Abstract
In recent years, strict restrictions against the emission of NOx have been applied to the landbased source of pollution. Also, the limitations of NOx emission at the marine area have been considered. A combined cycle using gas and steam turbines is considered to be one of the engines of the low NOx emission. The combined cycle offers approximately the same thermal efficiency and the smaller NOx emission compared to the existing marine diesel engines.
Ultra Small Combined Cycle (USCC) test facility are disigned and constructed in Tokyo University of Mercantile Marine. The total power of USCC is approximately 20 kW and is considered to be the smallest in the world. The purpose of the experiments is classified into two categories. One is to study the characteristics of exhaust gas emission for a gas turbine which is a top cycle of the combined engine. Another is to study the scale effects of the combined engine for the thermal efficiency and the thermal hydraulics comparing with the existing combined cycle power plant whose power is much larger than that of USCC. The major characteristics of USCC are reported and discussed in this paper.
