Experiment and characterization of dynamic thermal storage characteristics of porous media thermal storage system

Ke Yan, Leming Cheng, Weiguo Zhang, Zhengzhan Shi, Kunzan Qiu

Article ID: 1512
Vol 4, Issue 1, 2021

VIEWS - 640 (Abstract) 415 (pdf)

Abstract


The aim is to understand the thermal storage characteristics of porous media thermal storage materials under thermal dynamic conditions, and obtain the dynamic thermal storage characteristics parameters of thermal storage materials. In the 120 kW thermal dynamic thermal storage system of porous media, we studied the dynamic thermal storage characteristics of honeycomb porous ceramic thermal storage materials with different pore diameters (2.9, 4, 5.5 mm) and lengths (100–400 mm) under different hot flue gas conditions include thermal storage rate, thermal storage efficiency and storage. The results show that the relationship between the heat storage rate and time is parabolic, and the heat storage efficiency gradually decreases with the heat storage time. At the same time, the regenerative rate and unit regenerative resistance loss increase with the increase of specific surface area or the decrease of pore diameter of regenerator, and the regenerative efficiency increases with the increase of regenerator length. According to the experimental research and analysis, the dynamic heat storage characteristics of porous regenerator can be characterized by heat storage rate, heat storage efficiency and unit heat storage resistance loss.

Keywords


Porous Media; Thermodynamics; Dynamic; Heat Storage; Heat Storage Rate; Heat Storage Efficiency; Heat Storage Resistance

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DOI: https://doi.org/10.24294/tse.v4i1.1512

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