Evaporative cooling experiment of microchannel heat exchanger in loop heat pipe

doi:10.11949/j.issn.0438-1157.20181065

CIESC Journal ›› 2018, Vol. 69 ›› Issue (S2): 161-166.DOI: 10.11949/j.issn.0438-1157.20181065

Previous Articles Next Articles

Evaporative cooling experiment of microchannel heat exchanger in loop heat pipe

LIU Haichao^1,2,3, SHAO Shuangquan^1,2, ZHANG Hainan^1,2, TIAN Changqing^1,2

1 CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, CAS, Beijing 100190, China;
2 Beijing Key Laboratory of Thermal Science and Technology, Technical Institute of Physics and Chemistry, CAS, Beijing 100190, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-09-25 Revised:2018-10-08 Online:2018-12-31 Published:2018-12-31
Supported by:
supported by the R&D Program of Guangdong Province (2017B090901030) and the National Natural Science Foundation of China (51676199).

回路热管微通道换热器蒸发冷却实验

刘海潮^1,2,3, 邵双全^1,2, 张海南^1,2, 田长青^1,2

1 中国科学院低温工程学重点实验室(理化技术研究所), 北京 100190;
2 热力过程节能技术北京市重点实验室(中国科学院理化技术研究所), 北京 100190;
3 中国科学院大学, 北京 100049

通讯作者: 邵双全
基金资助:
广东省省级科技计划项目（2017B090901030）；国家自然科学基金项目（51676199）。

Abstract

Abstract:

The microchannel heat exchanger is applied as the heat exchanger of the loop heat pipes in data center, and the evaporative cooling experiment is carried out on the side of the microchannel condenser. The influence of evaporative cooling on the microchannel condenser is measured by using the enthalpy difference chamber in the experiment, and the temperature difference between the inlet and outlet air of the microchannel condenser and evaporator with different indoor and outdoor temperature and humidity was analyzed. The experimental results show that evaporative cooling can make the condenser inlet air temperature achieve a large temperature drop and increase the temperature drop of the inlet and outlet air, while the spraying can cool the air through the heat pipe about 0.3-1.9℃ and increase about 0.1-0.6 kW heat transfer of the system. Moreover, the evaporative cooling capacity of microchannel condenser and evaporator increases with the increase of indoor and outdoor temperature difference, and decreases with the increase of outdoor relative humidity. Compared with single heat pipe air conditioning, loop heat pipe with evaporative cooling in data center can make better use of natural cooling energy, prolong the utilization time of air conditioning system in a year, and expand the application area of the system.

摘要：

采用微通道换热器作为数据中心回路热管冷却换热器，在微通道冷凝器侧进行了蒸发冷却实验。实验利用焓差平台测量了不同因素对采用蒸发冷却技术的微通道冷凝器换热影响，并分析了室内外不同温差、室外不同湿度条件下采用蒸发冷却的微通道冷凝器及蒸发器的进出口空气温差。实验结果表明：采用蒸发冷却可使冷凝器入口空气温度实现大幅温降，并增加冷凝器及蒸发器的进出口空气温度差值，喷淋后可使流经热管空气降温0.3～1.9℃，增大2%～20%的系统换热量，冷凝器换热效率得以提升，并可扩大回路热管换热器使用地区，延长回路热管年利用时间。

CLC Number:

LIU Haichao, SHAO Shuangquan, ZHANG Hainan, TIAN Changqing. Evaporative cooling experiment of microchannel heat exchanger in loop heat pipe[J]. CIESC Journal, 2018, 69(S2): 161-166.

刘海潮, 邵双全, 张海南, 田长青. 回路热管微通道换热器蒸发冷却实验[J]. 化工学报, 2018, 69(S2): 161-166.

