建築物佈置之空調室外機散熱模擬分析

Thermal Analysis Simulation of Outdoor Unit of Air Conditioner Distributing on the Building

林大程(Da-Chen Lin)

指導教授 ： 李文興

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2013年)

摘要

本文主要是模擬群樓間室外機散熱分析，現代人因講究建築美觀，往往都將分離式冷氣機的室外機安裝在建築物的陽台底下或建築物後方的防火巷內，有些都市更新計畫與新建的大樓甚至將冷氣室外機安裝的地方加設柵欄圍籬以達到建築物的視覺美觀，導致室外機在炎熱的夏天會造成散熱不良的現象。
本文就選取一個實際的案例，討論案例是個三棟住宅公寓大樓的小區塊，每一棟為80公尺高，建築師在做設計時就將室外機個別安裝在大樓的後方，建築物之朝向卻又剛好與當地常態風相反，導致迎面風完全受到建築物遮擋，建築物後方的室外機就會發生散熱不良的現象。
研究方法運用CFD (Computational Fluid Dynamics)數值解析方式，採用計算流體力學模擬軟體Ansys 14.0。模擬調整參數為建築物的朝向，棟距，經由不同的建築物擺設方式來探討冷氣機室外機的散熱情形，並加以評估。
經本研究結果得知，最差的建築布置方式與最佳的做比較平均每一台室外機回風溫度差達4.46℃。

關鍵字

室外機 ； CFD ； 模擬

並列摘要

In this thesis, the main issue is simulating the air-conditioning outside unit heat sink analysis between other buildings , because modern focus on architectural aesthetics, so they usually install air-conditioning outside unit in the balcony of the building or fire alley behind the building. Even some Urban renewal plan and new buildings add barriers and fences on the place where they install the air-conditioning outside unit in order to achieve the visual appearance of building, result in air-conditioning outside unit get the phenomenon of poor heat sink in summer.
The case is a small area of three residential condominiums, each one is 80 meters high. Each air-conditioning outside unit was installed behind the building when the architect designed it. The orientation of the building is opposite with the normal local wind, result in head wind obscured completely by the building, so the air-conditioning outside unit behind the building occurs the phenomenon of poor heat sink.
This research uses CFD (Computational Fluid Dynamics) numerical analysis method, using the computational fluid dynamics simulation software Ansys 14.0. Simulation parameters tuned for the orientation of the building, and distance of the building. Through different buildings arrangement ways to explore the air-conditioning outside unit back air heat sink situations and evaluated it.
The results of this research that the worst architectural arrangement compared with the best one. Average of each air-conditioning outside unit back air temperature difference is 4.46℃.

並列關鍵字

air-conditioning outside unit ； CFD ； Simulation

參考文獻

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