人工気候室における測定結果に基づく冷暖房COPの部分負荷特性 : ルームエアコンディショナの冷暖房COPおよびエネルギー消費量に関する研究その1  [in Japanese] PART LOAD CHARACTERISTIC OF COP OF RESIDENTIAL AIR CONDITIONER BASED ON MEASUREMENT IN ARTFICIAL CLIMATE CHAMBER : Heating/Cooling COP and Energy Consumption of Residential Air Conditioner Part 1  [in Japanese]

It can be said that to improve energy efficiency of a room air conditioner is effective to reduce household energy consumption for heating and cooling, and CO_2 emission. However, many problems have remained unclear such as part load characteristic of air conditioner, or the relation between outdoor temperature and COP. In this paper, we conducted COP measurement in various conditions (heating/cooling load rate, outdoor temperature, indoor humidity etc.) in the artificial climate chamber. The measured COP was compared to the theoretical COP calculated from the measured refrigerative temperature. We clarified the mechanism that COP and the heating/cooling capacity changed by outdoor temperature, indoor humidity and part load ratio. The COP curve which fluctuated according to the outdoor temperature etc. was shown based on the measurement result and the prediction formula.