Potensi Material Berubah Fasa PEG-400 sebagai Sistem Cold Storage Sayur Selada

Authors

  • Maduri F Departemen Fisika, Universitas Andalas
  • Sri Rahayu Alfitri Usna Departemen Fisika, Universitas Andalas
  • Astuti Astuti Departemen Fisika, Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.12.3.506-510.2023

Keywords:

Cold Storage, PCM PEG-400, Selada, Temperatur

Abstract

Kesegaran sayur dapat dijaga dengan menyimpan sayur dalam cold storage pada kondisi sejuk (5-10 °C). Polietilen glikol (PEG)-400 merupakan salah satu phase change material (PCM) yang memiliki rentang titik lebur 4 °C hingga 8 °C dan panas laten yang cukup besar yaitu 187 kJ/kg sehingga berpotensi untuk dikembangkan sebagai sistem cold storage. Pada penelitian ini diuji potensi PCM PEG-400 sebagai sistem cold storage sayur. Massa PCM PEG-400 divariasikan dari 2 kg, 2,5 kg, 3 kg, dan 3,5 kg, dengan kotak cold storage dari styrofoam ukuran 34 x 25 x 30 cm3 dan ketebalan 2,5 cm. Sayur yang diuji yaitu selada dengan massa 250 g. PCM PEG-400 dibekukan di dalam freezer lalu dimasukan ke dalam kotak styrofoam yang telah berisi selada. Kotak ditutup rapat dan perubahan temperatur setiap waktu diukur hingga temperatur PCM mendekati temperatur lingkungan. Hasil penelitian menunjukkan 3 kg PCM PEG-400 efektif menurunkan temperatur selada hingga 5 °C selama 4 jam dan 2 kg PCM PEG-400 efektif menurunkan temperatur selada hingga 10 °C selama 4 jam 35 menit.

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Published

2023-07-03

How to Cite

F, M., Usna, S. R. A., & Astuti, A. (2023). Potensi Material Berubah Fasa PEG-400 sebagai Sistem Cold Storage Sayur Selada. Jurnal Fisika Unand, 12(3), 507–511. https://doi.org/10.25077/jfu.12.3.506-510.2023

Issue

Vol. 12 No. 3 (2023)

Section

Articles

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