Composites Significantly Reduce Energy Consumption:
Today, there is a tremendous amount of effort being put forth to reduce energy consumption. The DOE (Department of Energy) and the Hydraulic Institute have been working together to reduce the energy consumption of pumps, motors, and pump systems. This is where Composites can shine – they can significantly reduce energy consumption – in some cases as much as 20%, or more!
It starts with the basic concept of Composites:
SIMSITE® COMPOSITE COMPONENTS ARE CORROSION & EROSION RESISTANT:
The above chart clearly shows that Energy Costs dwarf any other expenses. In this case the Acquisition Cost is only 9% of the total Life Cycle Cost of just one pump. (60 HP x .746 = 44.7
KW x 8760 hours x .10/hr = $39,162/yr x 5yrs = $195,786) This is why the Department of Energy, Europump, and the Hydraulic Institute have recently focused on Pump Life Cycle Costs.
Simsite® Composite Upgrades not only reduce maintenance and repair costs, but they also can drastically reduce Energy Costs!
SIMSITE® COMPOSITES REDUCE ENERGY CONSUMPTION BECAUSE THEY DO NOT CORRODE!
The performance curve below clearly shows the huge drop in efficiency (Over 35%) when the bronze impeller cavitated, and corroded over a two year period in this pump, which operated in chlorinated water. Although the starting efficiency of the pump is good when the pump was new, this test clearly shows the rapid deterioration of the efficiency and performance as the pump continued to operate more and more inefficiently. The heavy losses of efficiency and performance could have been avoided by installing an Engineered Structural Composite Impeller and Rings, which would not corrode and would be cavitation resistant. The inefficiency of this pump contributed heavily to increasing the Energy, Maintenance, and Repair Costs of operating this pump!
TROUBLE FREE PERFORMANCE:
Composite Engineered Impellers offer tremendous advantages over
traditional products cast from metal, because they do not corrode, are
light weight, can run with tighter clearances, are designed for high
efficiency, and are not subject to casting defects or imperfections. Structural Composite Impellers also offer
perfect balance, both mechanically and hydraulically, tremendous
mechanical strength, and corrosion, erosion & cavitation resistance.
Many of these Impellers and Casing Rings have been used successfully
since 1955, in the Marine, Navy, Waste Water, Industrial & Chemical
markets. Structural Composite Impellers, like SIMSITE® Impellers, have outlasted and outperformed products manufactured from
bronze, stainless steel, duplex steel, monel, and even titanium.
SIMSITE® COMPOSITES REDUCE WEAR AND IMPROVE EFFICIENCY
SIMSITE® COMPOSITES HAVE A LOW COEFFICIENT OF FRICTION:
COEFFICIENTS OF FRICTION:
As you can see from the above graph, most composites have a lower coefficient of friction than the traditional metallic materials; (Bronze & Stainless Steel) that have been used in pumps. Structural Graphite Composites and Engineered Composites have the lowest coefficient of friction – lubricated or non-lubricated. The low coefficient of friction reduces the friction losses of the liquid being pumped, which allows for an increase in efficiency and a reduction in energy consumption.
Coatings have been used to coat pump casings, which not only protects
the casings against corrosion and erosion, but also smoothes the rough
surfaces, which reduces friction and thus increases efficiency. Some
studies have shown that efficiency can be improved by as much as 2% to
3% by using Composite Rings, Guide Bearings, and Coatings.
SIMSITE® COMPOSITES ARE CORROSION AND EROSION RESISTANT:
Since many composites are impervious to different corrosive environments, these composite wear components will not corrode, or erode like metallic components. Although composite wear components will reduce energy consumption for all pumps, including all fresh water services, the greatest savings will occur in corrosive environments such as salt water, waste water, chlorinated water, and chemical process, because the composites are corrosion resistant and in many cases will not corrode at all.
metallic pump parts begin to wear from corrosion, pump efficiency drops
drastically. This drop in efficiency not only has a significant impact
on Energy consumption, but it also significantly increases the cost of
maintenance, repairs, and overhauls. The life cycle of the pump is often
reduced to months instead of years.
Corrosion Resistance Chart:
* As you can see from the above chart, Composites do not corrode in Salt Water, or Waste Water, and are excellent with chemicals that are compatible with the composite.
SIMSITE® ENGINEERED COMPOSITE IMPELLERS:
According to the U.S. Department of Energy (DOE), many centrifugal pumps may be less than 50% efficient but have the potential to improve by 20-30% through various upgrades and system changes.
Pump Upgrades not only improve performance, maintenance and repair issues, but they also improve efficiency as well, so they will extend pump life and reliability. Pump Upgrades prevent expensive products from deteriorating; they can even prevent pump leaks that can result in costly cleanups and fines from regulatory agencies. In most cases,
reduced downtime eliminated by the pump upgrade outweighs all other benefits.
In difficult times, it may be hard to allocate the funds for the upgrades, but the payback for doing pump upgrades is extremely quick. The resulting savings from the upgrades frees up funds that otherwise would have been wasted on energy, and more expensive repairs at a later date. In almost all cases, the incremental costs of upgrades are minimal when compared to the loss in downtime and expensive repairs.
Plant Outages, Ship Overhauls, Building New Vessels, Building New Manufacturing Plants, Plant Expansions, and New System Installations are good opportunities to specify pumps with upgraded efficiency and reliability features such as Simsite® Structural Graphite Composite Pump Internals (Impellers, Casing Rings, Sleeves, Bushings, Bearings, and Mechanical Seals).
