R-134a脉动热管相变蓄放热实验研究

doi:10.11949/0438-1157.20230172

摘要/Abstract

摘要：

为研究低温工质对脉动热管相变蓄热器的影响，搭建了脉动热管相变蓄放热试验台。实验选用的低温工质为R-134a，相变材料为石蜡，蓄热器由一组自主设计的脉动热管组成。实验结果表明，采用R-134a作为工质能够实现脉动热管蓄热器的正常蓄热和放热。在蓄热过程中，加热功率的增加会减少蓄热时间，但同时也会增加蓄热器内的最大温差；在放热过程中，冷却水温度的降低会减少石蜡的凝固时间，当水温由20℃变为5℃，石蜡的凝固时间缩短了34.8%。冷却水流量的增加也会减少石蜡的凝固时间，水流量由10 L/h变为40 L/h，凝固时间缩短了9.5%。在约3 h的放热实验后，相变材料的温度与室温接近。

关键词: 脉动热管, 相变, 强化传热, 蓄热器, 石蜡

Abstract:

In order to study the influence of low temperature working medium on the pulsating heat pipe phase change heat accumulator, a test bed for pulsating heat pipe phase change heat storage and release was built. The cryogenic working medium selected in the experiment is R-134a, the phase change material is paraffin, and the heat accumulator is composed of a group of self-designed pulsating heat pipes. The experimental results show that the normal heat storage and heat release of pulsating heat pipe accumulator can be realized by using R-134a as working medium. In the process of heat storage, the increase of heating power will reduce the heat storage time, but also increase the maximum temperature difference in the heat storage. In the process of heat release, the decrease of cooling water temperature can reduce the solidification time of paraffin. When the water temperature changes from 20℃ to 5℃, the solidification time of paraffin is shortened by 34.8%. The increase of cooling water flow also reduces the setting time of paraffin wax. The water flow is changed from 10 L/h to 40 L/h, and the setting time is shortened by 9.5%. After about three hours of exothermic experiment, the temperature of the phase change material was close to room temperature.

Key words: pulsating heat pipe, phase change, enhanced heat transfer, heat accumulator, paraffin

中图分类号:

TK 02

张双星, 刘舫辰, 张义飞, 杜文静. R-134a脉动热管相变蓄放热实验研究[J]. 化工学报, 2023, 74(S1): 165-171.

Shuangxing ZHANG, Fangchen LIU, Yifei ZHANG, Wenjing DU. Experimental study on phase change heat storage and release performance of R-134a pulsating heat pipe[J]. CIESC Journal, 2023, 74(S1): 165-171.

图/表 11

图1 脉动热管相变蓄放热实验台示意图1—low-temperature thermostatic bath; 2—micro flowmeter; 3—float flowmeter; 4—pulsating heat pipe phase change accumulator; 5—alternating current power supply; 6—computer; 7—paperless recorder

Fig.1 Schematic diagram of phase change storage and release experimental platform for pulsating heat pipe

表1 相关设备的详细参数

Table 1 Detailed parameters of related devices

设备名称	设备参数
低温恒温槽	厂家：LAUDA，型号：WKL1000,精度：±0.5℃
无纸记录仪	厂家：YOKOGAWA，型号：GX20，精度：±0.1℃
交流电源	厂家：国电亚光电源有限公司，型号：HYB1760-0.5 KVA，精度：±0.1 A，±0.1V
电子流量计	厂家：上海基深仪器仪表有限公司，型号：M6Y，精度：±0.5 L/h
T型热电偶	测温范围：-200~350℃，精度：±0.5℃

图2 蓄热器尺寸和测温点位置

Fig.2 Dimensions of heat accumulator and location of temperature measuring points

图3 相变过程温度变化

Fig.3 Temperature change during phase transition

表2 加热功率对融化时间的影响

Table 2 Influence of heating power on melting time

加热功率/W	相变时间/min	功率变化率/%	相变时间变化率/%
100	103	0	0
150	73	50	29.1
200	50.5	100	51.0

图4 温差变化趋势

Fig.4 Trend of temperature difference

图5 放热过程温度分布

Fig.5 Temperature distribution of exothermic process

图6 冷却水温对放热过程的影响(点15)

