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<p>This study presents an analysis of the cold-keeping capability of a Stirling freezer, employing numerical simulation to evaluate the performance of different insulation materials. The freezer incorporates a beta-type Stirling cooler driven by a rhombic drive mechanism. The freezer box, constructed around the cold head of the Stirling cooler, is designed with specified geometrical parameters and dimensions. The critical component insulation layer is investigated using three materials: aerogel, polyurethane (PU), and vacuum insulation panel (VIP). Numerical simulation is conducted to assess the cold-keeping performance of the freezer box over a period of 60 minutes. The simulation illustrates the scenario in which the Stirling cooler is operated to a steady condition and stopped; therefore, two calculation steps are involved. Results highlight the influence of insulation materials on temperature rise and heat transfer amount over time. This study provides insights into Stirling freezers for low-temperature storage applications.</p>

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Analysis of cold-keeping capability in freezer box constituted by beta-type Stirling cooler with various insulation materials

  • 期刊论文

  • 发表日期：

    2025年3月4日

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  • Jhen-Syuan Huang

摘要

This study presents an analysis of the cold-keeping capability of a Stirling freezer, employing numerical simulation to evaluate the performance of different insulation materials. The freezer incorporates a beta-type Stirling cooler driven by a rhombic drive mechanism. The freezer box, constructed around the cold head of the Stirling cooler, is designed with specified geometrical parameters and dimensions. The critical component insulation layer is investigated using three materials: aerogel, polyurethane (PU), and vacuum insulation panel (VIP). Numerical simulation is conducted to assess the cold-keeping performance of the freezer box over a period of 60 minutes. The simulation illustrates the scenario in which the Stirling cooler is operated to a steady condition and stopped; therefore, two calculation steps are involved. Results highlight the influence of insulation materials on temperature rise and heat transfer amount over time. This study provides insights into Stirling freezers for low-temperature storage applications.