(Translated from original letter)

 

OLCESA - COOSUR                 TARANCON-VILCHES - (Spain)
 

Vilches 18 December 2003

 

Dear Sirs,


After more than two years’ experience using the additive “rb bertomeu” beco F1/ASF in our cogeneration [power] plants at COOSUR in Vilches, Jaén province, and at OLCESA in Tarancón, Cuenca province, we have compiled sufficient real data to be able to calculate the reduction in fuel oil consumption attained by using this additive.  This reduction was estimated to be approximately 0.9% – 1.2 % in our letters of May 2002, which also gave details of a range of significant advantages that we observed when using this additive in both plants.

Both our cogeneration plants consist of two WARTSÏLA engines, type 12 V 46 B, with a power output of 10.5 MWhe each, running on fuel oil. The levels of fuel oil consumption per KWhe produced, before and after using the additive beco F1/ASF, are as follows:

 

Plant                          Year                  Fuel Type         Additive           Consumption(g/ KWhe)

COOSUR                 2000                   fuel oil              NONE                         201.5   

                                2001                   fuel oil              NONE                         201.6

                                2001                   fuel oil              beco F1/ASF                200.5

                                2002                   fuel oil              beco F1/ASF                199.8

                                2003                   fuel oil              beco F1/ASF                198.3 (-1.61%)

 

OLCESA                  2000-2001           fuel oil              NONE                         208.5

                                2002                   fuel oil              beco F1/ASF                201.8

                                2003                   fuel oil              beco F1/ASF                198.9  (-4.6%)

 

In the COOSUR Plant, even with engines perfectly adjusted in terms of fuel consumption prior to commencing the additive treatment, it may be observed that the use of beco F1/ASF has achieved a saving in fuel oil consumption of 3.25g/KWhe produced, equivalent to a saving of 1.61%. According to our calculations, which include measurements of the reduction in fuel sludge formed, this saving is due to:

        a) Improved utilisation of organic components of sludge as fuel:         0.40 %

        b) Improved combustion of the fuel oil:                                             1.21 %

 

In the OLCESA Plant, where the engines were not so well adjusted in terms of fuel consumption as those at COOSUR, it may be observed that the use of beco F1/ASF has produced a greater reduction in fuel oil consumption, to the extent that consumption falls to levels similar to those obtained in the COOSUR plant.  The resultant saving in fuel oil consumption comes in at either 9.6 or 8.15 g/KWhe produced, depending on whether the present consumption level is taken as that of the year 2003 or as the average for 2002 and 2003.  These values represent a saving in fuel oil of between 4.6 % and 3.9 % in comparison with the overall consumption levels prior to commencing additive treatment.  We consider this reduction to be due to several factors, including the reduction in fuel oil sludge, improved combustion of fuel oil, reduced deterioration of injection systems, etc.

We hereby authorise the circulation of this reference letter for use as you may see fit.

Best regards,

                                                                       Signature with Company Stamp

                                                                       Signed Josu Ortuoste

                                                                       Cogeneration [power] Plant Manager

                                                                       Engineer of the Merchant Navy