PERFORMANCE ANALYSIS FOR THE CHARACTERISTICS OF CHP SYSTEM (MICRO GAS TURBINE + HYBRID TYPE ABSORPTION CHILLER)

摘要

The characteristics of the cogeneration system combined Micro Gas Turbine (MGT) and thernhybrid absorption chiller are studied numerically to find the optimal working conditions. As thernpartial load of cooling decreases, the fuel consumption ratio decreases. Using the heat portionsrnof MGT exhaust gas and increase the heat of the water, the ratio of the fuel savings and COPfrnalso increase. In the full load cases and 50% cooling load cases, the fuel savings ratio are 0.22rnand 0.84, COP_f are 1.29 and 5.09 respectively. In the case of 100% to 60% partial load, thernlargest portion that absorbs heat in the absorption chiller when operating are ranked as follows:rnfirst, is the burner heat; second is the hot water; and third is the exhaust gas of MGT. But underrnthe 60% partial load, the hot water is first in order while the burner heat is the last. In the case ofrnfull load, the exhaust gas of MGT has no effect on the absorption chiller. However, as the partialrnload of chiller decreases, the exhaust of the MGT shows a larger effect on the absorptionrnchiller.