The existing and outdated Hamworthy burners had a turn down of 3.5:1 on oil which subsequently added to boiler recycling and maintenance issues.
The new Oilon burners have Variable Speed Drives operating the FD fan giving around a 50% saving on the running of electrical costs for the burners. On top of this, a state of the art Ecosafe Digital Burner Management System delivered further savings of around 1%.
All the new Oilon upgrades achieved a turndown of up to 10:1 on gas and 4:1 on oil, generating fuel savings of up to 5%. The new burners achieved a high combustion efficiency through accurate fuel/air mix, alongside a high turndown ratio, resulting in low excess oxygen levels across the full turndown range.
An additional benefit was the use of a constant velocity combustion head, which maintained the air flow velocity throughout the firing range and optimized the O2 levels. Further savings of 1% in fuel were achieved by installing an oxygen trim system.
The new equipment is estimated to save the company a substantial amount with a very quick Capital repayment.