Thermoelectric-Peltier Effect-Cooling

1990 Words8 Pages
Modelling and Simulation of Thermoelectric - Peltier Effect - Cooling Unit Vineet Mathew1, Akhilesh Arora2, Saurabh Dubey3, Rayhan Ali4, Sushant Sahasrabuddhe5 1,2,3,4,5Delhi Technological University, Delhi-110042 Abstract— TECs (Thermoelectric Coolers) have been under commercial use since the 1960s. Being a Freon free technology with the added advantage of flexibility in mounting position and precise temperature control, TECs are being used across a variety of cooling applications. The relatively lower efficiency compared to conventional cooling systems is neglected owing to its portability and pollution free nature. The greatest advantage a Peltier Effect Cooler possesses is its miniature size and light weight making it easy to transport.…show more content…
INTRODUCTION Thermoelectric effect refers to the conversion of voltage difference into a temperature gradient or vice-versa. Conversely, a temperature difference will generate a voltage difference. Therefore, by connecting a TEC to a power source, a temperature difference can be generated on either side of the TEC. The thermoelectric effect can be used to generate electricity, measure temperature and also act as a temperature regulator as the hot and cold side of a TEC can be interchanged as it is dictated by the polarity of the applied voltage. The Thermoelectric effect encompasses mainly two effects, The Seebeck effect and the Peltier Effect. The Peltier effect is named after French physicist Jean Charles Athanase who discovered it in 1834. It is the generation of a hot and cold side at an electrified junction of two different conducting materials. When a current is made to flow through a junction between two conductors A and B, heat may be generated (or removed) at the junction. The heat generated at the junction per unit time, , is given…show more content…
This is the temperature of the Hot Side and Cold Side of the Peltier Module. On further examination in the temperature range of 30degC to 38degC (Fig 3) the penetration of the Cold Side temperature of the Peltier Module can be visualized. Velocity Contours in the Z direction (along the model) in Fig 5 show regions of reverse flow (positive values). Further resolution in the reverse flow range can be seen in Fig 6. Reverse flow is generated at the top and bottom of the heat sink which is expected because of the air flow due to the intake fan. A region of reverse flow is also generated right after the cold
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