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Environmental Impact of Gas District Cooling: A Case Study of a Small Cogeneration Plant

Choon Lin, Voon (2011) Environmental Impact of Gas District Cooling: A Case Study of a Small Cogeneration Plant. Universiti Teknologi Petronas. (Unpublished)

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Abstract

Cogeneration is a better efficiency power generation technology compared to other traditional fossil fuel power plant. It uses heat engine or a power station to simultaneously generate both electricity and useful heat. Cogeneration consists of many types of technology and one of them is Gas District Cooling (GDC). In Malaysia, cogeneration technology has yet to catch up with only 5 GDC built but so far environmental impact of GDC has yet to be assessed. The objective of this project is to fill in that vacuum by assessing the environmental impact cause by GDC. The scope of this project will be observing and analysing the amount of C02, CO, NOx and SOx released by GDC and determine if it exceeds emission limit. Apart from the impact on surrounding temperature is also monitored to see if there is any rise in temperature due to the release of hot exhaust gas. The project mainly ipvolves gas samples being collected within GDC and analysed to see the composition of the gas. Then the temperature at the various distance from GDC are taken. The content of NOx and SOx in the exhaust gas is compared to European Union and United States emission standards and GDC if found to release both emission gases well below the limit. The data is also used to compare with readings from oil-fired and coal-fired power plants to show the reduction of NOx and SOx emission and it is found to release far less SOx than both types of power plants. The emissions of GDC working on full load and partial load are also compared where full load released more SOx and NOx however partial load is less efficient and released higher temperature exhaust gas since its heat energy is not extracted. For the surrounding the temperature, a graph of temperature and humidity in relation with distance from GDC is plotted and it is found to have minimal impact. All the results indicate that GDC is a clean and safe method to produce electricity.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Energy - Energy conversion - Boilers, heat recovery, cooling towers, etc.
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 30 Sep 2013 16:55
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/7351

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