化工学报 ›› 2023, Vol. 74 ›› Issue (S1): 165-171.DOI: 10.11949/0438-1157.20230172
收稿日期:
2023-02-27
修回日期:
2023-03-29
出版日期:
2023-06-05
发布日期:
2023-09-27
通讯作者:
杜文静
作者简介:
张双星(2000—),男,硕士研究生,2663928761@qq.com
Shuangxing ZHANG(), Fangchen LIU, Yifei ZHANG, Wenjing DU()
Received:
2023-02-27
Revised:
2023-03-29
Online:
2023-06-05
Published:
2023-09-27
Contact:
Wenjing DU
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。
中图分类号:
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
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℃ |
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℃ |
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 |
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 |
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