摘要
改善汽轮发电机冷却技术是提高汽轮发电机单机容量最有效、最现实途径。根据相似模化原理利用空气模拟氢气,通过循环风洞试验,研究了基管与翅片间胀紧量不同的穿片式氢气冷却器气体侧的传热与阻力特性,另外,分析了冷却水水速、风速以及胀紧量对冷却器传热及阻力性能的影响。
The most effective and practical way of improvement for unit capacity of turbo-generator is making a good progress of the cooling technology.Based on model principles,it studied heat transfer and friction characteristics of gas side fin-and-tube hydrogen cooler by using two different test pieces with different expanded connections between fin and tube in a circulated wind tunnel.Besides,the effects of cooling water velocity,air velocity and expanded connections for heat transfer and friction characteristics were also analyzed.
出处
《电站系统工程》
北大核心
2011年第2期13-15,18,共4页
Power System Engineering
关键词
汽轮发电机
穿片式氢气冷却器
传热及阻力性能
接触热阻
turbo-generator
fin-and-tube hydrogen cooler
performance of heat transfer and friction
thermal contact resistance
