无填料热源塔吸热效率实验

doi:10.11949/j.issn.0438-1157.20170422

摘要/Abstract

摘要：

建立无填料热源塔热泵系统实验平台，研究不同进风位置、喷嘴位置、室外空气干球温度、相对湿度、风量、溶液入口温度下无填料热源塔吸热效率的变化规律。结果表明：进风位置和喷嘴位置对热源塔的吸热效率会产生影响，下喷式无填料热源塔吸热效率高于上喷式无填料热源塔；干球温度与吸热效率无明显相关性，但干球温度升高，热源塔从空气中吸收的总热量增加；相对湿度和风量升高，吸热效率提高；溶液入口温度升高，热源塔的吸热效率明显提高。与其他参数相比，溶液入口温度对热源塔的吸热效率影响最大。

关键词: 无填料热源塔, 吸热效率, 传热, 传质, 吸收

Abstract:

An experimental system was established for non-packed heat source tower system. The heat absorption efficiency of the heat source tower was studied under the different air inlet positions, spray nozzle positions, air dry-bulb temperatures, relative humidity, air flow rates, and solution inlet temperatures. The results show that the position of air inlet and spray nozzle has obvious impact on heat absorption efficiency. The heat absorption efficiency of down-spray heat source tower is better than that of the up-spray tower. There was no significant correlation between heat absorption efficiency and dry-bulb temperature, while with the air dry-bulb temperature increases the total amount of heat absorbed from the air increases. The heat absorption efficiency increases with the air flow rate and relative humidity increase. With the inlet solution temperature increasing, the heat absorption efficiency is obviously improved. Compared with other parameters, the inlet solution temperature has the greatest impact on heat absorption efficiency.

Key words: non-packed heat source tower, heat absorption efficiency, heat transfer, mass transfer, absorption

中图分类号:

TU833

张楠, 李念平, 崔海蛟, 李胜兵. 无填料热源塔吸热效率实验[J]. 化工学报, 2018, 69(5): 2007-2013.

ZHANG Nan, LI Nianping, CUI Haijiao, LI Shengbing. Experiment on heat absorption efficiency of non-packed heat source tower[J]. CIESC Journal, 2018, 69(5): 2007-2013.