References 24

[1]	中国工程建设标准化协会信息通信专业委员会.数据中心制冷与空调设计标准:T/CECS 487-2017[S].北京:中国计划出版社, 2017:2-8.China Association for Engineering Construction Standardization Information Communication Specialized Committee.Data center refrigeration and air conditioning design standard.:T/CECS 487-2017[S].Beijing:China Planning Press, 2017:2-8.
[2]	国家绿色数据中心试点工作方案印发推动完善绿色数据中心标准和评价体系[J].信息技术与标准化, 2015, (5):6.The national green data center pilot project issued to promote the improvement of green data center standards and evaluation system[J].Information Technology & Standardization, 2015, (5):6.
[3]	郑向平, 黄云.浅析环境友好型数据中心机房的节能[J].科技通报, 2018, 34(4):158-161.ZHENG X P, HUANG Y.Analysis of the energy saving for the environment friendly generator room of data center[J].Bulletin of Science and Technology, 2018, 34(4):158-161.
[4]	MEIJER G I.Cooling energy-hungry data centers[J].Science, 2010, 328(5976):318-319.
[5]	何晓梅, 冯梅, 李捷, 等.企业数据中心建设实践之制冷系统设计要点浅谈[J].信息系统工程, 2013, (3):51-54.HE X M, FENG M, LI J, et al.Key points of refrigeration system design for enterprise data center construction practice[J].Information System Engineering, 2013, (3):51-54.
[6]	安真.数据中心的节能分析[J].智能建筑电气技术, 2011, 5(5):62-64.AN Z.Energy-saving analysis of data centers[J].Electrical Technology of Intelligent Buildings, 2011, 5(5):62-64.
[7]	李智.下一代通信机房及IDC数据中心能源成本战略[C]//中国科协年会信息化与社会发展学术讨论会.2008.LI Z.Energy cost strategy for next generation communication room and IDC data center[C]//China Association for Science and Techno-logy Annual Conference Informatization and Social Development Symposium.2008.
[8]	ASHRAE.ASHRAE Fundamental Handbook[M].Atlanta:ASHRAE, 2016.
[9]	PAWLISH M, APAMA S V.Free cooling:a paradigm shift in data centers[C]//International Conference on Information and Automation for Sustainability.IEEE, 2011:347-352.
[10]	YAN Y H.The use of a double heat pipe heat exchanger system for reducing energy consumption of treating ventilation air in an operating theatre-a full year energy consumption model simulation[J].Energy & Buildings, 2008, 40(5):917-925.
[11]	田浩, 李震, 刘晓华, 等.信息机房热管空调系统应用研究[J].建筑科学, 2010, 26(10):141-145.TIAN H, LI Z, LIU X H, et al.Application of heat pipe air conditio-ning system in data center[J].Building Science, 2010, 26(10):141-145.
[12]	李奇贺, 黄虎, 张忠斌.热管式机房空调性能实验研究[J].暖通空调, 2010, 40(4):145-148.LI Q H, HUANG H, ZHANG Z B.Performance experiment of heat pipe type air conditioning units for computer and data processing rooms[J].Heating Ventilating & Air Conditioning, 2010, 40(4):145-148.
[13]	金鑫, 瞿晓华, 祁照岗, 等.微通道型分离式热管传热性能实验研究[J].制冷学报, 2011, 32(3):15-19.JIN X, QU X H, QI Z G, et al.Experimental investigation on heat transfer of microchannel separate heat pipe[J].Journal of Refrigeration, 2011, 32(3):15-19.
[14]	SAMBA A, LOUAHLIA G H, MASSON S L, et al.Two-phase thermosyphon loop for cooling outdoor telecommunication equip-ments[J].Applied Thermal Engineering, 2013, 50(1):1351-1360.
[15]	肖宏志, 刘一兵.微型热管传热极限的研究[J].低温与超导, 2010, 38(5):76-78.XIAO H Z, LIU Y B.The investigation on heat transfer limit of micro heat pipe[J].Cryogenics & Super-conductivity, 2010, 38(5):76-78.
[16]	IVANOVSKI M N, SORKIN V P, YAGODKIN I V.The Physical Principles of Heat Pipes[M].Clarendon Press, Oxford University Press, 1982.
[17]	胡张保, 张志伟, 金听祥, 等.分离式热管在机房空调系统中应用研究进展[J].低温与超导, 2015, 43(1):64-68+94.HU Z B, ZHANG Z W, JIN T X, et al.Review of research on the application of separated type heat pipe in air conditioner for computer and data processing rooms[J].Cryogenics & Superconductivity, 2015, 43(1):64-68+94.
[18]	张剑飞, 秦妍, 孔祥国.扁管和百叶窗式微通道换热器空气侧阻力的实验研究[J].制冷学报, 2014, 35(1):88-91.ZHANG J F, QIN Y, KONG X G.Experimental study of the air resistance of microchannel heat exchanger with flat tube and louver fin[J].Journal of Refrigeration, 2014, 35(1):88-91.
[19]	胡张保, 张志伟, 李改莲, 等.采用微通道蒸发器的分离式热管空调传热性能的试验研究[J].流体机械, 2015, 43(11):68-71.HU Z B, ZHANG Z W, LI G L.Experimental investigation on the heat transfer performance of the separate type heat pipe air conditioning with a microchannel evaporator[J].Fluid Machinery, 2015, 43(11):68-71.
[20]	胡张保, 张志伟, 金听祥,等.采用微通道蒸发器的分离式热管充液率实验研究[J].制冷学报, 2015, 36(4):98-102.HU Z B, ZHANG Z W, JIN T X, et al.Experimental study on the working fluid filling rates of microchannel evaporator in a special separate type heat pipe[J].Journal of Refrigeration, 2015, 36(4):98-102.
[21]	金育义, 臧润请, 顾永明.分离式热管在不同高度差下传热性能的实验研究[J].应用能源技术, 2009, (4):45-47+51.JIN Y Y, ZANG R Q, GU Y M.Experimental investigation of heat transferring capacity of separate type heat pipe which under different level difference[J].Applied Energy Technology, 2009, (4):45-47+51.
[22]	钱晓栋, 李震.数据中心空调系统节能研究[J].暖通空调, 2012, 42(3):91-96.QIAN X D, LI Z.Energy saving research on air conditioning system in data centers[J].Heating Ventilating & Air Conditioning, 2012, 42(3):91-96.
[23]	QURESHI B A, ZUBAIR S M.Prediction of evaporation losses in evaporative fluid coolers[J].Applied Thermal Engineering, 2007, 27(2):520-527.
[24]	朱冬生, 沈家龙, 唐广栋, 等.水分布对蒸发式冷凝器传热传质的影响[J].工程热物理学报, 2007, 28(1):83-85.ZHU D S, SHEN J L, TANG G D, et al.Influence of water distribution on the heat and mass transfer performance of evaporative condenser[J].Journal of Engineering Thermophysics, 2007, 28(1):83-85.