Fig.6 Influence of cooling water temperature on exothermic process (point 15)

图7 不同冷却温度下的凝固时间与输出能量

Fig.7 Solidification time and output energy at different cooling temperatures

图8 冷却水温对放热过程的影响(点15)

Fig.8 Influence of cooling water temperature on exothermic process (point 15)

图9 不同冷却流量下的凝固时间与输出能量

Fig.9 Solidification time and output energy at different cooling flows

参考文献 30

1	屈健. 脉动热管技术研究及应用进展[J]. 化工进展, 2013, 32(1): 33-41.
	Qu J. Oscillating heat pipes: state of the art and applications[J]. Chemical Industry and Engineering Progress, 2013, 32(1): 33-41.
2	Motahar S, Khodabandeh R. Experimental study on the melting and solidification of a phase change material enhanced by heat pipe[J]. International Communications in Heat and Mass Transfer, 2016, 73: 1-6.
3	Robak C W, Bergman T L, Faghri A. Enhancement of latent heat energy storage using embedded heat pipes[J]. International Journal of Heat and Mass Transfer, 2011, 54(15/16): 3476-3484.
4	Zhang X, Wu S C, Zhang C B, et al. Dynamic heat transfer characteristics of gravity heat pipe with heat storage[J]. Journal of Energy Storage, 2022, 53: 105134.
5	Jung E G, Boo J H. Thermal analytical model of latent thermal storage with heat pipe heat exchanger for concentrated solar power[J]. Solar Energy, 2014, 102: 318-332.
6	Amini A, Miller J, Jouhara H. An investigation into the use of the heat pipe technology in thermal energy storage heat exchangers[J]. Energy, 2017, 136: 163-172.
7	Ladekar C, Choudhary S K, Khandare S S. Experimental investigation for the optimization of heat pipe performance in latent heat thermal storage[J]. Journal of Mechanical Science and Technology, 2017, 31(6): 2627-2634.
8	Akachi H. Structure of a heat pipe: US4921041[P]. 1990-05-01.
9	Akachi H. Structure of micro-heat pipe: US5219020[P]. 1993-06-15.
10	周跃国. 脉动热管启动及运行特性的可视化实验研究[D]. 重庆: 重庆大学, 2010.
	Zhou Y G. Visual experiment study on start-up and operating characteristics of pulsating heat pipe[D]. Chongqing: Chongqing University, 2010.
11	杨蔚原, 张正芳, 马同泽. 脉动热管运行的可视化实验研究[J]. 工程热物理学报, 2001, 22(S1): 117-120.
	Yang W Y, Zhang Z F, Ma T Z. Flow visualization of looped pulsating heat pipe[J]. Journal of Engineering Thermophysics, 2001, 22(S1): 117-120.
12	曹小林, 席战利, 周晋, 等. 脉动热管运行可视化及传热与流动特性的实验研究[J]. 热能动力工程, 2004, 19(4): 411-415, 441.
	Cao X L, Xi Z L, Zhou J, et al. Experimental investigation of the visualization of pulsating heat-pipe operation as well as heat transfer and flow characteristics[J]. Journal of Engineering for Thermal Energy and Power, 2004, 19(4): 411-415, 441.
13	冼海珍, 刘登瀛, 杨勇平, 等. 一种用振荡流热管做吸热内管的太阳能真空玻璃集热管: 101021365A[P]. 2008-12-31.
	Liu X H. Solar energy vacuum glass heat accumulating tube utilizing oscillating flow heat tube as heat internal tube: 101021365A[P]. 2008-12-31.
14	郭良安. 脉动热管的实验研究[D]. 大连: 大连海事大学, 2011.
	Guo L A. Experimental investigation of oscillating heat pipes[D]. Dalian: Dalian Maritime University, 2011.
15	Charoensawan P, Khandekar S, Groll M, et al. Closed loop pulsating heat pipes[J]. Applied Thermal Engineering, 2003, 23(16): 2009-2020.
16	Khandekar S, Charoensawan P, Groll M, et al. Closed loop pulsating heat pipes (Part B): Visualization and semi-empirical modeling[J]. Applied Thermal Engineering, 2003, 23(16): 2021-2033.
