Jiro Okajima

Cogeneration System Dynamic Simulation for Snow-Melting Plant.

In this paper we describe an alternative snow-melting system for the Joetsu Shinkansen Line which runs through a heavy snowfall district. This system consists of a cogeneration system, heat pumps and thermal storage tanks. In order to verify its performance and to establish a control procedure, a dynamic simulation of the system based on the actual equipment data, was carried out under actual load conditions. As a result, the thermal storage tanks were found to play the important role of reducing the start/stop frequency of the heat generation equipment for unpredictable intermit-tent snow load. It contributes to reduce the total energy consumption. This alternative system concludes about 30% less primary fuel than the conventional plant.