| Summary: | 碩士 === 國立勤益科技大學 === 冷凍空調系 === 99 === Thermoelectric heater/cooler has the advantage of being portable, simple, noiseless, reliable, and environmentally benign, it is quite suitable for transporting and storage for bio-medical products (such as blood and platelet) which are very sensitive to temperature variation. In this study, the effort will be focused on the improvement of thermal performance for a thermoelectric blood heater/cooler and thermoelectric heater with pin fin using copper and aluminum alloy were analyzed comprehensively using CFD simulate. Performance tests were conducted to investigate the optimum operation parameters for the thermoelectric blood heater. Beside, the empirical methods were developed to calculate the coefficient of performance (COP) of thermoelectric cooler. The experimental tests will also be performed to verify the optimized cooling capacity and heating performance, and to quantify the degree of improvement. The thermoelectric blood heater/cooler and storage cabinet have been developed successfully. The results revealed that the heat radiation effect cannot be neglected for pin fin heater, especial for the application under high emissivity (ε=1) and low heat transfer coefficient (h=10Wm-2K-1) conditions. Besides, the optimum input voltage at 8 volt could be obtained while conducting heating process from 4℃ to 37℃. Furthermore, better performance for thermoelectric cooler could be developed by using U-type plate fin at input voltage of 8 volt through numerous performance experiments. The COP of 0.32 was derived through empirical method using thermoelectric performance curves, which revealed the feasibility of thermoelectric heater/cooler for blood storage application.
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