摘要
分析了蓄热式热交换器传热和流动过程的不可逆性 ,提出了熵产数的概念。研究了传热熵产数和流动熵产数随蓄热式热交换器的入口温度比、水当量比及传热单元数的变化规律 ,指明了降低不可逆损失的方向 。
The irreversibility of heat transfer and fluid flow in regen erative he at exchanger was analyzed,and the number of entropy generation units was introdu ced.The rule that heat transfer and fluid flow entropy generation units changed with inlet-temperature ratio,water equivalent ratio and heat transfer units of regenerative heat exchanger was investigated.The direction to reduce irreversib le loss was pointed out,and some principles to design a regenerative heat exchan ger were presented.
出处
《冶金能源》
北大核心
2001年第5期21-25,共5页
Energy For Metallurgical Industry
关键词
陶瓷球蓄热式交换器
熵产数
流动
传热
ceramic-ball regenerative heat exchanger\ entropy generation units\ fluid flow\ heat transfer
