Studi Komputasional Sistem Pendingin Hybrid Pada Eco-Reefer Container

Priyangga, Guna Tiasa (2022) Studi Komputasional Sistem Pendingin Hybrid Pada Eco-Reefer Container. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam reefer container, konveksi adalah mode perpindahan panas yang dominan; oleh karena itu, suhu dan distribusinya diatur oleh pola aliran udara. Aliran udara terdistribusi bertanggung jawab untuk menghilangkan panas yang dihasilkan tidak hanya dari dinding dan pintu wadah yang disebabkan oleh sumber panas eksternal, tetapi juga panas yang dihasilkan oleh komoditas itu sendiri. Akibatnya, komoditas di zona stagnan ini mengalami berbagai penurunan kualitas yang menurunkan kualitasnya. Phase Change Material (PCM) adalah material yang menyimpan energi termal dengan memanfaatkan fenomena perubahan fasa alaminya dan menjaga suhu sekitarnya dengan menyimpan panas laten dalam jumlah besar. Panas laten yang disimpan oleh material akan berubah wujud dari padat menjadi cair, atau sebaliknya saat melepaskan panas, bukan perubahan suhu. Studi ini menganalisis kinerja thermal sistem pendingin eco-reefer container dengan beberapa variasi sistem refrigerasi. Simulasi CFD dilakukan untuk menganalisa distribusi udara dingin dan distribusi suhu di dalam container. Berdasarkan simulasi, bahan PCM NaCl 22% dan Propylene Glikol 20% mampu menggantikan kerja evaporator selama 3 menit dengan mengalami kenaikan suhu dari -20˚C menuju -12 ˚C untuk NaCl 22% dan Propylene Glikol 20% mengalami kenaikan suhu dari -20˚C menuju -12,5˚C. Suhu beban ikan bisa dijaga oleh PCM dalam suhu -20˚C selama 3 menit.
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In reefer containers, convection is the dominant heat transfer mode; therefore, its temperature and distribution is governed by the airflow pattern. The distributed airflow is responsible for removing the heat generated not only from the walls and doors of the container caused by external heat sources, but also the heat generated by the commodity itself. As a result, commodities in this stagnant zone experience various quality declines that reduce their quality. Phase Change Material (PCM) is a material that stores thermal energy by utilizing its natural phase change phenomenon and maintains the surrounding temperature by storing large amounts of latent heat. The latent heat stored by the material will change from a solid to a liquid, or vice versa when it releases heat, not a change in temperature. This study analyzes the thermal performance of the eco-reefer container cooling system with several variations of the refrigeration system. CFD simulation was carried out to analyze the distribution of cold air and temperature distribution in the container. Based on the simulation, PCM NaCl 22% and Propylene Glycol 20% are able to replace the evaporator for 3 minutes by increasing the temperature from -20˚C to -12˚C for 22% NaCl and Propylene Glycol 20% experiencing a temperature increase from -20˚ C to -12.5˚C. The temperature of the fish load can be maintained by PCM at -20˚C for 3 minutes.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Eco-Reefer Container, Phase Change Material, Computational Fluid Dynamics
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	25 Feb 2026 04:34
Last Modified:	25 Feb 2026 04:34
URI:	http://repository.its.ac.id/id/eprint/132606

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