中規模オフィスビルを対象とした全熱交換器の空調消費電力削減効果に関する実測研究

摘要

本研究は中規模オフィスに設置された全熱交換器の効果を実測調査により明らかにするものである．既報（第1報）ならびに（第2報）では，冬期ならびに夏期条件にて全熱交換器を用いた場合の空調消費電力量の削減効果を実測により定量的に明らかにした．本報（第3報）では，実測対象オフィススペースをモデル化し，全熱交換器モデルを介してCFD（計算流体力学）とBES（建物エネルギーシミュレーション）を速成解析することで，室内流れ場，温度場環境に加え，空調熱負荷予測を行うと共に，全熱交換型換気扇の室内側吹出口・吸込口位置を変更した場合の省エネルギー効果を検討した結果について報告する．%At present, variety of environmental problems are considered to have global effects. Therefore, a positive approach toward energy conservation is desirable in the field of building construction, as well. Under the concept of sustainable building and its assessment, not only thermal comfort and indoor air quality but also energy efficiency has been recognized as an essential factor for an environmentally conscious design, and a highly accurate prediction method is also required for an optimized HVAC (Heating, Ventilation and Air Conditioning) system design for buildings. On the other hand, there are several methods for energy conservation in building designs, and the installation of an energy recovery ventilator is one of the effective solutions to reduce ventilation load.rnThis study outlines a coupled numerical simulation procedure with a combination of BES (building energy simulation) and CFD (computational fluid dynamics) in order to reduce the consumption of energy owing to air conditioning in office buildings, by employing energy recovery ventilators. The first floor of a two-story office building was selected for analysis. There were seven heat pump air conditioning systems and four duct type ventilation systems with energy recovery ventilator units on that floor.rnFrom the numerical simulation results, it was confirmed that the location and distribution of the energy recovery ventilator had predominant effects on the energy consumption.