17	Ayel V, Araneo L, Scalambra A, et al. Experimental study of a closed loop flat plate pulsating heat pipe under a varying gravity force[J]. International Journal of Thermal Sciences, 2015, 96: 23-34.
18	Mangini D, Mameli M, Georgoulas A, et al. A pulsating heat pipe for space applications: ground and microgravity experiments[J]. International Journal of Thermal Sciences, 2015, 95: 53-63.
19	Mameli M, Manno V, Filippeschi S, et al. Thermal instability of a closed loop pulsating heat pipe: combined effect of orientation and filling ratio[J]. Experimental Thermal and Fluid Science, 2014, 59: 222-229.
20	Mameli M, Araneo L, Filippeschi S, et al. Thermal response of a closed loop pulsating heat pipe under a varying gravity force[J]. International Journal of Thermal Sciences, 2014, 80: 11-22.
21	Iwata N, Ogawa H, Miyazaki Y. Maximum heat transfer and operating temperature of oscillating heat pipe[J]. Journal of Heat Transfer, 2016, 138(12): 122002.
22	Zhao J T, Rao Z H, Liu C Z, et al. Experimental investigation on thermal performance of phase change material coupled with closed-loop oscillating heat pipe (PCM/CLOHP) used in thermal management[J]. Applied Thermal Engineering, 2016, 93: 90-100.
23	赵佳腾. 面向储热的脉动热管流动与传热特性及强化机理研究[D]. 徐州: 中国矿业大学, 2018.
	Zhao J T. Characteristics of flow and heat transfer and enhancement mechanism of oscillating heat pipe for thermal energy storage[D]. Xuzhou: China University of Mining and Technology, 2018.
24	Khalilmoghadam P, Rajabi-Ghahnavieh A, Shafii M B. A novel energy storage system for latent heat recovery in solar still using phase change material and pulsating heat pipe[J]. Renewable Energy, 2021, 163: 2115-2127.
25	Zhao J T, Jiang W, Liu C Z, et al. Thermal performance enhancement of an oscillating heat pipe with external expansion structure for thermal energy recovery and storage[J]. Applied Thermal Engineering, 2019, 155: 667-675.
26	罗孝学, 章学来, 邹长贞, 等. 脉动热管相变蓄热器放热性能实验分析[J]. 热力发电, 2018, 47(4): 123-130.
	Luo X X, Zhang X L, Zou C Z, et al. Experimental analysis on heat release performance of pulsating heat pipe phase change heat accumulator[J]. Thermal Power Generation, 2018, 47(4): 123-130.
27	罗孝学, 章学来, 华维三, 等. 脉动热管相变蓄热器蓄热实验分析[J]. 化工学报, 2017, 68(7): 2722-2729.
	Luo X X, Zhang X L, Hua W S, et al. Experimental analysis on heat storage of pulsating heat pipe phase change heat accumulator[J]. CIESC Journal, 2017, 68(7): 2722-2729.
28	罗孝学, 章学来, 华维三, 等. 一种脉动热管相变蓄放热试验装置的设计[J]. 流体机械, 2017, 45(4): 63-67.
	Luo X X, Zhang X L, Hua W S, et al. Design of pulsating heat pipe type phase change thermal storage experimental device[J]. Fluid Machinery, 2017, 45(4): 63-67.
29	罗孝学, 章学来, 华维三, 等. 应用于相变蓄热的脉动热管换热器在不同倾角下放热性能的试验研究[J]. 流体机械, 2017, 45(7): 62-67.
	Luo X X, Zhang X L, Hua W S, et al. Experimental study on heat transfer performance of pulsating heat pipe heat exchanger with phase change heat storage at different inclination[J]. Fluid Machinery, 2017, 45(7): 62-67.
30	Ling Y Z, Zhang X S, Wang F, et al. Performance study of phase change materials coupled with three-dimensional oscillating heat pipes with different structures for electronic cooling[J]. Renewable Energy, 2020, 154: 636-649.

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