2020 Volume 45 Issue 281 Pages 35-43
Electric heat pump type multiple packaged air conditioning systems are a typical individual air conditioning system for commercial buildings. To increase user satisfaction and promote dissemination, it is important to be able to appropriately evaluate energy saving, comfort, and economy. Therefore, in this study, we improved the heat source characteristic model of the room air conditioner that we previously developed [Ueno, Kitahara, Miyanaga, Transactions of SHASE Japan, No.190(2013) pp.41-49)] and constructed a heat source characteristic model of a multiple packaged air conditioning system. In addition, the accuracy of the model was verified experimentally. Specifically, we conducted 150 cooling experiments of the multiple packaged air conditioning system to understand its operating characteristics, such as power consumption and COP of equipment. The experimental results were compared with model estimates. Since the measured values and the estimated values generally agreed well, the validity of this model was confirmed. As a result, the power consumption, COP, etc., of the multiple packaged air conditioning system during any steady cooling operation can be easily estimated. The greatest feature of this model is that a specific equipment model can be modeled using only data published by the manufacturer, making highly versatile.