参考文献 33

[1]	殷平. 南方供暖的现状和路径[J]. 暖通空调, 2013, 43(6):50-57. YIN P. Present situation and proposed approach of heating in southern China[J]. HV&AC, 2013, 43(6):50-57.
[2]	余丽霞, 付祥钊, 肖益民. 空气源热泵在长江流域的气候适宜性研究[J]. 暖通空调, 2011, 41(6):96-99. YU L X, FU X Z, XIAO Y M. Climate suitability of air-source heat pumps in Yangtze valley[J]. HV&AC, 2011, 41(6):96-99.
[3]	李丹, 张华玲. 南方供暖需求现状及技术分析[J]. 制冷与空调, 2013, 27(6):621-625. LI D, ZHANG H L. The demand status and technology analysis of southern heating[J]. Refrigeration and Air Conditioning, 2013, 27(6):621-625.
[4]	LIU J D, SUN Y Y, WAN G W, et al. Performance evaluation of air source heat pump under unnecessary defrosting phenomena for nine typical cities in China[J]. International Journal of Refrigeration, 2017, 74:383-396.
[5]	宋应乾, 马宏权, 龙惟定. 能源塔热泵技术在空调工程中的应用与分析[J]. 暖通空调, 2011, 21(4):20-23. SONG Y Q, MA H Q, LONG W D. Application and analysis of energy tower heat pump technology in air conditioning engineering[J]. HV&AC, 2011, 21(4):20-23.
[6]	梁彩华, 文先太, 张小松. 基于热源塔的热泵系统构建与实验[J]. 化工学报, 2010, 61(S2):142-146. LIANG C H, WEN X T, ZHANG X S. Construction and experimental research on heat pump system based on heat-source tower[J]. CIESC Journal, 2010, 61(S2):142-146.
[7]	KHAMIS M M, HASSAB M A. Innovative correlation for calculating thermal performance of counterflow wet-cooling tower[J]. Energy, 2014, 74:855-862.
[8]	AL-BASSAM E, MAHESHWARI G P. A new scheme for cooling tower water conservation in arid-zone countries[J]. Energy, 2011, 36:3985-3991.
[9]	GOUDARZI M A. Proposing a new technique to enhance thermal performance and reduce structural design wind loads for natural drought cooling towers[J]. Energy, 2013, 62:164-172.
[10]	LEMOUARI M, BOUMAZA M, KAABI A. Experimental investigation of the hydraulic characteristics of a counter flow wet cooling tower[J]. Energy, 2011, 36:5815-5823.
[11]	ASVAPOOSITKUL W, KUANSATHAN M. Comparative evaluation of hybrid (dry/wet) cooling tower performance[J]. Appl. Therm. Eng., 2014, 71:83-93.
[12]	JIANG J J, LIU X H, JIANG Y. Experimental and numerical analysis of a cross-flow closed wet cooling tower[J]. Appl. Therm. Eng., 2013, 61:678-689.
[13]	AL-WAKEDA R, BEHNIAB M. CFD simulation of wet cooling towers[J]. Applied Thermal Engineering, 2006, 26(4):382-395.
[14]	QI X N, LIU Z Y, LI D D. Numerical simulation of shower cooling tower based on artificial neural network[J]. Energy Convers. Manage., 2008, 49:724-732.
[15]	QI X N, LIU Z Y. Further investigation on the performance of a shower cooling tower[J]. Energy Convers. Manage., 2008, 49:570-577.
[16]	QI X N, LIU Y Q, GUO Q J, et al. Performance prediction of a shower cooling tower using wavelet neural network[J]. Applied Thermal Engineering, 2016, 108:475-485.
[17]	CHENG J L, LI N P, WANG K. Study of heat-source-tower heat pump system efficiency[J]. Procedia Engineering, 2015, 121:915-921.
[18]	CHENG J L, ZOU S H, CHEN S Q. Application research on the closed-loop heat-source-tower heat pump air conditioning system in hot-summer and cold-winter zone[J]. Procedia Engineering, 2015, 121:922-929.
[19]	CUI H J, LI N P, PENG J Q. Study on the dynamic and thermal performances of a reversibly used cooling tower with upward spraying[J]. Energy, 2016, 96:268-277.
[20]	CUI H J, LI N P, PENG J Q. et al. Modeling the particle scavenging and thermal efficiencies of a heat absorbing scrubber[J]. Building and Environment, 2017, 111:218-227.
[21]	CUI H J, LI N P, WANG X L, et al. Optimization of reversibly used cooling tower with downward spraying[J]. Energy, 2017, 127:30-43.
[22]	文先太, 梁彩华, 张小松, 等. 热源塔传质特性的分析和实验研究[J]. 化工学报, 2011, 62(4):901-907. WEN X T, LIANG C H, ZHANG X S, et al. Mass transfer characteristics in heat-source tower[J]. CIESC Journal, 2011, 62(4):901-907.
[23]	文先太, 梁彩华, 张小松, 等. 热源塔液气比优化分析与实验研究[J]. 东南大学学报(自然科学版), 2011, 41(4):767-771. WEN X T, LIANG C H, ZHANG X S, et al. Experimental analysis of optimized liquid to gas ratio in heat-source tower[J]. Journal of Southeast University (Natural Science Edition), 2011, 41(4):767-771.
[24]	WEN X T, LIANG C H, ZHANG X S. Experimental study on heat transfer coefficient between air and liquid in the cross-flow heat-source tower[J]. Building and Environment, 2012, 57:205-213.
[25]	夏燚, 孙立镖, 梁彩华, 等. 具有预凝功能的新型热源塔运行性能的实验研究[J]. 制冷学报, 2015, 36(6):47-51. XIA Y, SUN L B, LIANG C H, et al. Experimental study on the performance characteristic of a new-type heat-source tower with pre-condensation function[J]. Journal of Refrigeration, 2015, 36(6):47-51.
[26]	TAN K X, DENG S M. A numerical analysis of heat and mass transfer inside a reversibly used water cooling tower[J]. Building and Environment, 2003, 38(1):91-97.
[27]	TAN K X, DENG S M. A method for evaluating the heat and mass transfer characteristics in a reversibly used water cooling tower (RUWCT) for heat recovery[J]. International Journal of Refrigeration, 2001, 25(5):552-561.
[28]	TAN K X, DENG S M. A simulation study on a water chiller complete with a desuperheater and a reversibly used water cooling tower (RUWCT) for service hot water generation[J]. Building and Environment, 2002, 37(7):741-751.
[29]	WU J S, ZHANG G Q, ZHANG Q. et al. Artificial neural network analysis of the performance characteristics of a reversibly used cooling tower under cross flow conditions for heat pump heating system in winter[J]. Energy and Buildings, 2011, 43(7):1685-1693.
[30]	ZHENG W Y, ZHU D S, ZHOU G Y, et al. Thermal performance analysis of closed wet cooling towers under both unsaturated and supersaturated conditions[J]. Int. J. Heat Mass Transfer, 2012, 55:7803-7811.
[31]	KLOPPERS J C, KRÖGER D G. A critical investigation into the heat and mass transfer analysis of counterflow wet-cooling towers[J]. Int., J. Heat Mass Transfer, 2005, 48:765-777.
[32]	KLIMANEK A, BIA?ECKI R A. Solution of heat and mass transfer in counterflow wet-cooling tower fills[J]. International Communications in Heat and Mass Transfer, 2009, 36:547-553.
[33]	李胜兵, 李念平, 崔海蛟, 等. 低温高湿工况下热源塔换热特性实验研究[J]. 科学技术与工程, 2017, 17(5):271-275. LI S B, LI N P, CUI H J, et al. Experimental study on heat transfer characteristics of heat source tower under low temperature and high humidity conditions[J]. Science Technology and Engineering, 2017, 17(5):271-275.