The above graph shows that changing the Bronze Impeller to a Simsite® Structural Composite Impeller increased efficiency 15.8% ! The efficiency on this 20 KW pump (26.8 HP) went from 57% with a metallic impeller to 66% with a structural composite impeller – an increase of 9 points or 15.8% ! At 0.11 cents per kilowatt hour this translates into a yearly savings of $2,218.00 per year, per pump! After only 1 year of service in a corrosive environment such as salt water, the metallic impeller, which was originally bronze, begins to corrode, which further reduces efficiency. Depending on the service, and the temperature of the salt water, and how the pump was operating, the efficiency will be reduced by as much as 5% to 7%, or more, resulting in additional energy costs! Upgrading to a Simsite® Structural Composite Impeller will not only increase efficiency 15.5% from the start, but will also prevent the losses in efficiency as a result of corrosion resulting in a total saving to the Customer of more than 20%! This results in a yearly savings of $4,155.00 per year per pump!
LOWER COSTS – INCREASED PERFORMANCE:
The new alternative composite solutions for Impellers and Rings are excellent for new, repair, or retrofit applications. They are light weight and virtually indestructible. Wear of other pump parts including the pump casing are greatly reduced, because of the Impeller's perfect balance, light weight, self-lubricating, sealing, and corrosion, erosion, & cavitation resistance. This means far less expense for replacement of parts, downtime, and years of trouble free performance. When you reduce or eliminate corrosion, erosion, and cavitation, you automatically increase efficiency and substantially reduce energy efficiency and costs.
It is an all too common problem – You purchased a pump for one specific performance and when you put the
pump into service in your plant, or ship, the pump operates at another
point completely different from the original design point (BEP – best efficiency point) of the pump because of your system requirements.
In addition to being very inefficient, when you operate the pump away
from the original design point or BEP, it causes a multitude of
problems. These problems include excessive noise & vibration
of the pump, shaft oscillation, cavitation, premature wear and failure
of the mechanical seals, bearings, rings, sleeves and impellers. In
extreme cases, the pump shaft will break.
Fortunately, these problems can be easily resolved by installing Simsite® Alternative Solution Impellers & Rings, which have been re-engineered for your system requirements. Not only is the efficiency of the pump improved, but also the reliability and longevity of the complete pump is substantially improved.
SIMSITE® COMPOSITES OFFER AN IMPROVEMENT OVER TIME:Because of the self lubricating characteristics of many engineered composites, and because composites do not wear, or corrode, like metallic pumps, the performance curve will actually increase over a period of time. The chart below shows test performed by Warren Pumps on a US Navy Standard Fire Pump manufactured from Titanium. A 1000 hour performance test was performed with a SIMSITE® Engineered Structural Composite Impeller and Casing Rings. The result clearly showed a substantial increase in the H-Q (Head-Capacity) Curve – 2.5% with the SIMSITE® Composite Impeller and Rings at the end of the 1000 hour Endurance Test.
SIMSITE® COMPOSITE IMPELLERS WILL IMPROVE EFFICIENCY OF YOUR EXSISTING PUMP:
The Impeller is the heart of any Centrifugal Pump. Like a human heart, a pump impeller is the most loaded pump component, constantly stressed by hydrodynamic forces, fatigue, corrosion, erosion abrasion, chemical attack, and cavitation.
The overall Efficiency of a Centrifugal Pump is in direct correlation to the Efficiency of the Impeller. The Impeller's hydraulic design must correspond to the
hydraulic design of the pump Casing and to the Operating Conditions of the pump in service (In the Plant) in order to maximize efficiency.Companies like SIMS in Hoboken, N.J. specialize in the designing, engineering, and the manufacturing of Premium Efficiency Structural Composite Simsite® Impellers, and Pumps. Any Centrifugal Pump fit with the Premium Efficiency Simsite® Structural Composite Impeller will save a tremendous amount of money for the Pump Owner and Operator in Repair and Maintenance Costs as well as in Energy Consumption. This saving comes from Electrical Saving, (a higher efficiency pump consumes less energy), and from Saving on Maintenance and Repair (the pump fitted with a SIMSITE® Impeller will have a much longer life and a smoother run time), because the Structural Composite Impellers will never corrode.
SIMSITE® COMPOSITE IMPELLERS ARE DESIGNED FOR SUPERIOR HYDRAULIC PERFORMANCE:
Because the new alternative Simsite® structural composite Impellers are computer engineered, designed, and precision machined, the impeller vane geometry can be engineered utilizing CFD (Computerized Fluid Dynamics) techniques and programs to maximize efficiency and performance. Problems such as recirculation, radial thrust, and cavitation can be minimized, or eliminated, by using structural composite impellers instead of the traditional metallic ones. Impeller vane shapes can easily be modified to provide the best vane shape for specific applications and performance requests.
SIMSITE® COMPOSITE IMPELLERS ARE LIGHT WEIGHT & REDUCE SHAFT DEFLECTION:
Another critical area where composites significantly help in the reduction of Energy Consumption and Repair and Maintenance is in the area of shaft deflection. Structural Composites Impellers & Casing Rings like Simsite®, manufactured by SIMS, are only 15% the weight of traditional metallic materials. The lower weight not only reduces start-up load, but also reduces shaft deflection, which allows the rotating element to run with tighter clearances between the rings and the impeller. The tighter ring clearance reduces leakage, which increases efficiency and reduces energy consumption. The reduction in shaft deflection reduces vibration, and increases efficiency. The reduction in shaft deflection enables bearings, sleeves, mechanical seals, and rings to last much longer which saves on repair and maintenance costs.
y = deflection, in ; W = weight of rotating element, lb ; L = shaft span, in;