Abstract
The Purpose of our research is to improve the energy efficiency of multi split type air conditioning systems for buildings operated under low thermal load conditions. For this purpose, we develop an innovative energy-saving A/C controller that enables an optimum operation of A/C and the heat recovery VRV systems. By combining the COP data of A/Cs obtained by those tests and the field data measured in a real building, the annual energy consumption of the A/C system was estimated to examine the energy-saving effect of the new A/C controller. As a result of this estimation, it was ascertained that the new A/C controller could attain 50% higher annual average COP IN comparison with that of the conventional controller.
