[1]宋胜飞,王强,*,等.翅片间距对两流路双排管蒸发器换热影响分析[J].山东建筑大学学报,2020,35(04):45-50.[doi:10.12077/sdjz.2020.04.007]
 SONG Shengfei,WANG Qiang,*,et al.Analysis of the influence of fin spacing on heat transfer performance of double-row tube evaporator with two circuits[J].Journal of Shandong jianzhu university,2020,35(04):45-50.[doi:10.12077/sdjz.2020.04.007]
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翅片间距对两流路双排管蒸发器换热影响分析()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
35
期数:
2020年04期
页码:
45-50
栏目:
研究论文
出版日期:
2020-07-15

文章信息/Info

Title:
Analysis of the influence of fin spacing on heat transfer performance of double-row tube evaporator with two circuits
文章编号:
1673-7644(2020)04-0045-06
作者:
宋胜飞1王强1*高士清2夏肖丰3
(1.山东建筑大学 热能工程学院,山东 济南 250101;2.贝莱特空调有限公司,山东 德州 253022;3.烟台睿加节能科技有限公司,山东 烟台 264001)
Author(s):
SONG Shengfei1WANG Qiang1*GAO Shiqing2XIA Xiaofeng3
( 1. School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China;2. Bright Air Conditioning Co., Ltd., Dezhou 253022, China;3. Yantai Lngendow Energy Saving Technology Co., Ltd., Yantai 264001, China )
关键词:
翅片管蒸发器两流路EVAP-COND翅片间距换热性能
Keywords:
finned tube evaporator two circuits EVAP-COND fin spacing heat transfer performance
分类号:
TB657
DOI:
10.12077/sdjz.2020.04.007
文献标志码:
A
摘要:
翅片管蒸发器换热性能直接影响制冷空调机组能效,调整翅片间距是增大换热面积、改进换热效果的有效途径。文章建立了翅片管蒸发器的流体流动简化模型,利用EVAP-COND软件模拟了外掠气流中三角风速分布工况下,不同翅片间距对两流路双排管蒸发器换热性能的影响。结果表明:翅片间距越大,蒸发器的换热量越小,翅片间距为1.75、2.00、2.25、2.50 mm时的换热量分别比1.50 mm时减小了4.4%、9.02%、14.1%和18.2%;翅片间距越大,制冷剂流量就越小,蒸发器的总换热量也就越小;蒸发器中显热比随翅片间距的增大而降低,综合考虑空气阻力损失及换热,翅片间距为2.00 mm较为合理;不同翅片间距工况下,制冷剂在不同支路每根管内吸热对外掠空气降温影响与换热量一致。
Abstract:
The heat transfer performance of finned tube evaporator directly affects the energy efficiency of refrigeration and air conditioning units, while the effective way to improve the heat transfer effect is to increase the heat transfer area by adjusting the spacing of fins. In this paper, a simplified fluid flow model for finned tube evaporator is established and the effect of different fin spacing on the heat transfer performance of double-row tube evaporator with two circuits was simulated under the condition of triangular wind speed distribution in the external swept flow by the software EVAP-COND . The results show that the larger the fin spacing is, the smaller the heat transfer of the evaporator will be. The fin spacing of 1.75, 2.00, 2.25 and 2.50 mm will decrease 4.4%, 9.02%, 14.1% and 18.2%, respectively, compared with 1.5 mm. The greater the spacing of fins,the smaller the refrigerant flow, the smaller the total heat transfer of the evaporator. The sensible heat ratio in the evaporator decreases with the increase of fin spacing. Considering the loss of air resistance and heat transfer, the fin spacing of 2.0 mm is more reasonable.Under the different conditions of fin spacing, the cooling effectt of external swept airof heat absorption of refrigerant in each tube of different branches is consistent with that of heat exchange.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-07-07 基金项目:山东省重点研发计划项目(2019GGX103046, 2019GGX103013)作者简介:宋胜飞(1994-),男,在读硕士,主要从事制冷与热泵技术等方面的研究. E-mail:ssfei0722@163.com 通讯作者*:王强(1971-),男,教授,博士,主要从事制冷空调设备及系统仿真优化设计等方面的研究.E-mail:xjdwq@163.com
更新日期/Last Update: 2020-07-13