Control method for phase change heat storage heating system

Abstract

The invention discloses a control method for a phase change heat storage heating system. The phase change heat storage heating system comprises a central processing unit, a storage device, an electric heating boiler, a heat reservoir and a detection device. The central processing unit is connected with the electric heating boiler, the heat reservoir, the detection device and the storage device. The control method includes the following steps that firstly, heat storage is conducted on the heat reservoir through the electric heating boiler in the valley electricity time, heat release is conducted on the heat reservoir in the peak electricity time, and the rest of heat Qs of the electric heating boiler is calculated; secondly, the heat Qx needed in the period from the current time to the valley electricity starting time is estimated; and thirdly, whether Qs is smaller than Qx is judged, if the judgment result shows that Qs is smaller than Qx, the electric heating boiler is immediately started to store energy for the heat reservoir or store energy for the reservoir in the low-electricity-price time period, and if the judgment result shows that Qs is not smaller than Qx, the first step is executed. The whole phase change heat storage heating system is monitored, the starting time of the electric heating boiler can be elaborately controlled, when the heat of heat reservoir energy is insufficient for maintaining use of a user at a certain moment, heat storage and energy storage are conducted on the heat reservoir automatically in a relatively-ordinary-electricity-price time period or a valley-electricity-price time period.

Description

technical field [0001] The invention relates to the technical field of heating, in particular to a control method for a phase-change thermal storage heating system. Background technique [0002] According to the requirements of the National Development and Reform Commission, it is necessary to complete the transformation of more than 95% of the existing residential households in the country by the end of 2017, fully implement the peak-valley electricity price for residential electricity, and require the areas that have not yet introduced the peak-valley electricity price for residential electricity to issue policies before the end of 2015. Residents The user chooses to execute. That is, the power supply bureaus of all provinces and cities across the country will provide industrial, commercial and ordinary residents with a 50% discount on electricity prices from 23:00 to 7:00 the next morning to encourage nighttime electricity consumption, thereby improving the economic benef...

AI Technical Summary

Problems solved by technology

In this new type of use, in order to solve the problem of all-weather heating, two electric boilers need to be installed. During the heat storage process of the heat accumulator, one electric boiler provides heating for the outside, and the other electric boiler needs to separately heat the heat accumulator. Heat storage, which undoubtedly increases the complexity of the pipeline and equipment layout of the entire system, and also increases the input cost of equipment

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