The Characteristics of Waste Heat and Energy Efficient of Air Conditioning Outdoor Units : Part 3-Analysis of the Thermal Environment around Air Conditioning Outdoor Units by Means of CFD

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  • 空調用屋外機の排熱特性及びエネルギー効率に関する研究 : 第3報-CFDによる屋外機周辺の熱環境解析
  • クウチョウヨウ オクガイキ ノ ハイネツ トクセイ オヨビ エネルギー コウリツ ニ カンスル ケンキュウ ダイ3ポウ CFD ニ ヨル オクガイキ シュウヘン ノ ネツ カンキョウ カイセキ

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Abstract

Recently, researches aiming at solving the influence which the artificial waste heat, especially, waste heat from air conditioning devices has on urban environment and urban canyon are made strenuously. In this research, examination has performed about the influence air conditioning waste heat has on the surroundings of a building. In Part 1, temperature distribution around the dry and wet cooled outdoor unit were measured. As a result, it was shown that temperature around dry cooled out door unit became temperature high on the whole rather than temperature around wet cooled out door unit. In Part 2, the influence the waste heat of multiple outdoor units for air-conditioning installed on the building affects external space was clarified. And, the influence the inlet temperature and load factor of the outdoor units affect the energy efficiency of air conditioning units was considered. In this report, comparison with the measurement result of the thermal environment around the outdoor unit and CFD analysis result was performed, and the reappearance accuracy of CFD analysis was verified. Furthermore, the case study according to installation situation of outdoor units was performed using CFD analysis. And the thermal environment around the outdoor units and the energy efficiency of the air-conditioning units were examined.

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