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All Journal Journal of Electrical Engineering and Informatics
Johan Setiawan
Universitas Negeri Makassar
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering

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The Effect of Intake Air Temperature on Power Output, Thermal Efficiency, and Heat Rate of the Tello Gas-Powered Power Plant: A Regression Analysis of Operational Data Johan Setiawan; Fathahillah Fathahillah; Massikki Massikki
Journal of Electrical Engineering and Informatics Vol. 4 No. 1 (2026): Journal of Electrical Engineering and Informatics
Publisher : Fakultas Teknik Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/jeeni.v4i1.14909

Abstract

This study analyzes the effect of intake air temperature on power output, thermal efficiency, and heat rate of the Tello Gas-Powered Power Plant (PLTG Tello) using a quantitative descriptive-correlational approach based on actual operational data. Sixty-six operational records (N = 66) collected between February and May 2026, filtered to a relative humidity range of 65-75%, were analyzed using Pearson correlation and linear/quadratic regression. The results show that intake air temperature has no significant effect on power output (r = -0.030, p = 0.811), thermal efficiency (r = -0.022, p = 0.864), or heat rate (r = 0.031, p = 0.802). Although the direction of all three relationships is consistent with Brayton-cycle theory, the strength of the relationships is very weak within the observed temperature range of 20.5-35.8°C. The contribution of intake air temperature to variations in plant performance is only 0.05-2.12% (R²), while more than 97% of the variation is explained by other factors, particularly operational load level. These findings indicate that load-dispatch management and equipment maintenance play a more decisive role in determining PLTG Tello's performance than intake air temperature variation within the observed tropical climate range.
Co-Authors Fathahillah Fathahillah Massikki, Massikki