Energy consumption, energy saving and emission reduction of a garment industrial building in Bangladesh

The industrial sector is the biggest energy consumer in Bangladesh. Electric motors account for more than 45% of the electricity consumption in the industrial sector in the country. A walk through energy audit has been conducted at Garments in Bangladesh to identify the energy using equipment and energy consumption breakdown. Different energy saving strategies and emissions reduction has been estimated for the garment. It is also found that about 137,003 kWh, 319,673 kWh and 502,343 kWh of energy and BDT 1,312,484, BDT 3,062,463 and BDT 4,812,442 of bill savings for 20%, 40% and 60% speed reduction by using variable speed drive (VSD) respectively. By using high efficiency motors (HEM), about 28,311 kWh, 41,713 kWh and 57,080 kWh of energy and BDT 271,242, BDT 399,574 and BDT 546,852 of bill can be saved for motor loadings of 50%, 75% and 100% respectively. The payback periods of different energy saving strategies indicated that HEMs seems cost-effective. Both HEMS and VSD more cost effective for large motors. It is also found that huge amount of emissions can be reduced for different energy saving strategies applied in garment.