間接蒸發式冷卻技術應用於VRF系統之節能分析與系統模擬

Energy Saving Analysis and System Simulation of VRF Systems Utilizing Indirect Evaporative Cooling Technology

郭議聯(Yi-Lien Kuo)

指導教授 ： 柯明村

國立臺北科技大學/機電學院/冷凍空調工程系所/碩士(2012年)

摘要

本研究將間接蒸發式冷卻模組應用於VRF系統進行實驗分析，藉由實驗數據結果，進而比較間接蒸發式冷卻與氣冷式之間的性能與節能量，以及探討於外氣溫度28 ℃、31 ℃、34 ℃與37 ℃條件下實驗與模擬之誤差值。於模擬部份，利用數學建模方式將熱交換器模型、壓縮機性能迴歸方程式、蒸發器與膨脹閥模型等，以Excel內建之VBA撰寫蒸發式冷卻系統熱傳與性能分析軟體。
研究結果得知，使用間接蒸發冷卻模組可明顯降低耗電與提高EER，以及在節能量分析時，節能百分比可達+11.03%，於實驗與模擬進行誤差分析時，誤差值可達10%內。由上述結果可得知間接蒸發式冷卻模組能有效提升VRF系統之性能，以及驗證模擬軟體之可靠性。

關鍵字

VRF ； 間接蒸發式冷卻 ； 系統模擬

並列摘要

In this study, we performed experimental analysis by applying indirect evaporative cooling module to VRF system experiment. Based on the experimental results, we further compared the performance and energy saving between indirect evaporative cooling and air cooling, and analyzed the errors of experiment and simulation at outside air temperatures of 28 ℃, 31 ℃, 34 ℃and 37 ℃. For simulation, the heat exchanger model, the regression equation of the compressor performance, the evaporator model and expansion valve model are established by mathematical modeling, and the VBA built in Microsoft EXCEL is used to program the software for heat transferring and performance analysis of evaporative cooling system.
The results show that the indirect evaporative cooling module can reduce energy consumption significantly and enhance EER. As to the energy saving analysis, the indirect evaporative cooling module can save energy up to +11.03%. For the error analysises of experiment and simulation, the error value is less than 10%. From the above results, the indirect evaporative cooling module can effectively enhance the performance of VRF system and verify the reliability of simulation software.

並列關鍵字

VRF ； Indirect Evaporative Cooling ； System Simulation

參考文獻

[5] 黃清福，「使用微霧技術對VRF系統節能效果之分析-以辦公室為例」，國立臺北科技大學碩士論文，民99年。

[3] Laeun , K. , Yunho , H. , “Field performance measurements of a VRF system with sub-cooler in educational offices for the cooling season” , Center for Environmental Energy Engineering , University of Maryland , College Park , USA , 2012 , pp. 300–305.

[4] 曾薇甄，「變頻空調機在不同環境下之控制策略」，國立中央大學碩士論文，民100年。

[6] Aprea , C. , Mastrullo , R. , and Renno , C. , “Determination of the Comperssor Optimal Working Conditions” , International Journal of Applied Thermal Engineering , Vol. 29 , pp. 1991-1997 , 2009.

[7] 李瑞淋，「變冷媒系統運用於醫療場所之空調節能效益評估分析」，國立臺北科技大學碩士論文，民97年。