Abstract
We designed and installed the high efficiency solar air-conditioning system in our own office building (Tokyo Gas Co,. Ltd. Nakahara building). The main feature of the system is as follows. 1. High efficiency solar thermal collectors ware adopted (evacuated tube type). 2. The gas fired absorption chiller heater that can use the solar thermal energy effectively was adopted. 3. The energy-saving control system to utilize solar thermal energy efficiently and to decrease the electric power of the accessory such as pumps was introduced. The solar air-conditioning system started operation from April, 2009 and we will evaluate the operational condition of the system for one year afterwards. In this report, we introduce the outline of the design concept of the high efficiency solar air-conditioning system.
