Study on hydro-thermal coupling heat transfer performance of flue gas-water heat exchanger

IF 4.6 Q1 OPTICS
Zile Jia, Dan Liu, Hao Sun, Meng Zhao, Xingbo Lan
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引用次数: 0

Abstract

Abstract The finned tube heat exchanger is the core component of the flue gas waste heat utilization system. In order to optimize and control the heat transfer efficiency of the heat exchanger in real time under smart heating conditions, we use the entransy dissipation thermal resistance as a kernel index to assess its heat exchange performance, and Trnsys simulation software is employed to figure out the influence of heat exchanger operating parameters (flue gas inlet velocity) and fin structure parameters (fin height, fin pitch) on heat exchanger heat transfer characteristics. The results show that in a reasonable range, increasing the flue gas inlet velocity can decrease the irreversible loss of heat transfer, obviously improving the heat transfer effect. The pitch and height of the fin also have a large impact on the performance of heat transfer. To significantly promote the performance of the heat exchanger, it is useful to reduce the pitch of the fin and increase the fin height within a reasonable range.
烟气-水换热器水-热耦合换热性能研究
翅片管换热器是烟气余热利用系统的核心部件。为了实时优化和控制智能采暖工况下换热器的换热效率,我们以传热耗散热阻为核心指标评估其换热性能,并利用Trnsys仿真软件计算换热器运行参数(烟气进口速度)和翅片结构参数(翅片高度、翅片间距)对换热器换热特性的影响。结果表明,在合理的范围内,提高烟气进口速度可以降低传热的不可逆损失,明显提高换热效果。翅片的间距和高度对传热性能也有很大的影响。为了显著提升换热器的性能,在合理的范围内减小翅片的节距,增加翅片的高度是有用的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
10.70
自引率
0.00%
发文量
27
审稿时长
12 weeks
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