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요약정보
四种不同流程布置的风冷式冷凝器的试验研究 / Experimental Study on Air-cooled Condensers with Four Different Process Layouts
Resource Type
Academic Journal
Authors
臧润清
;
周会芳
;
张晨旭
;
Zang Runqing
;
Zhou Huifang
;
Zhang Chenxu
Source
流体机械 / Fluid Machinery
. 48(9):83-88
Subject
风冷式冷凝器
流程布置
迎面风速
迎风温度
Language
Chinese
ISSN
1005-0329
Online Access
Find it @ DONGA
초록
为了研究大型风冷式冷凝器不同流程布置送风条件对换热性能的影响,分别对不同迎面风速、不同迎风温度时的冷凝器换热量、制冷剂压降、相区长度进行了分析,结果表明:较低的迎面风速下增加合流点次数使两相区换热管长度增加,具有较高的制冷剂侧对流换热系数;在较低的迎风温度下,换热量随制冷剂合流次数的增加而增大;在较高的迎风温度下,换热量随制冷剂合流次数的增加而减小;Tai=25℃,管内制冷剂在相对长度等于0.74的位置已经进入过冷区,Tai=33℃时流程布置d的所有制冷剂合流点都处于两相区,导致合流之后制冷剂同时存在较大的压力梯度和较大的质量流速,使得制冷剂两相区饱和温度急剧下降至低于空气侧平均温度的温度区域.
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