Evaporative cooling experiment of microchannel heat exchanger in loop heat pipe

回路热管微通道换热器蒸发冷却实验

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References 24

Related Articles 10

Recommended Articles

Metrics

Comments

[1]	XU Jingxuan, LIN Wensheng, RUAN Binhui. Preliminary study on heat transfer calculation of submerged combustion LNG vaporizer [J]. CIESC Journal, 2018, 69(S2): 147-152.
[2]	TIAN Yajie, LIN Wensheng. Comparison of solutions of LNG heat exchangers used on LNG powered ships [J]. CIESC Journal, 2018, 69(S2): 141-146.
[3]	JIN Chengcheng, WANG Ruzhu, ZHAI Xiaoqiang, JIN Zhequan. Analysis of air source heat pump with small temperature difference fan-coil units for high efficient and comfort heating [J]. CIESC Journal, 2016, 67(S2): 51-57.
[4]	WANG Bojie, KUANG Yiwu, QI Chao, WANG Wen, XU Jiawei, HUANG Yu. Analysis of heat transfer to supercritical LNG in intermediate fluid vaporizer [J]. CIESC Journal, 2015, 66(S2): 220-225.
[5]	JIA Zhihai, LEI Wei, HE Jichang, CAI Taimin. Vibration-induced Wenzel-Cassie wetting transition on rough patterned surface [J]. CIESC Journal, 2014, 65(2): 544-549.
[6]	PENG Deqi, SHI Bingle, YU Tianlan, YU Tianxiang, LIU Yangping, YE Lei. Cleaning mechanism and scale prevention of reciprocating and vibrating spiral-insert [J]. CIESC Journal, 2013, 64(9): 3168-3174.
[7]	JIAO Feng, DENG Xianhe. Structural optimization of converging-diverging tube based on heat transfer enhancement for self-support rectangle heat exchanger [J]. CIESC Journal, 2013, 64(7): 2376-2385.
[8]	HONG Yuxiang, DENG Xianhe, ZHANG Lianshan. Slow change of effective heat transfer temperature difference of highly viscous fluid on shell side [J]. CIESC Journal, 2012, 63(2): 441-447.
[9]	Jiang Guodong (Department of Mechanical Engineering, Lanzhou Railway Institute, Lanzhou?730070). HEAT TRANSFER AND PRESSURE DROP OF TUBE BANKS WITH INTERRUPTED HALF ANNULAR GROOVE FIN [J]. , 2000, 51(5): 604-608.
[10]	Ding Rong and Xuan Yimin (School of Power Engineering,Nanjing University of Science and Technology,Nanjing?210094). NUMERICAL AND EXPERIMENTAL ANALYSIS OF FLOW IN WAVY CHANNEL [J]. , 2000, 51(5): 708-712.