Development Of Self-Powered Thermoelectric Based Cooling System For LCD Panel

Goh, Siew Yun (2016) Development Of Self-Powered Thermoelectric Based Cooling System For LCD Panel. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, electronic systems or devices have became part of our life. All of the electronic systems or devices will dissipate heat while heat dissipated affecting the functionality and lifetime of the system or devices. However, the heat dissipated can be converted from one form to anther and thus turning the waste energy into useful energy. Thermoelectric generator (TEG) is a generator which converts heat energy to electrical energy. In this project, TEG will be used to minimize the heat that generated from the electric system. Firstly, heat dissipated is characterized from 85" inch Thin-film-transistor liquid-crystal display (TFT LCD) from Quantum Electro Opto System Sdn. Bhd. Heat dissipated from power board of LCD panel is collected and compared with thermal analysis from different size of LCD panel. After that, hotplate is used to simulate the heat dissipated for LCD panel. TEG is placed between hot plate and heat sink to generate voltage output. After that, power conditioning circuit is designed to boost up the voltage generated from the TEG. In this project, power conditioning circuit is a combination of Multivibrator and Charge Pump circuit. Output voltage from the power conditioning circuit is used to power up wireless electronic devices for the application of triggering cooling system. This mechanism is referred to as self-powering whereby the RF transmitter is powered by the heat itself without necessary to use battery. After RF transmitter turned on, RF signal will send to RF receiver to trigger on the cooling fan on receiver station.

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