相變化材料封裝方法與其應用於熱交換器之分析

The analysis of the PCM packing method and its performance for heat transfer exchanger

吳宗南(Tsung-Nan Wu)

指導教授 ： 陳長仁

崑山科技大學/工程學院/機械工程研究所/碩士(2011年)

https://doi.org/10.6828/KSU.2011.00105

摘要

本研究以不同封裝方法搭配相變化儲能材料，來改善熱交換器的熱效率，並使熱交換器保持恆溫狀態，進而減少熱損失或避免溫度過高而造成系統當機的現象。
實驗中使用示差掃描熱量分析儀及熱疲勞測試儀求得不同熔點 (4℃、19℃、45℃、49℃、57℃、65℃)相變化儲能材料之特性，並以下列不同容器與材質進行封裝：I形容器(PE)、船形容器(ABS)、方形容器(HDPE)、低密度聚乙烯包裝袋(LDPE)、鋁箔包裝袋(AL)；最後將適合的材料以不同型式應用於泡腳桶、移動式點焊機冷卻器和太陽能熱水器儲水桶，並以數值量測與軟體互補方式分析。
研究發現，若要提高該熱交換之效率，相變化儲能材料應用於泡腳桶，可考慮使用多種不同熔點溫度(接近工作溫度)置於該系統，在4公升泡腳容器，倘若包裝材料之厚度不變，重量平均增加100g可延長該桶內溫度5分鐘左右；相變化儲能材料應用於移動式點焊機冷卻器，在使用包裝容器，選用I形容器(PE)可得到最佳熱效率，在4公升的冷卻水容器，其結果為使用相變化儲能材料30分鐘之後，冷卻器水溫比原始熱交換器溫度低10.7℃；相變化儲能材料應用於太陽能熱水器儲能桶，在冬季太陽下山後，儲能桶內部溫度會因環境低溫影響而快速下降，模擬結果儲能桶內溫度變化從60℃至40℃，因使用相變化儲能材料，可以延長桶內溫度的時間，可以達到減能減碳的目地。

關鍵字

相變化儲能材料 ； 不同容器 ； 熱交換器

並列摘要

In this study, different packaging methods with phase change energy storage material, the heat exchanger to improve efficiency and heat exchanger to maintain a constant temperature, thereby reducing heat loss or to avoid the high temperature caused a system crash phenomenon.
Experiment measured using differential scanning thermal analyzer and thermal fatigue tester obtain different melting point (4 ℃, 19 ℃, 45 ℃, 49 ℃, 57 ℃, 65 ℃) characteristics of phase change energy storage materials and containers with the following different material for packaging: I describe the device (PE), boat-shaped container (ABS), a square container (HDPE), low density polyethylene bags (LDPE), aluminum foil bags (AL); Finally, in order to fit different types of materials used in feet barrel, portable spot welder cooler and solar water heater storage tank, and a numerical measurement and analysis software in a complementary manner.
Found to increase the efficiency of heat exchange, phase change energy storage materials used in feet barrel, consider using a variety of different melting temperatures (close to the operating temperature) placed in the system, in 4 liters of feet containers, packaging materials, if of the same thickness, the average weight of 100g to extend the barrel temperature increased about 5 minutes; phase change energy storage materials used in portable spot welder cooler in the use of containers, I described the device used (PE) the best available thermal efficiency, 4 liters of cooling water in the container, and the results for the use of phase change energy storage material 30 minutes after cooler heat exchanger temperature is lower than the original water temperature 10.7 ℃; phase change energy storage materials used in solar water heaters, storage barrels, In the winter the sun goes down, the internal temperature of storage barrels due to environmental impact and rapid temperature drop, the simulation results storage barrel temperature from 60 ℃ to 40 ℃, the use of phase change energy storage materials, the time may be extended barrel temperature can be reduced to achieve the goal to reduce carbon emissions.

並列關鍵字

Phase Change Material ； Different Container ； Heat Exchange System

參考文獻

[21] 黃俊偉，”相變材料應用於多溫域共構之節能運送貨櫃”，碩士論文，崑山科技大學機械工程系，民國九十九年六月。

[27] 郭儒家、陶惟翰，”共晶蓄冷材料於低溫物流系統之研究”，

[35] 謝旭峰，”電熱式與相變化儲熱式觸媒轉化器應用於機車冷啟動之污染排放改善探討”，碩士論文，崑山科技大學機械工程系，民國九十九年七月。

[2] K. E. Kasza, and M. M. Chen, ”Improvement of the Performance of Solar Energy or Waste Heat Utilization Systems by using Phase Change Slurry as an Enhanced Heat-Transfer Storage fluid,” ASMEJ. Solar Energy Engineering, Vol. 107, pp229-236, 1985.

[3] A. F. Regin, S. C. Solamki and J. S. Saini,“Heat transfer characteristics of thermal energy storage system using PCM capsules: A review,” Renewable and Sustainable Energy Reviews, Dec. 2008, pp. 2438-2458.