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All Journal Jurnal Polimesin Insan Cendekia: Jurnal Studi Islam, Sosial dan Pendidikan
Angga Darma Prabowo
Universitas Lampung
Automotive Engineering Control & Systems Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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Experimental evaluation of the thermal and exergy performance of a flat spiral-tube receiver for a parabolic dish collector Ahmad Yonanda; Muhammad Raihan Junidy; Muhammad Irsyad; Amrizal Amrizal; Harmen Harmen; Dondi Kurniawan; Angga Darma Prabowo
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7557

Abstract

Global dependence on fossil fuels continues to drive the search for cleaner, more sustainable energy sources. One promising technology is the Parabolic Dish Collector (PDC), harnessing concentrated solar energy. The receiver in a PDC is pivotal to overall thermal efficiency and useful energy output. This study evaluates the thermal and exergy performance of a manufactured flat spiral-tube receiver designed to enhance heat transfer. Experiments were conducted under tropical condition between 10:00 and 14:00 local time at three volumetric flow rates (0.5, 0.8, and 1.1 LPM). The 0.5 LPM flow rate yielded the best performance, with a fluid temperature rise up to 43.8°C, a thermal efficiency of 39.1%, and a peak exergy efficiency of 1.1%. The spiral geometry improved fluid residence time, enabling more effective heat absorption. These findings demonstrate that a simple, manufactured spiral tube receiver can improve PDC performance, offering an efficient and cost-effective solution for solar thermal systems.
PENGARUH PENGGUNAAN VIDEO ANIMASI TERHADAP PEMAHAMAN MAHASISWA TEKNIK SEMESTER 2 PADA MATA KULIAH FISIKA Angga Darma Prabowo; Sabiqunassabiqun Sabiqunassabiqun
Insan Cendekia: Jurnal Studi Islam, Sosial dan Pendidikan Vol. 4 No. 1 (2025): Maret 2025
Publisher : Yayasan Pendidikan dan Sosial Islamic Al-Markazi Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.67528/ic.v4i1.11

Abstract

This study aims to investigate the effect of animation videos on the understanding of second-semester engineering students in physics concepts. The method used is a pre-test and post-test design with an experimental group, where 30 students took the pre-test before and the post-test after receiving animation video-based learning. The test consisted of 10 multiple-choice questions, each worth 10 points. The results show that the majority of students experienced a significant increase in scores between the pre-test and post-test, with post-test scores being higher after using animation videos. The use of animation videos proved to be effective in helping students understand complex and abstract physics concepts, such as Newton's laws and energy. However, there were two students whose scores did not show significant improvement, indicating that individual factors should be considered when implementing this learning media.
Co-Authors Ahmad Yonanda Dondi Kurniawan Harmen Harmen Muhammad Irsyad Muhammad Raihan Junidy Sabiqunassabiqun Sabiqunassabiqun