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Tips to Reduce corrosion in Sea Water Pumps

Don’t Let Corrosion Eat Away your Sea water Pumps Steps to Tackle Corrosion & Keep your Pumps functioning efficiently All desalination operations make use of water pumps. They use either submersible pumps for seawater intake or to sea water pumps the desalinated water to storage. Irrespective of the type and size of the pumps, you have to ensure that it lasts for a long time. Keeping Corrosion at Bay Makes the Pump Healthy One of the biggest hurdles faced by all sea water pumps is “Tackling Corrosion.” Corrosion wears down the critical components of a pump, thereby taking a toll on its lifespan. Apart from decreasing the durability of pumps, corrosion can also wreck havoc to the operational efficiency. Hence, it’s critical to avoid corrosion in your Sea water pumps. Corrosion Costs Corrosion if unchecked, leads to expensive costs that eat the profits. Here are the three types of expenses incurred by plant owners due to corrosion.
  • Direct Loss – This is a result of damage of materials by corrosion. For instance, consider a piping system that has been corroded and must be replaced.
  • Maintenance Costs – These are indirect costs that occur as a result of corrosion prevention. For instance, if you paint your pumping system every few years with non-corrosive paint, then it comes under maintenance costs.
  • Indirect Losses – These are other costs that occur a result of corrosion. For instance, you shut down production for a few days due to damaged pumping systems, and this leads to loss of revenue. The loss of income comes under indirect losses.
The first-step in controlling corrosion costs is to understand what is corrosion and the reasons behind it. Causes for Failure of Sea-Water Pumps Before, we take a look at the steps to prevent corrosion let’s take a closer look at the reasons why sea water pumps fail.
  • Corrosion – It’s the deterioration of the pump material that occurs when it’s exposed to the components of water. Sea water is high in mineral and salt content, which leach the pumps materials over time causing chemical reactions. These reactions eat away the pumps resulting in wear and tear.
  • Rust Formation – This occurs when oxygen corrodes iron or steel, leading to the formation of iron oxide, which is known as rust.
  • Erosion – This occurs when abrasive materials (like salts, minerals) impinge on the pump’s surface. Unlike corrosion, which can occur within a short span, erosion takes a longer time.
  • Abrasion – This occurs when a rotating foreign particle (like sands, small stones, minerals present in sea-water) rub on a stationary surface (the components of a pump).
Steps to Avoid Corrosion in Sea-Water Pumps #1: Choose the Right Pump The easiest and often best way to avoid corrosion is to prevent it from occurring in the first place. You can overcome the harmful effects of corrosion by choosing the right pump that suits your environment. When selecting a pump, you have to consider:
  • The environment
  • The materials handled by the pump
  • Pump efficiency and output
Corrosion is a natural phenomenon, especially while handling harsh fluids like sea water. However, you can avoid it a great deal and slow down its effect by choosing high-quality pumps that can sustain extreme operational environments. For instance, centrifugal pumps made from stainless steel are perfect for sea water pumps. Do your research. Check out the different options available in the market and find the right pumping system that withstands the harmful effects of corrosion. Pro Tip: Not sure which pump will work best for you? Overwhelmed by the technical jargon while selecting pump systems? Worry not, get in touch with our Pump Experts, who guide you to finding the right sea water pumps that not only meets your requirements but also operates efficiently for years to come. #2: Give Attention to the External Parts Too The outer surfaces of the water pump that are exposed to the elements of nature also have to be protected from corrosion. While these parts may or may not come in direct contact with the pumped material, in this case, seawater, they are still exposed to harsh conditions. For instance, submerged pumps not only pump sea-water but are also placed directly inside salt-water. Thus, there is a requirement to protect these external parts of the pump. Opt for materials that are rust-proof like stainless steel. Alternatively, you can coat the surfaces of these parts with corrosion resistant paints or other products. Lining the exterior with paints is an excellent way to keep off corrosion. The paint not only serves to repel water from the pump’s surface but also keeps off other contaminants as well. Long Live the Sea water Pumps Sea water pumps require a bit of extra care and maintenance when compared to freshwater systems. This is because sea water is highly corrosive and tends to wear away any system that it comes in contact with. However, you can ensure the life of your sea water pump by choosing the right pump materials and making use of paints and other coatings to prevent rust formation and corrosion. Need help choosing the right sea water pumps for your desalination plant? Get in touch with our Pump Experts by ringing up +91-120-4176000 or mail us on sales@sintechpumps.com. Sintech Pumps India is a leading pump supplier with clients across several countries. With Sintech, you’re assured of high-quality and the latest pump technology that improves the overall efficiency of your operations.
seawater pumps
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Factors to Consider while Choosing the Right Seawater Pumps for your Desalination Plant

