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Raihan Uddin Ahmed Environmental Specialist
Infrastructure Development Company Limited (IDCOL), Bangladesh
Stakeholder Consultative Workshop
Pan Pacific Hotel Sonargaon, Dhaka, Bangladesh
25 February 2016
Promoting Energy Efficiency in Textile Sector: perspective of Energy Efficiency and Conservation Master Plan 2030, Bangladesh
Snapshot of Textile and RMG in Bangladesh
Growth of Textile & RMG industry
“Bangladesh’s garment exports increased
from USD 6.8 billion in 2005 to USD 19.9
billion in 2012, recording a compounded
annual growth rate (CAGR) of 16.6
percent. The remarkable success of
readymade garment exports from
Bangladesh over the last 15 years has,
despite varied domestic and global
challenges, not only surpassed the most
optimistic forecast, it has also made us
confident to think of big gains in the future.
Today apparel export stands at USD 24
billion and it seems this labour-intensive
industry is set to exceed the USD 50
billion mark within the next 7 years.
The overall impact of readymade garment
exports is certainly one of the most
significant social and economic
developments in contemporary
Bangladesh. With over five million
workers (60 percent women) employed in
semi-skilled and skilled jobs in producing
garments for exports, the development of
the apparel export industry has had far-
reaching implications for the society and
economy. Its contribution to women
empowerment is well recognised globally
and is the subject of numerous studies.” The Daily Star, 10 March 2015
Main modes of Textile and RMG production
Energy consumption by sectors
Energy use pattern in Textile Industries
Thermal energy use pattern in textile industry
Electrical energy use pattern in textile industry
Textile and RMG in Energy Efficiency and Conservation (EE&C) Master Plan 2030
Adoption/improvement of: spinning machine, air Jet Loom (Weaving machine), sewing machine, efficient lighting, gas engine waste heat recovery, gas turbine cogeneration, steam boiler waste heat recovery, steam boiler combustion control, once-through steam boiler, high efficient stenters, etc. Current energy consumption is 3,740 kTOE/year which could be 1,159 kTOE/year.
Targeted coverage ratio of energy efficiency by industrial sectors
Scope of energy efficiency in Textile and RMG
Improving efficiency of electricity use
◦ Lighting-
◦ Electric motor-
◦ Electric heating
Application of
high capacity
motors than
actually
required
Steam & gas
Direct & indirect
Infra-red
H-F dielectric
Microwave
Scope of energy efficiency in Textile and RMG
Improvement in efficient fuel use
◦ Selection of fuel
◦ Selection of boiler
Traditional boilers are about 50% energy efficient, which could be made
About 95% energy efficient.
high calorific
value
proper ignition
temperature
not produce
poisonous
products during
combustion
moderate rate
of combustion
combustion
should be easily
controllable
low moisture
content
low impurities
Scope of energy efficiency in Textile and RMG
Improving efficiency of electricity use ◦ Piping- to reduce steam losses due to heat radiation from steam transportation pipes
and pressure drops by high pressure and small diameter piping. ◦ Steam accumulators- to install a steam accumulator between boiler and heat consuming load to transform the heated water back to steam. ◦ Recycling of drain-usually after consumption of heat energy, steam is drained off., which can be collected and recycled the heat energy carried by the drain water.
◦ Utilization of heat exchanger-ensure application of proper heat exchanger for intended purpose.
Measuring instruments and automatic control
◦ Energy saving is an operation to grasp the actual situation of energy use in a factory precisely and quantitatively and to carry out improvement measures in order to rationalize and economize it.
Recommended measures in light of EE&C Master Plan 2030
Once-through boiler
Gas turbine
cogeneration
Efficient lighting (LED)
High efficient weaving
machine
Exhaust heat recovery
Implication of energy efficient initiative
Implication of energy efficient initiative
