Analisa CFD Wall Insulation Menggunakan Phase Change Material (PCM) untuk Dinding Eco-Reefer Container 1/2 Ton dengan Sistem Refrigerasi Hibrid

Agus, Prasetio Prakoso (2023) Analisa CFD Wall Insulation Menggunakan Phase Change Material (PCM) untuk Dinding Eco-Reefer Container 1/2 Ton dengan Sistem Refrigerasi Hibrid. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peran dinding Reefer-Container sangat penting dalam menjaga kualitas produk yang mudah membusuk akibat perubahan suhu dinding(eksternal) kontainer meningkat yang diakibatkan oleh sinar matahari sehingga dapat mempengaruhi suhu internal kontainer. Phase Change Material (PCM) sebagai material penyimpanan energi laten yang dapat digunakan pada sistem pendingin untuk mempertahankan kesegaran produk. Tujuan penelitian ini untuk mensimulasikan model Computational Fluid Dynamic (CFD) untuk wall insulation pada Eco Reefer Container dengan menggunakan PCM. Hasil penelitian simulasi Wall Insulation pada Eco-Reefer Container 0.5 ton dengan 1200 (mm) x 1200 (mm) x 1200 (mm) dan material batasan kondisi yang digunakan untuk Eco-reefer container 0.5 ton seperti colorbond dengan tebal 0,00053 m, polyurethane dengan tebal 0,075 m, heat transfer compound dengan tebal 0,001 m, PCM dengan tebal 0,030 m, dan enkapsulasi dengan tebal 0,001 m pada tiap sisinya. Hasil simulasi CFD metode Fluent pada sistem refrigerasi konvensional dan sistem refrigerasi hibrid menggunakan bahan PCM NaCl 18% dalam 2 variasi yaitu tanpa beban dan dengan beban pada masing-masing model. Pada model Eco-Reefer Container 0.5 ton dengan sistem refrigerasi konvensional tercatat rata-rata suhu pendinginan ruang muat variabel tanpa beban sebesar -19,802oC dan variabel dengan beban nila suhu pendinginan didapatkan sebesar -19,673oC, Sedangkan pada model Eco-Reefer Container 0.5 ton dengan sistem refrigerasi hibrid PCM (NaCl18%) tercatat rata-rata suhu pendinginan ruang muat variabel tanpa beban sebesar -19,869oC dan variabel dengan beban nilai suhu pendinginan didapatkan sebesar -19,801oC. Bahan PCM mempertahankan suhu pendinginan ruang muat kontainer dengan hasil suhu PCM mengalami kenaikan suhu sekitar ± 18 oC s/d ± 19 oC dari set point -20oC. Jadi bahan PCM NaCl 18% dapat menggantikan kerja sistem refrigerasi karena ketika evaporator dimatikan selama waktu pendinginan yaitu 14 jam. Suhu muatan yaitu box ikan di kedua model tersebut mendapatkan suhu rata-rata sebesar -19oC.
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The role of the Reefer-Container wall is crucial in maintaining the quality of perishable products due to the temperature changes on the external container wall caused by sunlight, which can affect the internal container temperature. Phase Change Material (PCM) acts as latent energy storage that can be used in the cooling system to preserve the freshness of the products. The purpose of this research is to simulate a Computational Fluid Dynamic (CFD) model for wall insulation in an Eco Reefer Container using PCM. The simulation results for Wall Insulation in a 0.5-ton Eco-Reefer Container with dimensions 1200 (mm) x 1200 (mm) x 1200 (mm) and boundary materials used for the 0.5-ton Eco-reefer container, such as colorbond with a thickness of 0.00053 m, polyurethane with a thickness of 0.075 m, heat transfer compound with a thickness of 0.001 m, PCM with a thickness of 0.030 m, and encapsulation with a thickness of 0.001 m on each side. The CFD simulation results using Fluent method were compared for the conventional refrigeration system and the hybrid refrigeration system using 18% NaCl PCM in two variations, namely without load and with load for each model. For the Eco-Reefer Container model with the conventional refrigeration system, the average cooling temperature of the cargo space was recorded at -19.802°C without load and -19.673°C with load. Meanwhile, for the Eco-Reefer Container model with the hybrid refrigeration system using PCM (NaCl18%), the average cooling temperature of the cargo space was recorded at -19.869°C without load and -19.801°C with load. PCM material helps maintain the cooling temperature of the container cargo space with the PCM temperature experiencing an increase of approximately ± 18°C to ± 19°C from the set point of -20°C. This means that the 18% NaCl PCM can replace the refrigeration system's function, as it can sustain the cooling process for around 14 hours when the evaporator is turned off. The cargo, such as the fish boxes in both models, reached an average temperature of -19°C.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Reefer Container, Phase Change Material, Computational Fluid Dynamic, Wall Insulation
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:	Prasetio Prakoso
Date Deposited:	28 Aug 2023 01:00
Last Modified:	28 Aug 2023 03:29
URI:	http://repository.its.ac.id/id/eprint/104878

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