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Huong, Hoang Thi Nam
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Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Simulation of the Tuna Freezing Process and Evaluation of Factors Influencing the Freezing Time of the Tuna Huong, Hoang Thi Nam; Hoang, Do Huu; Sim, Vo Van
Engineering Science Letter Vol. 3 No. 02 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i02.548

Abstract

This paper presents the simulation of the tuna freezing process by using ANSYS software. Based on simulation results, factors affecting the freezing time including air velocity and freezing temperature were determined. Within the air velocity range w = (5÷15) m.s-1, an increase in the velocity by Ñw =1 m.s-1 led to a decrease in the freezing time by Ñt  = (7.2÷2.3) %. When the freezing temperature was reduced by Ñte = 1 K, the freezing time was reduced by Ñt = (3.2÷2.5) % in the freezing temperature range te = (–35÷–45) oC.
Determination of the Thermophysical Properties of Tuna Using the Heat Pulse Method Phong, Ho Thi My; Thy, Lu Thi Mong; Huong, Hoang Thi Nam; Hoang, Do Huu
Engineering Science Letter Vol. 4 No. 02 (2025): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/IISTR.esl.00902

Abstract

Although the tuna industry plays an important role in supporting the economy and local communities, it remains underdeveloped and faces several challenges, according to reports from the Ministry of Industry and Trade and the Vietnam Tuna Association. This study focuses on examining the heat-related physical properties of tuna—specifically, how well it conducts heat (thermal conductivity), how quickly heat spreads through it (thermal diffusivity), and how much heat it can store (specific heat capacity). These properties were measured using the heat pulse method within a temperature range of -15°C to 20°C. The results showed that thermal conductivity ranged from 0.394 to 1.103 W/m·K, thermal diffusivity from 1.11×10⁻⁸ to 2.60×10⁻⁷ m²/s, and specific heat capacity from 3,377.21 to 52,948.54 J/kg·K.
Co-Authors Hoang, Do Huu Phong, Ho Thi My Sim, Vo Van Thy, Lu Thi Mong