发电技术2025，Vol.46Issue(6)：1184-1191,8.DOI:10.12096/j.2096-4528.pgt.24071
低气压环境下固体蓄热材料的蓄释热特性研究
Research on Heat Storage and Release Characteristics of Solid Heat Storage Materials in Low-Pressure Environments
摘要
Abstract
[Objectives]When solid heat storage devices are applied in high-altitude areas,the thin air leads to significant variations in their heat storage and release performance.To address this,a method for testing the heat storage and release characteristics of solid heat storage materials in low-pressure environments in high-altitude areas is proposed.[Methods]A test bench for low-pressure environment simulation is constructed,consisting of an air loop unit,a water loop unit,and a data acquisition unit.Heat storage and release tests are conducted on a heat storage unit composed of two heat storage bricks under pressures ranging from 40 kPa to 101 kPa.By recording the inlet air temperature and the temperature variations of the heat storage bricks,the heat storage and release rates of the heat storage materials in low-pressure environments are analyzed,and the heat transfer performance between the air and heat storage bricks under different pressures is compared.[Results]Compared to the 101 kPa condition,the heat storage time increases significantly under both 80 kPa and 40 kPa conditions,with lower air pressure requiring longer heat storage time.Additionally,the average heat storage rates of the heat storage bricks at 80 kPa and 40 kPa decrease by approximately 15％and 55％,respectively.During heat release,the heat release time increases by 26.1％at 80 kPa and 135.4％at 40 kPa.[Conclusions]Air pressure significantly affects the heat storage and release rates of heat storage bricks,the experimental results can provide guidance for the design of solid heat storage devices applied in high-altitude areas.关键词
可再生能源/储能/蓄热材料/蓄热特性/释热特性/温度分布/储热技术Key words
renewable energy/energy storage/heat storage materials/heat storage characteristics/heat release characteristics/temperature distribution/heat storage technology分类
能源科技引用本文复制引用
陈梦东,康伟,邓占锋,赵文强,雷国斌..低气压环境下固体蓄热材料的蓄释热特性研究[J].发电技术,2025,46(6):1184-1191,8.基金项目
国网公司科技项目(5419-202134244A-0-0-00).Project Supported by State Grid Corporation Technology Project(5419-202134244A-0-0-00). （5419-202134244A-0-0-00）
