마이크로 가스 터빈과 하이브리드 흡수식 냉동기와 결합된 열병합 발전/냉방 시스템 성능 특성에 관한 연구

The characteristics of the cogeneration system combined MGT(micro gas turbine) and the hybrid absorption chiller are studied numerically to find the optimal working conditions. As the partial load of cooling decreases, the fuel consumption ratio decreases. But the using heat portions of MGT exhaust gas and the hot water increases, so the fuel save ratio increases and COP f increases. In the cases of the full load and 50% of cooling load, the fuel save ratio are 0.22 and 0.84, COP f are 1.29 and 5.09 respectively. In the case of 100%- 60% partial load, the largest heat portion of absorption chiller for operating is the heat of burner and the second is the hot water, the third is the exhaust gas of MGT. But under the 60% partial load, the hot water is first oder, the heat of burner is last order. The exhaust gas of MGT have not effect on the absorption chiller in the case of the full load but as the partial load of chiller decreases, the exhaust gas of the MGT have large effect on the absorption chiller.