ガスエンジン特性を考慮したコージェネレーションにおける技術選択の評価

抄録

There is a cogeneration system(CGS) as a method of efficient use of energy. The overall efficiency of the CGS is 70 to 85%, but there is a problem that the total efficiency is influenced by other equipment making up the system. In this research, we focus on gas engines among equipment. Gas engines are divided into high speed type and middle speed type, maintenance is the most important factor among those characteristics. The purpose of this research is to focus on the type composition at the time of introducing a plurality of gas engines and the maintenance of each kind, and to evaluate the technical selection by comparing various kinds of constructions from the economic point of view. For this purpose, the timing of maintenance and the output of the gas engine accompanying it are also calculated in the optimization simulation. Temporary demand for this time is 31 days in January, and the maintenance span was set as 1/10 of the original, and conditions were set up to introduce three types of maintenance for each of high speed and medium speed type. Furthermore, no grid electric power is used, and it is said that a total of 3 gas engines can be installed at 4000 kW gas engine. As a result, all three equipments operated evenly in the case of 3 middle speed type. In addition, in the case of other configurations, one high-speed model protruded and operated, and the other two were operated so as not to perform the second or third maintenance, which is related to the maintenance span greatly. In this case, simulation using provisional data was carried out, but considering the parameters as original things in a long period of 5 to 10 years or the like seems to be able to consider reality.