Heat Recovery System
Flue Gas Heat Recovery System
The existing gas fired steam boiler with a capacity of 5 ton/h has been installed without any flue gas heat recovey system in food and beverage industry. Therefore, during energy audit, economiser as feedwater preheating was proposed to be installed for feedwater preheating.
After the project was implemented, the average gas saving up to 536 MWh annually. Gas saving rate equivalents to 4.3%.
Payback period: 1.5 years
GHG emission reduction: 107 tons CO2 per year
Heat Recovery System in Series
The existing gas fired steam boiler with a capacity of 10 ton/h with its steam distribution has been installed without waste heat recovey system. During steam audit, it was identified to recover the waste heat from blowdown, flash steam, and exhaust gas. Therefor, it is important to install waste heat recovery system in series as feedwater preheating.
After the project was implemented, the average gas saving up to 1,473 MWh annually. Gas saving rate equivalents to 6.0%.
Payback period: 1.6 years
GHG emission reduction: 295 tons CO2 per year