Akademik Veri Yönetim Sistemi
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2026 (SCI-Expanded, Scopus)
Mathematical modeling plays a crucial role in analyzing and designing control systems, offering insights into system behavior and aiding the development of efficient controllers. Similarly, electronic circuit models can be simulated using various commercial or open-source platforms, enabling flexible and accessible system analysis. This study presents a thermal model of a chest freezer using LTspice, an electronic circuit simulator, to address the challenges of evaluating the performance of the freezer under various operating conditions. Although standardized tests effectively assess energy efficiency and safety, they are limited in capturing real-world scenarios such as variable ambient temperatures, load types, and frequent door openings, which require significant time and resources. The proposed simulation model based on LTspice allows adjustable parameters for ambient temperature, internal thermal load, and door openings, making it possible to explore different operating conditions efficiently. The accuracy of the model is assessed through experimental validation using data from a climatic chamber. The results indicate that both the simulated and measured temperature profiles follow similar trends, with comparable oscillation patterns and average values. Minor differences in curve shapes are observed, primarily due to simplifications in the model, but overall alignment remains strong. The compressor on-off cycles in the simulation also closely match the experimental observations. These results validate the LTspice model as a reliable and adaptable representation of freezer thermal dynamics. The method offers a cost-effective and scalable alternative to traditional thermal simulation tools, with potential applications in design optimization, control strategy development, and evaluation of other freezer models with minimal modification.