|Table of Contents|

Experimental Study of Solar Micro ChannelSeparated Heat Pipe Heating System(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2017年04期
Page:
44-
Research Field:
能源与机械工程
Publishing date:

Info

Title:
Experimental Study of Solar Micro ChannelSeparated Heat Pipe Heating System
Author(s):
Qu Peipei; Niu Baolian; An Haiyang; Yu Yuejin
School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China
Keywords:
solar energy; micro-channel heat exchanger; separated heat pipe; supply heating
PACS:
TK519
DOI:
10.3969/j.issn.1672-1292.2017.04.008
Abstract:
Taking solar micro channel separation heat pipe heating system as the study object,the paper studies the heating performance of the system at appreciable solar radiation with experimental and theoretical methods. The results show that the heating load and the efficiency of the system,the pressure of gas supply pipe and liquid return pipe,the pressure drop and wall temperature of the micro channel radiator and the indoor temperature are affected greatly by solar radiation intensity,and are less affected by outdoor temperature. Moreover,they all lag behind the variation of solar radiation intensity about 15 minutes. In addition,between 10:00 and 15:00 when it is a partly cloudy day and a sunny day,the separate operation of the system can meet the indoor heating demand and the system pressure varies from 0.4 to 0.8 MPa. During this time,the average pressure drop range is 2.1×103～5×103 Pa,the minimum average wall temperature of the micro channel radiator is 20.7 ℃,while the maximum is 38.4 ℃ when the indoor temperature is maintained at 18.3～26.7 ℃. As well as the average lowest and highest value of the system heat load per second are 343.7 J and 424.1 J respectively,the average heating efficiency of the system is between 30.4%～45%. What’s more,there is no other power equipment in the system except condenser fan. Therefore,the system has an infinite COP,which is taken as a significant energy-saving auxiliary heating system.

References:

[1] ORó E,MIRó L,FARID M M,et al. Thermal analysis of a low temperature storage unit using phase change materials without refrigeration system[J]. International journal of refrigeration,2012,35(6):1 709-1 714.
[2]ALZUWAID F,GE Y T,TASSOU S A,et al. The novel use of phase change materials in a refrigerated display cabinet:an experimental investigation[J]. Applied thermal engineering,2015,75:770-780.
[3]刘书浩,张海涛,黄良赵,等. 数据中心热管背板空调应用实测研究——机房空气流场分析[J]. 制冷与空调,2015,15(2):51-56.
LIU S H,ZHANG H T,HUANG L Z,et al. Experimental study on application of heat pipe backboard air-conditioner in data center-analysis of unbalance operation in system[J]. Refrigeration and air-conditioning,2015,15(2):51-56.(in Chinese)
[4]钱晓栋,李震,李志信. 数据机房热管空调系统的实验研究[J]. 工程热物理学报,2012,33(7):1 217-1 220.
QIAN X D,LI Z,LI Z X. Experimental study on data center heat pipe air conditioning system[J]. Journal of engineering thermo physics,2012,33(7):1 217-1 220.(in Chinese)
[5]刘清,周健健,冯剑超,等. 数据机房分布式热管冷却系统及其应用研究[J]. 智能建筑,2013(10):44-46.
LIU Q,ZHOU J J,FENG J C,et al. Research and application of distributed heat pipe cooling system in data center[J]. Intelligent building,2013(10):44-46.(in Chinese)
[6]金鑫,瞿晓华,施骏业,等. 微通道型分离式热管基站节能特性实验研究[J]. 制冷学报,2012,33(6):32-37.
JIN X,QU X H,SHI J Y,et al. Research on the performance of telecommunication base station with separate heat pipe[J]. Journal of refrigeration,2012,33(6):32-37.(in Chinese)
[7]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 a special separate type heat pipe[J]. Journal of refrigeration,2015,36(4):98-102.(in Chinese)
[8]ZHENG Y,LI Z,LIU X,et al. Retrofit of air-conditioning system in data center using separate heat pipe system[M]. Berlin:Springer Heidelberg,2014:685-694.
[9]TANG Z,LIU A,JIANG Z. Two phase flow and heat transfer characteristics of a separate-type heat pipe[J]. Heat and mass transfer,2011,47(7):841-846.
[10]KUANG Y W,WANG W,ZHUAN R,et al. Simulation of boiling flow in evaporator of separate type heat pipe with low heat flux[J]. Annals of nuclear energy,2015,75:158-167.
[11]赵树兴. 采暖用平板式太阳能集热器的最佳倾角和最佳方位角[J]. 阳光能源,2005(2):56-59.
ZHAO S X. Optimal tilt angle and installation azimuth of flat plate solar collector for heating[J]. China construction dynamics,2005(2):56-59.(in Chinese)
[12]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.(in Chinese)
[13]RAHMAT M,HUBERT P. Two-phase simulations of micro heat pipes[J]. Computers and fluids,2010,39(3):451-460.
[14]郝莹,臧润清,金育义. 以R600A为工质的分离式热管的实验研究[J]. 低温与超导,2009,37(12):37-41.
HAO Y,ZANG R Q,JIN Y Y. Experimental research of separated heat pipe using R600A as working fluid[J]. Cryogenics and superconductivity,2009,37(12):37-41.(in Chinese)

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Last Update: 2017-12-30