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提出将拉西环作为蓄热元件用于蓄热室的技术构想,并建立数学模型对散堆拉西环蓄热室的热工特性进行模拟。结果表明:不同时刻蓄热体及气体的温度分布大致呈对数曲线;随换向时间及气体流速的减小、蓄热室长度的增加,温度效率、热效率逐渐升高;空气的出口平均温度取决于空气出口最低温度,烟气的出口平均温度取决于烟气出口最高温度,要达到较高的余热回收率就要保证有较高的空气出口温度和较低的烟气出口温度。
The technical idea of using Raschig ring as heat storage element in regenerator was proposed and a mathematical model was established to simulate the thermal characteristics of Raschig ring regenerator. The results show that the temperature distribution of regenerator and gas is logarithmic curve at different times. With the decrease of reversing time and gas flow rate, the length of regenerator increases, and the temperature efficiency and thermal efficiency increase gradually. The average outlet air temperature Depending on the minimum temperature of the air outlet, the average outlet temperature of the flue gas depends on the maximum temperature of the flue gas outlet, and a higher air outlet temperature and a lower flue outlet temperature are required to achieve a higher recovery of the waste heat.