generation companies. [0003] At the same time, environmental problems such as smog have become increasingly prominent in recent years, and environmental governance has become urgent. Therefore, the country has clearly banned smal...

AI Technical Summary

Problems solved by technology

[0005] The advantage of the hot water tank system is that it is simple to construct, but its disadvantages are that the equipment is large in size and occupies a large area, and it is impossible to precisely control the output power and heat storage power during heat storage and heat release

The advantage of high-temperature phase-change thermal storage electric boilers is high energy storage density, but the disadvantage is that the thermal inertia of thermal storage electric boilers is large. Once the temperature of the boiler drops due to excessive heat release, maintenance, etc., the power cannot be increased instantly.

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