冶金动力
冶金動力
야금동력
METALLURGICAL POWER
2014年
7期
42-44
,共3页
喷雾通风冷却塔%数值模拟%射流角度%壁流
噴霧通風冷卻塔%數值模擬%射流角度%壁流
분무통풍냉각탑%수치모의%사류각도%벽류
spray cooling tower%numerical simulation%injecting angle%wall flow
冷却塔是干熄焦循环水系统的核心设备，其换热效果直接影响干熄焦发电量和耗水率。马钢干熄焦系统中应用的喷雾通风冷却塔在使用中出现换热效果不佳、壁流严重以及塔体振动等问题。分析了喷雾通风冷却塔的基本原理，建立其物理模型，并使用计算流体力学软件进行数值计算，找出了其换热效果差与壁流有直接的关系。最后提出了一种解决方案，通过对喷嘴缩径提高射流角度，减少了壁流，从而有效地提高了换热效果。
冷卻塔是榦熄焦循環水繫統的覈心設備，其換熱效果直接影響榦熄焦髮電量和耗水率。馬鋼榦熄焦繫統中應用的噴霧通風冷卻塔在使用中齣現換熱效果不佳、壁流嚴重以及塔體振動等問題。分析瞭噴霧通風冷卻塔的基本原理，建立其物理模型，併使用計算流體力學軟件進行數值計算，找齣瞭其換熱效果差與壁流有直接的關繫。最後提齣瞭一種解決方案，通過對噴嘴縮徑提高射流角度，減少瞭壁流，從而有效地提高瞭換熱效果。
냉각탑시간식초순배수계통적핵심설비，기환열효과직접영향간식초발전량화모수솔。마강간식초계통중응용적분무통풍냉각탑재사용중출현환열효과불가、벽류엄중이급탑체진동등문제。분석료분무통풍냉각탑적기본원리，건립기물리모형，병사용계산류체역학연건진행수치계산，조출료기환열효과차여벽류유직접적관계。최후제출료일충해결방안，통과대분취축경제고사류각도，감소료벽류，종이유효지제고료환열효과。
Cooling tower is the core equipment in the circulative water system of CDQ and its performance directly influences the power output and water consumption rate in the coke dry quenching system. Problems such as poor heat transfer, serious wall flow and tower body vibration occurred during operation of the spray cooling tower at the coke dry quench-ing system of Masteel. In the paper the basic principle of spray cooling tower was analyzed, a mathematical model was established and numerical simulations were carried out with fluid dynamics calculation software to found out the direct relationship between poor transfer and wall flow. A solution to increase the injecting angle and reduce wall flow by injector hole shrinkage was finally put forward, which effectively improved heat transfer.
