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The objective of this project is to design a confined space which can heat or cool the items as required. The mechanism used for cooling and heating is the Peltier Effect Device whereby a normal refrigerant (e.g. gases or water) as the thermal media is not used in the design. Peltier effect device are made of an N and P type semiconductors that are joined together by metal contact to form a junction that can perform cooling on one side while heating on the other side. The literature review aids better understanding of the project title. Analysis stage helps in problem solving thus decision making process. Tools identification is essential to determine the equipments and software needed in this project. The project is developed using a set of defined procedures and is illustrated more vivid in a logic flowchart. H-Bridge circuit analysis has been carried out with the calculated values of resistors in order to obtain the fmal working circuit. The temperature controller will consists of temperature sensor which is LM35 and microcontroller PIC 16F877. The coding of the PIC program has been finalize and progranuned. Heat transfer calculation has also been calculated. The container that will be used for the prototype is 400ml thermos with double wall for temperature retention. The Peltier is attached at the lid of the container where a hole has been made. The temperature sensor is placed near the Peltier. Between the Peltier and the heat sink, thermal paste is applied evenly to help removing the heat faster. Then, a 12V fan is glued on top of the heat sink. This prototype can cool down to 1 ooc for cooling and go up to 60°C for heating.

Item Type: Final Year Project
Academic Subject : Academic Department - Electrical And Electronics - Pervasisve Systems - Microelectronics - Device Characterisation
Subject: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Engineering > Electrical and Electronic
Depositing User: Users 2053 not found.
Date Deposited: 21 Oct 2013 15:17
Last Modified: 21 Oct 2013 15:17
URI: http://utpedia.utp.edu.my/id/eprint/9302

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