Temperature Profile of Hollow Aluminum Heated using Thermoelectric on Both Sides

• Published in: Journal of physics. Conference series Vol. 2013; no. 1; pp. 12013 - 12017
• Main Authors: Zafirah, T N, Triqadafi, A O, Kamasi, D D, Sakti, S P
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.09.2021
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/2013/1/012013

Abstract The use of QCM sensors for gas sensors requires a reaction space known as headspace. Gas sensor headspace is needed to be heated to enable the gas molecule to react with the sensor sensitive layer. In the development of a sensor array, sensor placement requires space. As a result, the sensor experiences a temperature condition influenced by the sensor’s placement. Our headspace was made of a rectangular aluminum hollow. The hollow dimension was 40mm in height and 20mm in width with an aluminum thickness of 1mm. The aluminum hollow was heated on two sides using two thermoelectric TEC-12706. The temperature distribution of the aluminum heated by thermoelectric on both sides shows the temperature distribution profile, which depends on its position towards the thermoelectric. At the elevated temperature of 80°C, aluminum’s surface temperature shows a uniform temperature distribution in the direction perpendicular to the thermoelectric surface. In the direction parallel to the thermoelectric surface, the temperature profile shows a curved curve with the thermoelectric midpoint’s highest temperature. The temperature difference between the point parallel to the midpoint and the thermoelectric edge is 5°C. A temperature difference of less than 1°C is only obtained in an area 1cm wide from the thermoelectric midpoint position. This result suggests that a wider thermoelectric surface should be considered to obtain a wider area with uniform temperature.