Comparison of RC-model and FEM-model for a PCM-plate storage including free convection
نویسندگان
چکیده
Latent heat storage is one option to increase the efficiency and reduce CO2-emissions of process applications in temperature range between 100 °C 250 °C. In present study a latent system based on flown through exchanger plates according FracTherm®-design examined. The sugar alcohol d-mannitol used as PCM. A simplified capacity resistor (RC) simulation model developed. contrast common RC-models, this can simulate free convection material liquid phase during charging. Additionally, detailed physical Finite-Element-Method developed validated with measured data. verification new RC-model FEM-model carried out. mean deviation outlet fluid both models 0.62 K. PCM-temperature 0.85 Due 20 30 times shorter time, well suited for dimensioning optimizing plate type exchangers storages.
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ژورنال
عنوان ژورنال: Applied Thermal Engineering
سال: 2021
ISSN: ['1873-5606', '1359-4311']
DOI: https://doi.org/10.1016/j.applthermaleng.2021.117232