针对某间歇剧烈放热的设备,设计了一套某带相变蓄冷换热器的泵驱两相环路热控系统,并对相变蓄冷换热器进行优化设计.经过比较,拟采用石蜡与膨胀石墨的混合物为相变材料(PCM),在大大提高材料热导率时,又可保持较大的相变潜热.为了提高换热效率,应尽量避免PCM的融化距离过深,同时应优先减小外管壁与PCM间的接触热阻.相变蓄冷换热器的最优管间距与蓄冷时间、冷凝传热系数和接触表面传热系数等因素密切相关,本相变蓄冷器的最优管间距选为30 mm.通过动态模拟,可以得到相变蓄热换热器内不同时间的温度分布,确认所设计的相变蓄冷换热器可以满足要求,并为储液器的设计提供了相变蓄热换热器内不同时间的空泡率.
参考文献
| [1] | Murat Kenisarin;Khamid Mahkamov .Solar energy storage using phase change materials[J].Renewable & sustainable energy reviews,2007(9):1913-1965. |
| [2] | F. L. Tan;C. P. Tso .Cooling of mobile electronic devices using phase change materials[J].Applied thermal engineering: Design, processes, equipment, economics,2004(2/3):159-169. |
| [3] | Belen Zalba;Jose M Marin;Luisa F. Cabeza;Harald Mehling .Review on thermal energy storage with phase change: materials, heat transfer analysis and applications[J].Applied thermal engineering: Design, processes, equipment, economics,2003(3):251-283. |
| [4] | Wei-Biao Ye;Dong-Sheng Zhu;Nan Wang .Numerical simulation on phase-change thermal storage/release in a plate-fin unit[J].Applied thermal engineering: Design, processes, equipment, economics,2011(17/18):3871-3884. |
| [5] | Yajuan Zhong;Sizhong Li;Xinghai Wei .Heat transfer enhancement of paraffin wax using compressed expanded natural graphite for thermal energy storage[J].Carbon: An International Journal Sponsored by the American Carbon Society,2010(1):300-304. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%