| Summary: | 碩士 === 國立宜蘭大學 === 機械與機電工程學系碩士班 === 105 === In recent years, the destruction of atmospheric ozone and environmental pollution caused by using of refrigerant has aroused the attention of public. Developing alternative green energy technology has become an urgent task. Based on Peltier effect, the thermoelectric chip holding cooling potential and power generation has been gradually applied to the cooling of electronic equipment, exhausted heat recovery, building applications and other areas, having the trend of replacing refrigerant and compressor.
In this research, the commercial thermoelectric chip TEC112703 was used of producing the thermoelectric refrigeration and air conditioner through optimizing design of the experimental model. Also a numerical simulation model for further understanding the temperature and flow rate distribution was established. The results of experiment and analysis show that the temperature of the cooling chamber was kept at 4~7 ℃ and the accessed COP value might be experienced from 0.380 to 0.328 at the electric power of 35~55 W. This has been accorded with the condition of small refrigeration. On the other hand, the working parameter for thermoelectric air conditioning, power of 251 W, wind speed 1 m/s and water circulation flow rate of 35 ml/s. Here could be regulated 31.2 % power used to cooling performance, and the other of about 68.8 % are needed in dehumidification, in which approximately 13 % of the humidity in the air was released during the run. Additionally, the suitable wind speed of the thermoelectric air conditioner will be fallen within 1 m/s and 1.6 m/s. And the effective cooling won’t be accessed if the fin-length is too long which increases unnecessary cost. The results of this research can be also believed to be benefic development of thermoelectric refrigeration related products and mobile vehicles in the future.
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