Study on the Selection of Home-use Air Conditioners- COP Measurements of Air Conditioners on 2013 Model Year

摘要

Selection of home-use air conditioner according to room floorage is a common in Japan. It is better not to method for high insulated house, because cooling and heating load is too large due to air conditioner part-load operation in intermediate seasons. A COP (Coefficient Of Per-formance) of a heat pump device varies significantly according to heating and cooling load and ambient temperature. It is very important for a selection method which is considered by the house thermal performance and local weather conditions.rnIn this paper, the calorie meter which can carry out temperature adjustment is manufactured, and analyzed the relationship of COP , heating and cooling load and outside air temperature using the calorie meter. COP is obtained by dividing the enthalpy difference on inlet and out-let of inside air conditioner unit by the electric power consumption of air-conditioner. We constructed “COP MATRIX” using the database which is measurement results.rnFor energy saving, the multiple air conditioners better than a single which corresponds rated capacity with peak heating and cooling load. COP of cooling is higher when outdoor tempera-ture is relatively low. COP of heating is higher when outdoor air temperature is relatively high. There is a tendency for COP to rise as wind velocity of inside unit outlet increases.