移動辦公室之區域性空調系統之熱流場模擬分析

Thermofluid Simulation and Analysis of Regional Air-conditioning System inside a Mobile Office

陳孟甫(Meng-Fu Cheng)

指導教授 ： 黃國修

國立臺北科技大學/機電學院/車輛工程系所/碩士(2009年)

摘要

汽車是人類日常生活中不可或缺的交通工具之ㄧ，而現代生活水平的提升下，汽車如何能更佳的舒適、更多的人性化以及更好的節能效果是所有車輛工程師所努力的目標。本研究主要是運用空氣流管理（Air Flow Management）之技術來控制車艙流場結構使車艙內形成區域性空調，駕駛者及乘客皆能依照個人需求來控制該區域之溫度，來形成個人化舒適空間及減少空調系統不必要的能源消耗為本研究目的。利用計算流體力學(Computational Fluid Dynamics，簡稱CFD)的數值分析，可模擬出上述這些複雜的物理變動現象並作有系統性的分析，本文將針對Ford E350經改裝成移動辦公室之車艙模型進行氣流模擬，評估改變後之出、吸風口位置及參數設定來控制車艙流場結構，研究方法利用CFD軟體- FLUENT求解出車艙內部流場的溫度、壓力及速度等分佈，並且考慮太陽輻射熱、人員生理熱及精密電子設備熱源等實際狀況。由模擬結果可得知，改變車艙的進、出風口配置後，於車艙內能有效形成獨立的空氣流場。

關鍵字

空氣流管理 ； 區域性空調 ； 計算流體力學 ； 氣流場結構

並列摘要

Vehicle is essential to the daily life of the people. How to make vehicle more comfortable, humanization, and energy efficient is always the dream of the vehicle engineers. This study utilized the technique of air flow management to control the air flow structures so that the inside of the cabin would form regional air-conditioning. The purpose of this study was to discuss the each passenger could control the temperature according to their individual needs, thus the air conditioning system could reducing unnecessary energy consumption. Through the numerical analysis of Computational Fluid Dynamics (CFD), these complicated physical fluctuating phenomenon mentioned above can be simulated and analyzed systematically. This study will emphasize on the refitted Ford E350 cabin model to carry the simulating analysis of airflow out, assessing the influence of the disposing variation of the internal airflow after refit on the comfort of passengers. The research approach is to use CFD software- FLUENT to figure out the temperature, pressure, and velocity of the internal airflow inside the cabin of the car, considering the practical condition of the solar radiant heat, the physiological heat of personnel, and heat source of the precise electron equipment. From the simulation results we could know that, after changing the allocation of the cabin’s inlets and outlets, the inside of the cabin could effectively form independent air flows.

並列關鍵字

Air Flow Management ； Regional Air-Conditioning ； Computational Fluid Dynamics ； Airflow Structure

參考文獻

[13] 張烔堡、黃志達、高浚富、李俊承，「台灣地區車輛最大空調負載與冷凍能力研究」，車輛工程學刊，2007，第19-36頁。

[19] 張育源，移動辦公室內熱流場模擬分析之技術，碩士論文，國立台北科技大學，台北，民國97年。

[5] K. Hagstrom, E. Sandberg, H. Koskela, and T. Hantalampi, ″Classification for the room air conditioning strategies,″ Building and Environment, vol.35, 2000, pp.699-707.

[6] A. Fujita, J. Kanemaru, H. Nakagawa, and Y. Ozeki, ″Numerical Simulation to Predict the Thermal Environment inside a Car Cabin,″ JSAE, 2001.

[7] L. Huang and T. Han, ″Validation of 3-D Passenger Compartment Hot Soak and Cool-Down Analysis for Virtual Thermal Comfort Engineering,″ SAE Paper 2002-01-1304, 2002.