The Effect of Refrigerant Pressure on the Accommodation Cooling System on the MV. Meratus Medan 1 Ship

Authors

  • Lely Widyaningrum Surabaya Maritime Polytechnic Applied Undergraduate Study Program, Ship Machinery Engineering Technology, Indonesia
  • Agus Prawoto Surabaya Maritime Polytechnic Applied Undergraduate Study Program, Ship Machinery Engineering Technology, Indonesia
  • Dyah Ratnaningsih Surabaya Maritime Polytechnic Applied Undergraduate Study Program, Ship Machinery Engineering Technology, Indonesia
  • Antonius Edy Kristiyono Surabaya Maritime Polytechnic Applied Undergraduate Study Program, Ship Machinery Engineering Technology, Indonesia
  • Intan Sianturi Surabaya Maritime Polytechnic Applied Undergraduate Study Program, Ship Machinery Engineering Technology, Indonesia

DOI:

https://doi.org/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.

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Published

2026-04-27

How to Cite

Lely Widyaningrum, Agus Prawoto, Dyah Ratnaningsih, Antonius Edy Kristiyono, & Intan Sianturi. (2026). The Effect of Refrigerant Pressure on the Accommodation Cooling System on the MV. Meratus Medan 1 Ship. International Journal of Science and Environment (IJSE), 6(2), 257–262. https://doi.org/10.51601/ijse.v6i2.486

Issue

Vol. 6 No. 2 (2026): May 2026

Section

Articles

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Copyright (c) 2026 Lely Widyaningrum, Agus Prawoto, Dyah Ratnaningsih, Antonius Edy Kristiyono, Intan Sianturi

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This work is licensed under a Creative Commons Attribution 4.0 International License.