潜熱蓄熱材を用いた躯体蓄熱空調システムの蓄熱特性並びにエネルギー評価
本報では粒状の潜熱蓄熱材(PCM)を利用した全面床吹出し型の躯体蓄熱空調システムに関して蓄熱特性ならびにエネルギー評価を行った。「全蓄」より少ないPCM量でピークカットを考え代表的なモデルビルを対象にPCM敷設量と蓄熱時の室内への給気の送風割合の影響をシミュレーションにより検討を行った。その結果より、ピークカット性能、部位別の蓄熱量、PCMを設置することによる室内環境の改善などに考察を加えた。さらに空調システムを想定しエネルギー消費特性に関する評価を行い、月別に蓄熱時間を調整することでエネルギー消費特性を改善可能なことを示した。
A Study on the Energy and the Thermal Characteristics Evaluation of the Building Thermal Mass Storage System with the Phase Change Materials
In this paper, energy and thermal characteristics of the building thermal mass storage system based on the floor-supply displacement air-conditioning system with the granulated PCM (Phase Change Material) is evaluated. A typical commercial building model is simulated by a computer and the influence of the quantity of the PCM and the rate of the supply air into the room at the thermal charging period is examined. This simulation consider that the peak-cut is carried out by the PCM quantity smaller than the case of all cooling load supplied by the thermal storage. And the efficiency of the peak-cut, the thermal storage quantity of the each materials and the effect of the thermal environment improvement by the PCM is studied. And the energy evaluation of the air-conditioning system shows that the energy consumption is reduced by optimizing the thermal charging time all over cooling season.