A heat storage peak-shaving device for a heating system

Abstract

The invention discloses a heat-storage peak regulating device used for a power supply system, and relates to a heating supply system and method for strengthening the self-adaptive performance of a heat supply system, simplifying a control process and realizing efficient and low-cost operation by utilizing a heat storage means. The device comprises a water supply section heat exchange tube (1), a water return section heat exchange tube (2), a heat storage / heat exchange module (3), a water supply tube of a water supply section heat exchange tube (1) connecting system and a water return tube of a water return section heat exchange tube (2) connecting system; a heat storage body is arranged in the heat storage / heat exchange module (3); the heat storage body is made of a phase-transition heat storage material and has a phase-transition temperature Tx0 which is set to be between the inlet water temperature of the water supply section heat exchange tube (1) and the return water temperature of the water return section heat exchange tube (2). According to the heat-storage peak regulating device, a high-position heat storage and low-position heat release means is adopted to reasonably digest heat exchange temperature difference caused by phase-change heat storage and increase inlet and return water temperature difference during practical operation of the system.

Description

Technical field [0001] The invention relates to a heating system and method that utilizes heat storage means to enhance the self-adaptive performance of the heating system, simplify the control process, and realize efficient and low-cost operation. It belongs to the technical field of heating system design and control. Background technique [0002] With the continuous development of China's heating metering reform, the system structure of the central heating system has undergone great changes. In order to adapt to this structural change, very high requirements are put forward for the system's control ability and automation. [0003] One of the main goals of the heat metering reform is to save energy. Under such a major premise, for the central heating system, it is necessary to achieve two points: heat source "heating on demand" and heat users "heating on demand". [0004] On-demand heating means simply that the heat source supplies heat according to the actual heat demand. At the ...

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Problems solved by technology

[0009] However, there are still some problems in the existing system, which are still caused by the fluctuation of the end load of the system:

[0010] 1. The system structure is complex, and the cost of operation and maintenance is high;

[0011] 2. The inertia of the system is relatively large, and the support for "behavioral energy saving" is relatively limited;

[0012] 3. There will be a certain deviation during the operation process, and the temperature difference between the system's inlet and outlet water will decrease, resulting in an increase in system energy consumption

[0015] 1. Traditional constant flow system (L1): Large flow transmission and distribution, the return water temperature of each node is extremely unstable, the temperature difference is small and the flow is large;

[0016] 2. Variable flow system (L2): A well-run variable flow system (smart heating network), the flow change curve is very close to the heat load curve, but the system structure and control are relatively complicated, and the return water temperature of each node will still vary. a certain fluctuation;

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