Aerovit A/S - Aerovit Case story

Manual cleaning before, 26 times annually.	Manual cleaning, eight hours every 14 days. Downtime: 24 hours for each boiler cleaning.
Manual cleaning after, 4 times annually.	After installation of AEROVIT: Four times annually, 90 minutes each.
Downtime per year	Without AEROVIT: 26 x 24 hours = 624 operating hours. With AEROVIT: 4 x 24 hours = 96 operating hours. Gained operating time 528 operating hours ~ saving of 84.6%.
Working hours, cleaning	Without AEROVIT: 26 x 8 hours = 208 working hours. With AEROVIT: 1.5 x 4 hours = 6 working hours. Available working hours: 202 working hours ~ saving of 97.1%.
Annual efficiency	AEROVIT increases the annual efficiency of the installation by approx. 8 %.
Valuation	By continual full load: 528 gained operating hours x a sales price of 200 DKK/MWh results in: 528 h x 200 DKK/MWh x 2 MWh = 211.200 DKK, moreover savings of 202 h x 200 DKK = 40.400 DKK (overall savings 251.600 DKK). Further to this is the improved efficiency.
Investment	It cost 170.000 DKK to install the AEROVIT system.
Payback time	The investment is paid back in approx. six months.

Bo Vernegren, Operating Manager

at DLG, says,

"The AEROVIT soot-blowing system has provided DLG with definite improvements.

The boiler operating time has improved significantly, and the man hour costs have been reduced correspondingly.

At the same time, the boiler capacity has increased drastically, in particular during the last period before each cleaning.

After having installed the AEROVIT soot-blowing system we have seen the installation working with a stable low pressure and with optimum flue gas cooling.

It is an important factor for the impact that the soot-blowers work at 8 bar. We are now able to decide for ourselves when the boiler installation should be taken out of operation for inspection and service."

AEROVIT soot-blowing system installed on the front of the Danstoker Multimiser No. 19