Värnamo              Boiler 1             Mounting of an AEROVIT system August 2005

Size                         12 MW                Before the boiler had to be cleaned every 6. week.

Fuel                         Wood chips         The flue gas temperature was on a clean boiler 210°C.

Consumption            28.000 t/year      The manual cleaning was executed by 250°C.

Running time            5.833 h/year                                                    

Evaluation of the AEROVIT systems effect From 28 Nov. 2005 to 28 April 2006 the boiler is running full load. In that period the flue gas temperature increased by 30°C. Without AEROVIT:    manual cleaning 6 times/year With AEROVIT:         manual cleaning 1-2 times/year With 1% savings on fuel consumption and increased boiler efficiency and with 60% fewer manual cleaning the result will be: The investment DKK 273.000 is paid back after 16 months. Rate of return/year at average: 77 %.

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Värnamo           Boiler 2                 Mounting of an AEROVIT system September 2005

Size                      10 MW                     Before the boiler had to be cleaned every 6. week.                              

Fuel                      Wood chips              The flue gas temperature was on a clean boiler 155°C.

Consumption         22.000 t/year           The manual cleaning was executed by 200°C.

Running time         5.000/year

Evaluation of the AEROVIT systems effect From 11 Nov. 2005 to 27 March 2006 the boiler is running full load. In that period the flue gas temperature increased by 27°C. Without AEROVIT:   manual cleaning 6 times/year With AEROVIT:        manual cleaning 1-2 times/year  With 1% savings on fuel consumption and increased boiler efficiency and with 60% fewer manual cleaning the result will be: The investment DKK 275.000 is paid back after 16 months. Rate of return/year at average: 77 %.

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Rörvik               Boiler 1                  Mounting of an AEROVIT system September 2005

Size                   6 MW                       Before the boiler had to be cleaned 10 times/year.

Fuel                   Wood chips               The flue gas temperature was on a clean boiler 165 °C.

Consumption      12.800 t/year           The manual cleaning was executed by 200-210 °C.

Running time      5.333/year          

Evaluation of the AEROVIT systems effect Within 1 year the flue gas temperature increased with 10 °C. Without AEROVIT:       manual cleaning 10 times/year With AEROVIT:            manual cleaning 1 time/year With 1% savings on fuel consumption and increased boiler efficiency and with 90% fewer manual cleaning the result will be: The investment DKK 193.000 is paid back after 15 months. Rate of return/year at average: 83 %.

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Älmhult              Boiler 1            Mounting of an AEROVIT system August 2004                                      Size                      5 MW                     Before the boiler had to be cleaned 9 times/year                                  

Fuel                      Wood chips             The flue gas temperature was on a clean boiler 160 °C

Consumption         11.200 t/year          The manual cleaning was executed by 190 °C

Running time         5.600/year

Evaluation of the AEROVIT systems effect Within 1 year the flue gas temperature increased with 10 °C. Without AEROVIT:        manual cleaning 9 times/year With AEROVIT:             manual cleaning 1 time/year With 1% savings on fuel consumption and increased boiler efficiency and with 89% fewer manual cleaning the result will be: The investment DKK 215.000 is paid back after 17 months. Rate of return/year at average: 71 %.

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Operating personnel says:

"For our District Heating plants the AEROVIT sootblowing system has implied significant savings and advantages.

It also implies that we now are completely free to clean the boilers when the weather and the personnel / interest 

suit us".