Studi Eksperimental Kinerja Temperatur Dan Energi Integrasi Bio-PCM Pada Chest Freezer

Chest freezer pada operasionalnya memerlukan beban transien yang fluktuatif dari waktu ke waktu sesuai dengan kondisi lingkungan. Untuk mampu memenuhi kebutuhan beban pendinginan maksimum, chest freezer umumnya dirancang dengan kapasitas lebih besar dari beban pendinginan yang dibutuhkan. Akibarnya sistem chest freezer kurang efisien dan kurang handal akibat sering mati-hidup selama operasi. Oleh karena itu perlu dikembangkan sistem chest freezer yang dapat mengurangi siklus mati-hidupnya kompresor dan menghemat penggunaan energi fosil. Penelitian ini mengkaji teknologi refrigerasi chest freezer dengan siklus kompresor yang kecil dan memiliki potensi untuk diintegrasikan dengan sumber energi terbarukan. Pendekatan teknologi yang diterapkan adalah teknologi chest freezer berbasis vegetable oil phase change materials (bio-PCM). Hasil investigasi menunjukkan bahwa penggunaan bio-PCM dapat menurunkan siklus kompresor dan mampu menjaga temperatur produk di bawah -15 derajat C. Konsumsi energi teknologi freezer yang diusulkan relatif sama dengan freezer tanpa bio-PCM. Tetapi bio-PCM dapat membuat chest freezer sangat potensial diintegrasikan dengan sumber energi surya

Heat loads analysis and creation of a uniform model for commercial refrigeration equipment calculation

The global commercial refrigeration equipment market size was valued at USD 33.53 billion in 2020. It is expected to expand at a compound annual growth rate (CAGR) of 4.2 % from 2021 to 2028. Furthermore, factors such as regulatory pressures, shift to lower Global Warming Potential (GWP) refrigerants, technological breakthroughs, and the ability to cater to the ever-changing consumer behaviors are also anticipated to create promising growth opportunities for the market. Environmental issues related to high GWP refrigerants, including global warming and ozone depletion, are compelling commercial refrigeration equipment manufacturers to seek alternatives. The rising demand for advancements in technologies that can help reduce hazardous gas emissions has led to the market participants increasingly equipping their products with modern and magnetic refrigeration systems. Apart from this, these systems improve the energy efficiency of refrigeration equipment, bringing down the cost of operation. The analysis of the structure and heat loads of the commercial freezer with monitoring of temperature distribution on the body of heat-insulating fences and in the internal volume during operation of the system is carried out. The heat loads on the body depending on the structure of the freezer are substantiated on the example of the M400S commercial freezer model. The obtained results allow to significantly reduce the time of selection and calculation of the dimensions of a given model range of equipment for product storage, by developing a standard calculation taking into account the climatic class in which the equipment will be used, and taking into account experimental data obtained during the experimen