Low watt density option

Our company strategy or motto has always been to make the a product that is
  • reasonably priced
  • easily repairable
  • and reliable.
 
MODEL CFLWD 72 KW


We expect the customer to use the product for a significant period and continually review ways to make the product better.  Low watt density elements are the most recent addition to this process.

Elements fail primarily because they are not cooled properly by the fluid flowing past them or the sheath is ruined by an agent in the water.  The low watt density elements address the improper cooling issue and not impurities in the fluid being heated.  We do offer titanium sheathing for increased chemical resistance in our CERO line.  Improper cooling can occur due to a significant air pocket or supply shut off.  But, a much more likely cause of failure is the development of hot spots on the sheath that do not allow the fluid to cool the element.

The low watt density elements significantly add to the elements useful life because they operate at a cooler temperature since they have more space to deliver the heat to the fluid being heated.  As a result, the gradual mineral buildup on the elements that occurs over time during the heating process is reduced.  This lessens the chance of hot spots on the sheath which increases the useful life of the element.

Until recently the lower watt density elements were extremely expensive and so large they would not fit in a compact unit.

We found a product that we are satisfied does the following
  1. Lasts ten times as long in the case of a water supply outage as the higher watt density product.  We did destructive tests in our plant at both a cold start and a hot start to allow us to make this representation.
  2. Lasts what we expect to be three times as long in a long run usage setting because of its resistance to hot spots on the element created by mineral buildup and the fact that the elements normal usage temperature is much lower than the high watt density element.
The low watt density element is provided with our standard 800 incoloy sheath, operates between 60 and 85 watts per square inch depending on unit size, and is available only on our 480 Volt and 575 Volt units.

The schedule below shows the following
  1. the unit sizes where this feature is offered
  2. the added cost of this and other options
  3. new and old enclosure sizes and weights and
  4. mode of shipping.
In our opinion the units added longevity far outweighs the added costs.


Model Original
Box Size
Original
Weight
Shipping
Mode
Box Size with
Low Watt Density
Elements
Weight Shipping
Mode
Other Options
that also
must be added
Original
List Price
LWD
Option Price
Other
Required
Option Price
List Price
 with LWD
Option
                       
CF 48 KW 14.75 x 30 x 9 78 UPS 25 x 30 x 9 115 Skid, LTL N/A $4,150 $1,440 $0 $5,590
                       
CF 54 KW 4.75 x 30 x 9 78 UPS 25 x 30 x 9 115 Skid, LTL N/A $4,300 $1,440 $0 $5,740
                       
CF 72 KW 4.75 x 30 x 9 78 UPS 25 x 30 x 9 115 Skid, LTL N/A $4,650 $1,440 $0 $6,090
                       
CF 108 KW 25.5 x 24 x 9.25 125 Skid, LTL 36 x 48 x 12 300 Skid, LTL NEMA 4 Enclosure
Kill Switch
$6,350 $2,160 $3,900 $12,410
                       
CF 144 KW 36 x 48 x 12 350 Skid, LTL 36 x 48 x 12 425 Skid, LTL Kill Switch $9,775 $2,880 $1,500 $14,155
                       
CE 48 KW 16 x 32 x 8 80 UPS 26 x 32 x 8 120 Skid, LTL N/A $5,020 $1,440 $0 $6,460
                       
CE 54 KW 14.75 x 30 x 9 78 UPS 25  x 30 x 9 115 Skid, LTL N/A $5,175 $1,440 $0 $6,615
                       
CE 72 KW 14.75 x 30 x 9 78 UPS 25 x 30 x 9 115 Skid, LTL N/A $5,625 $2,880 $0 $7,065
                       
CE 108 KW 36 x 36 x 12 350 Skid, LTL 36 x 48 x 12 425 Skid, LTL NEMA 4 Enclosure
Kill Switch
$9,420 $2,880 $2,700 $15,000
                       
CE 144 KW 36 x 36 x 12 350 SKid, LTL 36 x 48 x 12 425 Skid, LTL NEMA 4 Enclosure
Kill Switch
$9,990 $2,880 $2,700 $15,570
                       





 

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