Design, prototyping, and optimization of a handheld refrigeration probe system for dental pulp testing
APPLIED THERMAL ENGINEERING(2024)
摘要
Refrigeration technology is widely used in medical applications such as dental pulp testing, therapeutic hypothermia, and cryosurgery. There is a growing trend to replace conventional cryogen-based approaches with thermoelectric cooler-based thermal management systems. This transition is driven by the notable advantages of thermoelectric (TE) coolers, which overcome the limitations of cryogens while providing a safe, flexible, reusable, stable, and environmentally friendly refrigeration temperature. Within this transition, achieving a -30 degrees C refrigeration temperature, which is important for pulp testing, within the confines of a handheld space remains challenging. This study successfully addressed this challenge by introducing a high-performance heat dissipation component based on the principle of conjugate heat transfer (CHT). A handheld refrigeration probe system for dental pulp testing was developed. The prototype has the salient features of achieving a -35 degrees C temperature with a duration time of 4 min and a response time of 30 s within a cylindrical space of & empty; 35 mm x 150 mm. Furthermore, by geometrical optimization of the TE module and topology optimization of the heat dissipation design, the lowest temperature of the proposed probe can reach -44 degrees C. Overall, this study demonstrates the capabilities of TE and CHT in refrigerating and highlights the potential of this combined technology to improve the dental pulp testing in a handheld, stable, and ecological manner.
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关键词
Thermoelectric effect,Conjugate heat transfer,Untethered design,Refrigeration temperature,Topology optimization
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