山西电力
山西電力
산서전력
SHANXI ELECTRIC POWER
2013年
6期
45-47
,共3页
直接空冷凝汽器%翅片管换热器%阻力特性%空冷防冻
直接空冷凝汽器%翅片管換熱器%阻力特性%空冷防凍
직접공냉응기기%시편관환열기%조력특성%공랭방동
direct air-cooling condenser%finned-tube heat exchanger%resistance characteristics%air-cooling antifreezing
以某电厂300 MW机组单排管直接空冷凝汽器典型散热单元为研究对象,对冬季不同环境温度、不同出口风速下翅片管换热器阻力特性进行了测试;并重点研究了自然通风条件下,翅片管换热器的阻力特性,测试结果表明不同环境温度下,翅片换热器空气侧流动阻力皆随着出口风速的增加而升高,呈指数关系递增;环境温度因素对散热单元流动阻力的影响不大。
以某電廠300 MW機組單排管直接空冷凝汽器典型散熱單元為研究對象,對鼕季不同環境溫度、不同齣口風速下翅片管換熱器阻力特性進行瞭測試;併重點研究瞭自然通風條件下,翅片管換熱器的阻力特性,測試結果錶明不同環境溫度下,翅片換熱器空氣側流動阻力皆隨著齣口風速的增加而升高,呈指數關繫遞增;環境溫度因素對散熱單元流動阻力的影響不大。
이모전엄300 MW궤조단배관직접공냉응기기전형산열단원위연구대상,대동계불동배경온도、불동출구풍속하시편관환열기조력특성진행료측시;병중점연구료자연통풍조건하,시편관환열기적조력특성,측시결과표명불동배경온도하,시편환열기공기측류동조력개수착출구풍속적증가이승고,정지수관계체증;배경온도인소대산열단원류동조력적영향불대。
Taking a typical cooling unit of a 300 MW single-row-tube direct air cooling condenser in a power plant as the studying object,the resistance characteristics of finned-tube heat exchanger under different temperatures and air outlet velocity in winter were tested. The resistance characteristics of finned-tube heat exchanger under the condition of natural ventilation were studied with priority on, and the test results showed that under different surrounding temperatures,the flowing resistance on the air-side increased with the raise of the outlet velocity with an exponential ratio,while the influence of surrounding temperature was marginal.