This study presents a data-based load pattern analysis of a multi-type air conditioner. The correlation between the outdoor unit compressor frequency and the sum of each indoor unit electronic expansion valve (EEV) opening was analyzed to determine th...
This study presents a data-based load pattern analysis of a multi-type air conditioner. The correlation between the outdoor unit compressor frequency and the sum of each indoor unit electronic expansion valve (EEV) opening was analyzed to determine the load ratio of each indoor unit. The results show a strong correlation between the compressor frequency and the EEV opening (total correlation coefficient of 0.817), indicating that the EEV opening of each indoor unit is proportional to its load. The average load ratio of each indoor unit according to the EEV opening was also calculated, with ID_IDU No. 10 indoor unit having the highest load ratio (57.71%), followed by ID_IDU No. 11 (17.56%), and ID_IDU No. 12 and ID_IDU No. 13 (4.67% and 20.06%, respectively). Furthermore, the study found that 1-in-1 mode was the most common driving mode (62.89%), while 4-in-1 mode was the least common (1.89%). These findings suggest that operating all indoor units simultaneously in multi-type air conditioners is rare. Overall, this study provides valuable insights into the load pattern analysis of multi-type air conditioners, which can inform the development of more efficient and effective air conditioning systems.