Study on the energy charging process of a plate-type latent heat thermal energy storage unit and optimization using Taguchi method
Autor: | Lihui Liu, Youhong Chu, Xiaoqin Sun, Jie Li, Yajing Mo, Shuguang Liao |
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Rok vydání: | 2020 |
Předmět: |
Range (particle radiation)
Materials science Natural convection 020209 energy Energy Engineering and Power Technology 02 engineering and technology Mechanics Thermal energy storage Industrial and Manufacturing Engineering Energy storage Taguchi methods 020401 chemical engineering Experimental system Latent heat 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Energy (signal processing) |
Zdroj: | Applied Thermal Engineering. 164:114528 |
ISSN: | 1359-4311 |
Popis: | To understand the energy charging process of a plate-type thermal energy storage unit using phase change materials (PCMs) under various conditions, an experimental system was fabricated to identify the impact of heat transfer fluid (HTF) temperature, HTF velocity and plate inclination. The energy charging cycles were studied using liquid fraction and accumulated energy storage density with detailed temperature profiles. After the Taguchi optimization, a maximum energy charging rate of 759 W with a 23% increment was obtained with the HTF temperature of 55 °C, the HTF velocity of 5 m/s and the plate inclination of 75°. The melting process was influenced the most by the HTF temperature, followed by the HTF velocity and the plate inclination based on the standardized melting time. However, the influence of inclination angle was larger than the HTF velocity according to the actual melting time. Optimizing inclination angle was an effective way to improve the melting process without consuming additional materials and energy. Because of the PCM natural convection, the melting temperature range varied under different conditions. It was critical to identify the actual melting temperature range to predict the melting performance accurately. |
Databáze: | OpenAIRE |
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