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Received: 12 May 2019 Accepted: 18 September 2019 This paper carries out simulation and tests on an electric thermal storage heating system with solid storage material (SS-ETSHS), and discusses the law of thermal storage and release in system operation, aiming to reduce the energy consumption and enhance the reliability and safety of the system. Based on the lumped parameter method, a mathematical model of the SSETSHS was established, and then solved by Matlab programming. The simulation results were used to analyze the change laws of the temperature of the thermal storage structure (TSS), circulating air temperature, and water temperature of the heat exchanger. The simulation results were proved valid and accurate through actual engineering tests. In addition, the patterns of temperature variation in different parts of the system were investigated under quantity adjustment and quality adjustment. The results show that the simulated results deviated from the measured results by 7.9% at the maximum, suggesting that our model and program are suitable for simulating the SS-ETSHS; in both adjustment modes, the residual heat of the TSS could not be released in the thermal release phase but built up, severely suppressing the thermal efficiency of the system. The research results are of great significance to the safe and reliable operation of the SS-ETSHS, shedding light on the optimization of the system.

Thermal Storage and Release Features of Electric Thermal Storage Heating Systems with Solid Storage Material