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10 Ways to Increase the Energy Efficiency of your Water Pumps

Whatever be the nature of your job, if you need to move water, then you need to install water pumps. However, with a weight of approximately 30 kilograms for every cubic foot, it’s not easy to move water and requires lots of energy. The Department of Energy states that pumping systems account for 16% of the electricity bill in a commercial establishment. Also, the Bijli Bachao Foundation specifies that drinking water pumps account for 50% of the Energy bills in a household. If you want to reduce your electricity bills, then it’s essential to focus your attention on water pumps. Here are ten ways in which you can make the water pumps in your premises energy efficient.
  1. Select the right pump based on the usage
A recent Finnish study found out that pump efficiency on an average is 40% less and more than 10% of pumps operate at 10% efficiency or less. One of the major drawbacks during the design is over-sizing. This means that flow and pressure are often 25% more, than what’s actually required for the system. Ensure that your design engineer works along with the pump manufacturer to help you select the right pump while ensuring that all factors like size, power, speed, drive, and secondary equipment are ideally matched to the requirement type.
  1. Choose the right pump size
Finding the right size ensures that your pump is highly energy efficient. This is crucial since centrifugal pumps consume more than 50% of the average electricity bill and also incur high maintenance costs. Engineers often make the mistake of adding too much safety factors, making the pump oversized thereby leading to higher energy bills and maintenance costs.
  1. Cut down the impeller to the correct size
The Rule of thumb here is that the impeller should not be less than the minimum diameter specified on the pump curve. When you trim the impeller to the right size it ensures that you eliminate throttling losses of the control valves.
  1. Reduce the drop in pressure
An excellent way to prevent pressure from dropping in the system is to make use of the right pipe size. Hydraulic friction causes a loss in reduction of pressure, when water moves from one end of the pipe to another. This force is influenced by the following factors: pipe diameter, overall length of the pipe, the material, and roughness. Also, the physical properties of the transferred liquid play a crucial role in altering the friction. So, it’s essential that you choose the right pipe size to minimize pressure drop.
  1. Implement the right control valves
Control valves are used in pumps to control both flow and pressure. They are used to reduce loss of energy in non-controlled systems like irrigation systems. The main objectives of control valves are:
  • Throttling the flow
  • Bypassing the flow
While the flow of water is reduced by throttling, it causes an increase in pressure. You can reduce excess pressure by diverting the excess water flow, to a storage reservoir or any other location.
  1. Make use of variable speed drives (VSDs)
You can improve the energy efficiency by implementing a variable speed drive. The VSD adjusts the rotational speed of the pump to achieve the required flow and head. You can add a VSD to any existing pump system to reduce its speed to meet the requirements. Once you install it, the VSD can vary its speed to suit the needs of the system. This is great if you have plans to expand the system in future. This is one of the best methods to increase energy efficiency while lowering the costs.
  1. Ensure effective maintenance of your pumping system
Regular maintenance checks are essential to find out deteriorations in capacity and efficiency, long before they cause a major problem. For instance, rotor erosion and a worn ring can reduce the efficiency by ten percent or even more. Periodic maintenance is classified into two. They are:
  • Preventive – This includes checking the routing system needs like periodic adjustments, lubrication, and removing contaminants.
  • Predictive – This includes tests and assessments that aim to reveal deteriorating conditions.
 
  1. Always make use of higher efficiency pump seals
Leaks from sealing systems not only contaminate your premises but also cause losses due to increased mechanical friction. Leaks that occur between the discharges and pump suction reduce volumetric efficiency. The energy savings that occur as a result of using the right pump seals often exceed the savings got by installing variable drives, and trimming impellers.
  1. Opt for multiple pumps wherever needed
You can significantly improve the energy efficiency when several pumps are used in a parallel operating system. A multi-pump system is best when each pump runs individually and not together always.
  1. Reduce unnecessary usage
This is one method that is often overlooked. One of the easiest ways to save energy is to cut down on unnecessary use. You can improve energy efficiency by shutting down pumps when not in use and making use of pressure switches, to control the flow when the rates vary. The Bottom Line All pump systems vary in their size, type and operational requirements. Seek the help of an expert to assist you ensuring that your pump is energy efficient to improve your outputs and reduce energy consumption. We at Sintech pumps provides Energy Efficient Water Pumps in India to fulfill all your Industrial water pumps needs. We are available on www.sintech.in or you can call us on +91 120 4176000.