氣-液熱管熱交換器之數值模擬

Numerical analysis of Gas to Liquid Heat Pipe Heat Exchanger

古佩笛(Pratik Prakash Gupta)

指導教授 ： 康尚文

淡江大學/工學院/機械與機電工程學系碩士班/碩士(2019年)

https://doi.org/10.6846/TKU.2019.00128

摘要

熱管熱交換器是非常可靠和有效的裝置。本研究的目的是確定熱管式換熱器在不同輸入條件下的行為，以便對各種情況進行優化和理解。熱交換器採用用於實驗研究的模型進行設計，並用ANSYS Fluent進行模擬，輸入條件與實驗條件相同，以比較和分析其行為。由於環境沒有損失，模擬模型顯示出比實驗模型更好的效率和傳熱，但顯示出相同的趨勢。與0.577的實驗相比，數值模型的最大有效性為0.977。然後通過擴展蒸發器部分的面積並通過向熱管蒸發器添加不同區域的翅片來增強模擬設計。蒸發器部分區域增量和翅片的增加都增加了傳熱，翅片面積增量進一步提高了性能。加入翅片的最大傳熱量為853.3685 W，在相同輸入條件下增加19.7％。

關鍵字

数值分析 ； Fluent ； 鳍

並列摘要

The heat pipe heat exchanger is a very reliable and efficient device. The purpose of this study is to determine the behavior of heat pipe operated heat exchanger in different input conditions to optimize and understand for putting in various situation. The heat exchanger is designed with the model used for experimental research and simulated with ANSYS Fluent with same input condition with experimental conditions to compare and analyze the behavior. The model for simulation shows a better effectiveness and heat transfer then the experimental model due to no loss in the environment, but showed the same trends. The numerical model has maximum effectiveness of 0.977 compared to 0.577 of experiment. The simulation design is then enhanced by extending the area of evaporator section and by adding fins of different areas to the heat pipe evaporator. The heat transfer is increased for both the evaporator section area increment and addition of fins, with the fin area increment further enhanced the performance. The maximum heat transfer with fins added is 853.3685 W, which is 19.7% increase with same input condition.

並列關鍵字

Numerical analysis ； Fluent ； Fins

參考文獻

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