Simulasi Komputasional Kinerja Termal Sistem Refrigerasi Hybrid Menggunakan PCM pada Eco Reefer Container 20 Ft

Ramadhani, Adityawan Eka (2023) Simulasi Komputasional Kinerja Termal Sistem Refrigerasi Hybrid Menggunakan PCM pada Eco Reefer Container 20 Ft. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Berdasarkan kebutuhan akan perlunya pengembangan untuk mengurangi konsumsi energi pada reefer container, pada penelitian ini akan dilakukan pemodelan reefer container dengan penambahan PCM. Simulasi menggunakan software Engineering Equation Solver dengan cara menginputkan algoritma berdasarkan sistem refrigerasi sehingga didapatkan keluaran berupa dustribusi suhu dan tekanan serta COP. Simulasi menggunakan software Aspen HYSYS dilakukan dengan terlebih dahulu membuat process flow diagram (PFD). Selanjutnya, dilakukan penginputan data dan diapatkan keluaran berkaitan dengan properties dari sistem referigerasi. Simulasi menggunakan software Energy Plus dilakukan dengan terlebih dahulu melakukan pemodelan di SketchUp. Selanjutnya, model akan diekspor ke dalam bentuk file lain dan kemudian disimulasi konsumsi energinya. Dalam keadaan suhu ruang muat reefer container -25 ºC dan suhu di kondensor sekitar 37.8 ºC, hasil simulasi EES menunjukkan bahwa distribusi tekanan dan suhu dalam sistem dimulai dari state 1 dengan suhu -15 ºC dan tekanan 2.475 bar, state 2 dengan suhu 67.8 ºC dan tekanan 17.35 bar, state 3 dengan suhu 29.8 ºC dan tekanan 17.35 bar, dan state 4 dengan suhu -25.4 ºC dan tekanan 2.475 bar. Simulasi Aspen HYSYS menunjukkan hasil yang serupa namun terdapat perbedaan di state 1 memiliki suhu -20 ºC dan state 2 dengan suhu 65.1 ºC. Dengan simulasi EES, nilai COP meningkat sekitar 14.3% dari 1.89 menjadi 2.16. Pada simulasi EnergyPlus energi total yang dibutuhkan sebesar 496.25 kWh di mana konsumsi energi untuk cooling system yaitu sebesar 110.77 kWh. Simulasi EES cenderung memiliki hasil yang mendekati dengan perhitungan analitikal. Sementara untuk Aspen HYSYS, untuk output tertentu memiliki perbedaan dari perhitungan analitikal, selebihnya mendekati hasil perhitungan analitikal. Dengan menggunakan software EnergyPlus, hasil yang didapatkan mendekati dengan hasil perhitungan analitikal.
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Based on the need for energy consumption reduction in reefer containers, this study focuses on modeling a reefer container with the addition of Phase Change Material (PCM). The simulation is conducted using Engineering Equation Solver (EES) software by inputting algorithms based on the refrigeration system. The output obtained includes temperature and pressure distributions, as well as the Coefficient of Performance (COP). Additionally, simulation using Aspen HYSYS software involves creating a Process Flow Diagram (PFD). Data input is performed to obtain output related to the properties of the refrigeration system. Energy Plus software simulation is conducted by first modeling in SketchUp. The model is then exported into another file format and its energy consumption is simulated. Assuming a cargo hold temperature of -25 ºC and a condenser temperature of approximately 37.8 ºC, the EES simulation results show that the pressure and temperature distribution within the system starts from state 1 with a temperature of -15 ºC and a pressure of 2.475 bar, state 2 with a temperature of 67.8 ºC and a pressure of 17.35 bar, state 3 with a temperature of 29.8 ºC and a pressure of 17.35 bar, and state 4 with a temperature of -25.4 ºC and a pressure of 2.475 bar. The Aspen HYSYS simulation shows similar results, but with differences, where state 1 has a temperature of -20 ºC and state 2 has a temperature of 65.1 ºC. Using EES simulation, the COP value increases by approximately 14.3% from 1.89 to 2.16. In the EnergyPlus simulation, the total energy required is 496.25 kWh, with a cooling system energy consumption of 110.77 kWh. The EES simulation tends to produce results close to analytical calculations. As for Aspen HYSYS, some specific outputs differ from analytical calculations, while others are close to analytical results. By using EnergyPlus software, the obtained results are close to analytical calculations.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	COP, energy, Phase Change Material (PCM), reefer container, simulation, energi, simulasi
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering 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:	Adityawan Eka Ramadhani
Date Deposited:	06 Sep 2023 07:47
Last Modified:	06 Sep 2023 07:47
URI:	http://repository.its.ac.id/id/eprint/102431

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