Engine & Turbine Technology
With E12 efficiency we have taken the step into the “clean-room” world which gives operation periods of 2-3 years between shutdowns. But even taking the step to go from the F8/9 ‘standard’ to the today very common E10 is a huge improvement for the operator. Higher efficiency, however, also requires a matching
pre-filtration and a filter house that makes sure no air is by-passed in flanges, gaskets etc. Te previous pre-filter standard of G4 is not adequate protection for an E-class filter, so depending on final efficiency class, pre-filtration of F6 to F9 will be required to make sure pressure drop development and maintenance cycles are keeps at matching levels. Which combination to select is off-course finally depending on local conditions but common filter combinations today are:
Pre-filter(s)
F6 alt. F7 F7
F6 alt. F7 + F9
Examples on above are: Pre-filter
Final filter
Final filter F9
E10 E12
Camfil Farr CamFlo XMGT F6-8 Camfil Farr CamGT F9, E10 and E12
We can conclude that: ● Te costs of fouling far exceed the cost of eliminating it.
● Tere are proven filter systems on the market that allows GTs to operate 2-3 years without shutdowns at maintained efficiency.
● Te complete system has to be reviewed including weather protection, prefiltration and tightness of frames and housing. ●
Enter 41 or ✔ at
www.engineerlive.com/ipe
Peter Sandberg is CEO, Camfil Farr Power Systems, Boras, Sweden.
www.camfilfarr.com
P Bearing isolator solution for lubrication loss and contamination ingress
remature and unnecessary bearing failure on rotating equipment, such as motors, pumps, pillow blocks, steam turbines and gearboxes, can contribute to costly downtime and maintenance headaches along with labour, safety and environmental concerns in the power generation industry. Oil leakage and contamination ingress
are the most common reasons for bearing failure in the power generation industry. Ineffective sealing on the bearing housing of rotating equipment allows for the passage of lubrication out of the equipment and contamination into the bearing housing. Lubrication loss causes the bearings to seize up when the oil or grease level gets to low and also create maintenance and safety issues within the plant. Contaminants entering the bearing
housing will mix with the lubrication and create an abrasive environment for the bearings to operate. The Inpro/Seal Bearing Isolator is a
permanent solution for both lubrication loss and contamination ingress. Its patented design is a two part dynamic seal consisting of a rotor and stator that interact to permanently seal the bearing housing from the outside environment. The Inpro/Seal Bearing Isolator is non-
contacting and non-wearing and will last the lifetime of the equipment. Custom engineered to meet the exact specifications of the equipment; they can ship same day to help alleviate the high cost of downtime. ●
Enter 41A or ✔ at
www.engineerlive.com/ipe
Fig. 1. The Inpro/Seal Bearing Isolator is a permanent solution to seal against lubrication loss and contamination ingress on rotating equipment in the power generation industry.
Inpro/Seal is based in Rock Island, IL, USA and Glasgow, UK.
www.inpro-seal.com
www.engineerlive.com 41
Fig. 2. Fouling in real life. Fouling can result in a reduction of power output and an increase in heat rate for a given combustor outlet temperature.
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