Study on optimal operational planning of an advanced co-generation system on a hotel's energy demand

In order to empirically study a cogeneration system, an advanced co-generation system (ACGS) was built in Waseda University in 1999. The ACGS consists of a gas turbine system, a steam turbine system, an ammonia-water mixture turbine system, an ammonia absorption refrigerator system and an ice storage system. In the bottoming stage of ACGS, by activating an ammonia-water mixture turbine system and an ammonia absorption refrigerator system, both of which are effective for heat recovery of low temperatures, the system is made up positively using the heat cascade, which is unique compared to other systems. At present, for the introduction of the co-generation system, its practicality is not fully considered and a method has not yet been established which would lead to an operating method fitting the characteristics of the customer requirements. So it is considered very important to propose the most suitable system construction, taking an overall view of the annual earnings and cost of energy for the customers. In this paper, we cover an assumed system which changed the part of composition of ACGS and, in order to find out the initial advantages of the system, seek the most suitable composition and the most suitable operational planning of a system for cooling, electricity and heat demand of a typical hotel, and then propose an example of the system design guide.