Abstract
In late years there was not the example that introduced the high efficiency gas cogeneration system which adopted a developed lean-burn miller cycle into a hotel till now. Therefore it is important to evaluate an introduction effect to a large-scale hotel of this system based on operation data when it thinks about the system introduction in a future large hotel.A purpose of this study is to clarify the actual situation of energy consumption and of heat load of the latest large-scale hotel and to inspect an introduction effect of high efficiency CGS.