Abstract
The gas-steam power plant combines a gas power plant and a steam power plant, where Heat Recovery Steam Generator (HRSG) is a unit for generating steam. The waste heat from this system is channelled to the chimney with a Thermoelectric Generator (TEG) module to generate electrical energy. TEG uses the waste heat from the thermal conduction process from the chimney wall, where the height, diameter, and velocity variables are considered for analysis. To optimize this analysis, we used dimensional analysis to get a laboratory-scale system, and the method used the matrix dimensionless of the balance energy equation. As a result of the investigation, the calculation of chimney heat potential is obtained; the condition temperature will increase when velocity increases and the value of diameter and height decrease, then there is have an error about 14% from laboratory-scale design of chimney.
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