Abstract
During cooling operations, short-circuited flow can occur when multi-layered outdoor air-conditioning unit set up on a balcony re-absorbs its own high-temperature exhaust. In such a case, operation of the air-conditioning unit may stop as refrigerant pressure rises. In this study, with the aim of finding a method for setting up outdoor air-conditioning unit in an appropriate manner, problem points were determined by taking on-site measurements and phenomena were clarified by performing model experiments. In addition, and approximate expression for the rise in suction temperature was prepared, and on the basis of model experiments, accurate prediction by this expression was verified and the relationship between the rise in suction temperature and unit setup conditions were studied.
