Electric heat storage circulating air volume-water temperature control system and prediction control method thereof
A circulating air volume and water temperature control technology, applied to heating systems, heating methods, and centralized heating, can solve problems such as difficulty in establishing accurate mathematical models and poor PID control effects, and achieve safe and stable heating effects
A circulating air volume and water temperature control technology, applied to heating systems, heating methods, and centralized heating, can solve problems such as difficulty in establishing accurate mathematical models and poor PID control effects, and achieve safe and stable heating effects
CN111998423APending Publication Date: 2020-11-27SHENYANG POLYTECHNIC UNIV
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[0036] The present invention will be further described below using the accompanying drawings and examples.
[0037] Such as figure 1 As shown, the air inlet at the lower end of the solid heat storage furnace 1 is connected with the air outlet of the frequency conversion fan 2, the air outlet at the upper end of the solid heat storage furnace 1 is connected with the upper port of the heat exchanger 3, and the air inlet of the frequency conversion fan 2 is connected with the heat exchanger The 3 phases are connected, the hot water output end of the heat exchanger 3 is connected with the water inlet pipe of the user heating equipment 4, the water outlet pipe of the user heating equipment 4 is connected with the cold water input end of the heat exchanger 3, and the water outlet pipe of the user heating equipment 4 is connected with the heat exchange pipe A supplementary water tank 5 is arranged on the pipeline connected to the cold water input end of the device 3 . When the heati...
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The invention relates to an electric heat storage circulating air volume-water temperature control system and a prediction control method thereof. The system comprises a solid heat storage furnace, avariable frequency fan, a heat exchanger, user heating equipment, a water replenishing tank and the like. The prediction control method comprises the following steps: the electric heat storage circulating air volume-water temperature control system is subjected to target setting of expected heating outlet water temperature or heating return water temperature; the heating outlet water temperature or the heating return water temperature of a heat exchanger is monitored in real time; the circulating air quantity of the cold air wind speed blown by the variable frequency fan is adjusted accordingto the real-time monitored heating outlet water temperature or heating return water temperature value; and according to the heating outlet water temperature or the heating return water temperature andthe circulating air quantity, adopting a dynamic matrix control algorithm to control the heating outlet water temperature or the heating return water temperature of the electric heat storage circulating air volume-water temperature control system. According to the electric heat storage circulating air volume-water temperature control system, the problem that the traditional PID control effect ispoor is avoided, and the problem that the heating outlet water temperature or the heating return water temperature fluctuates too much is avoided through the dynamic matrix control algorithm.
Description
technical field [0001] The invention relates to electric heat storage conversion technology, that is, the field of converting electric energy into thermal energy for storage and heating system control, in particular to an electric heat storage circulation air volume-water temperature control system and its predictive control method based on dynamic matrix system identification. Background technique [0002] Electric heat storage circulating air volume-water temperature control system, that is, circulating air volume-water temperature control is a complex system. It is impossible to accurately describe the internal coupling process of heat storage and heat transfer with formulas by simple mechanism modeling, which directly causes modeling errors. , thus causing the temperature control instability of the entire electric thermal storage circulation air volume-water temperature control system. Secondly, because the traditional PID heating control system will have a large lag tim...
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Patent Timeline
27 Nov 2020
Publication
CN111998423A
- IPC
- F24D11/00; F24D19/10
- CPC
- F24D11/004; F24D19/1009; Y02B30/70
- Inventors
- 邢作霞; 苏健