Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal International Journal of Science and Environment
Lely Widyaningrum
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Analysis of the Effect of Cooling Water Temperature on Thermal Efficiency in the Main Engine of the MV Pritha Lely Widyaningrum; Agus Prawoto; Dyah Ratnaningsih; Antonius Edy Kristiyono; Intan Sianturi
International Journal of Science and Environment (IJSE) Vol. 6 No. 2 (2026): May 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i2.486

Abstract

Main engines in marine diesel vessels require optimal cooling systems to maintain thermal efficiency amid fluctuating operational loads. This study analyzes the effect of coolant temperature on thermal efficiency of the main engine aboard MV Pritha. Employing a quantitative descriptive-analytic approach, data were collected from operational parameters (RPM, inlet/outlet coolant temperatures, fuel oil consumption) during 12-month sea practice (Sep 2024-Jul 2025). The population comprised all engine data at 70-80% stable load; purposive sampling yielded 30-50 daily observations. Instruments included ship-standard thermometers, flow meters, and tachometers, analyzed via simple linear regression (Y = 64.183 - 0.395X), Pearson correlation (r = 0.995), and ANOVA in SPSS. Results revealed significant negative correlation; 1°C coolant increase temperature reduces thermal efficiency by 0.395% (Sig. < 0.001). Conclusions recommend real-time coolant monitoring and routine maintenance to optimize fuel efficiency and engine longevity.
Co-Authors Agus Prawoto Antonius Edy Kristiyono Dyah Ratnaningsih Intan Sianturi