Quantitative analysis of industrial carbon emission and strategies for carbon reduction

Abstract

This study intends to estimate carbon emission from energy consuming sources at garments industries in Bangladesh and to represent some strategies for Greenhouse Gas (GHG) reduction i.e. CO2e emission reduction. The thesis work has been carried out by collecting data from different garments industries in Bangladesh through field visit. The collected data has been verified and after analyzing all data, current GHG emission i.e. CO2e emission from garments industries has been quantified. IPCC Tier 1 approach has been followed for quantifying GHG emission from direct onsite fuel combustion and Tier 2 approach has been applied for quantifying the emissions from purchased electricity.

After estimating the existing CO2e emission, some cost effective carbon management techniques such as installation of VFD in compressor, installation of LED light instead of T5 and T8 fluorescent tube light, installation of EGB, installation of economizer in boiler, condensate recovery, auto blow down, setting of servo motor in sewing machine, switching off unnecessary light during day time, repairing air leakages, installation of G trap in steam iron, insulation of hot surfaces have been suggested to reduce the carbon emission at RMG sector.

The result of this study indicates that the garments industries emit about 0.89 kg/pc specific CO2. By adopting different carbon reduction strategies the garments industries could cut their existing carbon emission by about 15.26% and thus the benchmark of specific CO2 emission would be about 0.74 kg/pc. Besides this the garments industries could save about 12.61% energy and the benchmark of specific energy consumption would be11192 KJ/pc in average. Carbon reduction at garments industries will help to reduce national CO2 emission of Bangladesh and it will ultimately contribute to reduce global warming. By taking carbon reduction measures, it is also possible to improve energy efficiency and cut cost at garments industries.