2019 Volume 44 Issue 271 Pages 11-18
At present, there is a need to significantly reduce the energy consumption of the air conditioning systems used in commercial buildings. For that purpose, it is necessary to utilize renewable energy and unused energy in addition to improving the performance of the air conditioning unit. Therefore, we aim to develop an individual distributed air conditioning system that utilizes heat source water, which is easier to handle and more expandable than the Freon refrigerant. As a first step, we developed a water heat source makeup unit, which utilizes a low-temperature desorption-type desiccant rotor, and evaluated the performance of the single unit. As a result, it was possible to confirm the dependency of the cooling / heating capacity, dehumidification / humidification amount, and COP on the heat source water temperature. In addition, we confirmed that this unit demonstrates high performance throughout the summer and intermediate seasons, and by introducing renewable thermal energy and unutilized thermal energy etc. it demonstrates high performance even in winter.
