Shin-ichi Akabayashi

STUDY ON ACCURACY VERIFICATION OF ANNUAL PERFORMANCE FACTOR IN CATALOGUE FOR HOME-USE AIR CONDITIONER BY COP MEASUREMENT EXPERIMENTS

Graduate Student, Graduate School of Science and Technology, Niigata University, M. Eng. Prof., Graduate School of Science and Technology, Niigata University, Dr. Eng. Prof., Faculty of International Studies and Regional Development, Department of International studies and Regional Development, University of Niigata Prefecture, Dr. Eng. Research assistant prof., Graduate School of Science and Technology, Niigata University, Dr. Eng. * 新潟大学大学院自然科学研究科 大学院生 修士 ( 工学 ) ** 新潟大学大学院自然科学研究科 教授 工学博士 *** 新潟県立大学国際地域学部国際地域学科 教授 博士 (工学 ) **** 新潟大学大学院自然科学研究科 特任助教 博士(工学) Annual performance factor (APF) in catalogue is one of the selection criteria for home-use air conditioner. In this paper, the relationship of COP, heating and cooling load and outside air temperature is analyzed using the calorie meter which can carry out temperature adjustment. We constructed “COP Matrix” using the database which is measurement results. APF is calculated from the COP Matrix and compared with catalogue APF to evaluate accuracy of catalogue value. As the result, although the APF of an air conditioner in the catalogue is 5.6, which computed from COP matrix in case1-1 (Tokyo) is 2.9, which is about 0.5 times rather than catalogue value.

DEVELOPMENT OF FLUCTUATING AIRFLOW GENERATOR FOR THE INDOOR AIRFLOW CAUSED BY CROSS VENTILATION

Cross ventilation has the effect on improving the comfort of indoor environment. However, this effect has not been clarified since it is difficult to artificially reproduce the same indoor air-flow as cross ventilation. We have developed a device that is able to generate the fluctuating air-flow of same properties as an air-flow of the cross ventilated room. The verification results of the device’s performance are as follows:(1)The device that combines a slider and a damper can generate the fluctuating air-flow similar to natural cross ventilation. (2)The properties of the reproduced air-flow virtually correspond to those of natural cross ventilation.