Exergy analysis on micro-turbine combined cycle.

A micro turbine are tiny gas turbines that can generate both electricity and heat. It has small capacities that vary from 25 kW to 250 kW. This article aims to determine the value of enthalpy, entropy, energy and exergy in each state, which is then used to calculate percentage of efficiency and exergy destruction on each component. The research result shows that, the largest percentage of efficiency is in the startup component burner and the smallest efficiency is found in the steam reformer. Meanwhile, in exergy destruction, the steam reformer is a component that has exergy the largest destruction, and the startup burner has the smallest exergy destruction. The results of the analysis process show that the optimal mass flow rate is one of the keys to designing a heat exchanger. Where, pressure drop, and convection coefficient increase with increasing flow rate mass. However, the optimal mass flow rate is also highly dependent on heat exchanger dimensions. [ABSTRACT FROM AUTHOR]