Analisis Kinerja Termal Sistem Refrigerasi Hybrid Menggunakan Phase Change Material Pada Eco Reefer Container Kapasitas ½ Ton

Rahardjo, Danutirta Chrisraftiano (2023) Analisis Kinerja Termal Sistem Refrigerasi Hybrid Menggunakan Phase Change Material Pada Eco Reefer Container Kapasitas ½ Ton. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Operasional reefer container membutuhkan daya besar untuk menghasilkan kinerja pendinginan yang optimal dan sesuai harapan. Hal ini sejalan dengan proyeksi peningkatan penggunaan reefer container pada masa yang akan datang. Semangat menjaga efisiensi penggunaan energi telah mendorong sektor industri dan peniliti mencari cara untuk menyelesaikan permasalahan terhadap penggunaan energi yang besar pada operasional reefer container. Upaya yang dilakukan adalah dengan melakukan inovasi terhadap penyimpanan energi agar dapat menjaga suhu optimal dalam ruang muat dengan efisiensi penggunaan energi. Penyimpanan kalor dalam bentuk Phase Change Material (PCM) yang dilakukan bersamaan dengan upaya pendinginan ruang muat memungkinkan untuk menjaga suhu ambien ruang cargo agar kenaikan suhunya dapat diperlambat. Bahan PCM yang digunakan adalah larutan NaCl dengan konsentrasi 18% karena memiliki kapasitas termal yang tinggi serta titik beku hingga -14°C. Penelitian eksperimental menggunakan sistem refrigerasi kompresi uap dengan ruang muat yang dipasang box enkapsulasi berisi PCM. Peneliti melakukan penelitian terhadap sistem refrigerasi konvensional dan sistem refrigerasi hybrid PCM. Sistem refrigerasi konvensional memiliki waktu pendinginan yang lebih singkat dengan tekanan kerja yang lebih tinggi. Suhu komponen kedua sistem refrigerasi cenderung sama, kecuali pada kompressor. Suhu ambien dan laju kenaikan suhu sistem refrigerasi hybrid PCM lebih rendah dibandingkan sistem refrigerasi konvensional. COP kedua jenis sistem memiliki nilai yang tidak berbeda secara signifikan pada suhu -10°C, -15°C, dan -19°C. Hal ini menunjukkan kinerja sistem refrigerasi kedua sistem cukup stabil untuk melakukan proses pendinginan sesuai target suhu pendinginan.
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Reefer container operations require large amounts of power to produce optimal and expected cooling performance. This is in line with the projected increase in the use of reefer containers in the future. The spirit of maintaining energy use efficiency has encouraged the industrial sector and researchers to find ways to solve the problem of large energy use in reefer container operations. Efforts are being made to innovate energy storage in order to maintain optimal temperature in the cargo hold with efficient use of energy. Heat storage in the form of Phase Change Material (PCM) which is carried out simultaneously with efforts to cool the cargo space makes it possible to maintain the ambient temperature of the cargo space so that the temperature increase can be slowed down. The PCM material used is NaCl solution with a concentration of 18% because it has a high thermal capacity and a freezing point of up to -14°C. Experimental research uses a vapor compression refrigeration system with a cargo hold equipped with an encapsulation box filled with PCM. Researchers conducted research on conventional refrigeration systems and PCM hybrid refrigeration systems. Conventional refrigeration systems have shorter cooling times with higher working pressures. The temperature of the components of the two refrigeration systems tends to be the same, except for the compressor. The ambient temperature and temperature rise of the PCM hybrid refrigeration system are lower than conventional refrigeration systems. The COP of the two types of systems did not differ significantly at -10°C, -15°C and -19°C. This shows that the performance of the refrigeration system of both systems is stable enough to carry out the cooling process according to the target cooling temperature.

Item Type: Thesis (Other)
Uncontrolled Keywords: Refrigeration System, PCM, COP, Reefer Container, Sistem Refrigerasi
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM485 Cold storage on ships. Marine refrigeration.
Divisions: Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User: Danutirta Chrisraftiano Rahardjo
Date Deposited: 22 Nov 2023 01:37
Last Modified: 22 Nov 2023 01:37
URI: http://repository.its.ac.id/id/eprint/103912

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