Efficient Energy

As we welcome the return of Ivan Banks from a lengthy trip overseas, I’m reminded of the wide cultural variety over which we supply our products.  Reading through the travel brochures and noting the different customs proves to be a stark reminder of how isolated it can be to live within your comfort zone.

There’s a quote by Robert Louis Stevenson that says, “There are no foreign lands.  It is the traveler only who is foreign.”  Reading through expected differences on the CIBT website has shown me that this is indeed the case.  I like to relate this to a method of thinking as well.

We’re often taught how to do something and it can be strange to see things done in a different way.  In industry, however, we’re always looking for a more economical and efficient process to achieve the end goals.  It’s a frequent occurrence to see something pieced together in an ingenious way, or in a much different manner than would be expected.

Fortunately, along with the worldwide appreciation for ingenuity, there is also an appreciation for efficiency.  This has helped EXAIR to be transparent across multiple cultures and markets.  Our efficiency lab is a prime example of our efficiency appreciation, as well as a variety of posts by our very own, Professor Penurious.

Earlier this week I ran a calculation for an application currently using a 20 horsepower blower system to clean steel tanks.  The system was inefficient, and the results were poor.  The application needed a blow off with higher force and a more efficient use of the plant energy.  We were able to propose multiple setups of EXAIR Super Air Nozzles or Super Air Knives to accomplish the necessary blow off.  And, the operational cost of any EXAIR system was almost half that of the blower system.  (Approximately $2500.00/yr. to operate the blower system vs. approximately $1400.00/yr. to operate the EXAIR blow off components)  In addition to lower operating cost, the EXAIR products had a lower purchase price as well.  Just another prime example of the benefits to an EXAIR equipped blow off system.

We run calculations like this with great frequency.  And we do this for applications all over the world.  Efficiency and cost savings are a language everyone seems to speak.

The following calculations show electrical cost for operating a 20 Hp blower and do not include any maintenance costs associated with blower maintenance such as bearing replacement. The cost for generating compressed air ($0.25/1000 cubic feet) includes electrical costs and maintenance costs.

20 HP Blower  = 14.71 kW
14.71 kW x 0.083 = Operational cost per hour
14.71 kW x 0.083 = $1.22 per hour
1.22 cents per hour x 40 hours per week =$48.80
$48.80 per week x 52 weeks per year = $2537.60
Annual operating cost = $2537.60   

EXAIR Blow off (55 SCFM)
55 SCFM x 60 minutes = 3300 SCF/hour
3300 SCF x 40 = 132000 cubic feet per week
132000 x 52 = 6,864,000 cubic feet per year
6,864,000/1000 = 6864     6864 x $0.25 = $1716.00
Annual Operating cost = $1716.00

Operating costs based on electricity cost of 8.3 cents per kWh.  Annual cost reflects 40 hours per work week, 52 weeks per year.

(For those interested, the photo is of a concept to allow charging of a cell phone battery by swinging the battery around your finger.  Designed by Song Teaho & Hyejin Lee)

Lee Evans
Application Engineer

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