• Pumps English

Payback Time: 0 - 3 years

Energy Saving Potential: 0 - 75 percent

• "In many cases, the flow rate is mechanically controlled: Throttling, By-pass. Such a situation leads to situations of inefficiency, caused by: too high pressure level, unnecessary flow and low efficiency of the pumps. "

In many cases, the flow rate is mechanically controlled: Throttling, By-pass. Such a situation leads to situations of inefficiency, caused by: too high pressure level, unnecessary flow and low efficiency of the pumps.

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• Pumps English

Payback Time: 3 - 6 years

Energy Saving Potential: 2 - 25 percent

• "In many industrial sites, pumps are driven by old electric motors. The analysis of Topmotors, with more than 4,000 motors, revealed that 56% of these are already running almost twice as long as their life expectancy. This suggest there is barely any continuous improvement process for replacing old, mostly oversized and inefficient motors systems. In total, less than 20% of all motors are equipped with Variable Speed Drive (VSD). The majority of the motors that are equipped with a VSD is younger than 15 years. VFD would probably suitable for up to 50% of all drives with huge efficiency potentials. The effect of a lower frequency is extremely important in small motors. The performance of asynchronous machines drop down since 50% of nominal speed is reached. Synchronous motors (PM in particular) are much more efficient in this respect. Although this effect is somewhat less pronounced with large motors, variable speed with low speed working ranges is a valid reason to change existing motors for synchronous technology. oday, IE4 or IE5 motors can improve efficiency by 5% or more compared to older motors. In frequent low speed working situations, a synchronous motor will offer higher efficiency."

In many industrial sites, pumps are driven by old electric motors. The analysis of Topmotors, with more than 4,000 motors, revealed that 56% of these are already running almost twice as long as their life expectancy. This suggest there is barely any continuous improvement process for replacing old, mostly oversized and inefficient motors systems. In total, less than 20% of all motors are equipped with Variable Speed Drive (VSD). The majority of the motors that are equipped with a VSD is younger than 15 years. VFD would probably suitable for up to 50% of all drives with huge efficiency potentials. The effect of a lower frequency is extremely important in small motors. The performance of asynchronous machines drop down since 50% of nominal speed is reached. Synchronous motors (PM in particular) are much more efficient in this respect. Although this effect is somewhat less pronounced with large motors, variable speed with low speed working ranges is a valid reason to change existing motors for synchronous technology. oday, IE4 or IE5 motors can improve efficiency by 5% or more compared to older motors. In frequent low speed working situations, a synchronous motor will offer higher efficiency.

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• Pumps English

Payback Time: 0 - 3 years

Energy Saving Potential: 0 - percent

• "In some electric drives, there is a coupling, transmission or gear between motor and driven component. In the case of pumps, direct coupling is usually the rule. When there is a transmission, when there is a coupling, losses and maintenance costs can be significant. The figure below shows the difference between V-belt and flat-belt for different load cases and different size. "

In some electric drives, there is a coupling, transmission or gear between motor and driven component. In the case of pumps, direct coupling is usually the rule. When there is a transmission, when there is a coupling, losses and maintenance costs can be significant. The figure below shows the difference between V-belt and flat-belt for different load cases and different size.

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• Pumps English

Payback Time: 0 - 3 years

Energy Saving Potential: 0 - 30 percent

• "In many pumping systems, the pumps are not working in an optimal operating point which leads to a low efficiency. The reasons for that are: • very approximate estimate of network pressure drop • addition of safety margins (oversizing effect) • evolution of the user need or network over time The problem is that the efficiency of pumps is very sensitive to the operating point. Unlike motors, efficiency drops very quickly when moving away from the nominal point. Operating at mid flow can reduce the pump efficiency of 20 or 30%."

In many pumping systems, the pumps are not working in an optimal operating point which leads to a low efficiency. The reasons for that are: • very approximate estimate of network pressure drop • addition of safety margins (oversizing effect) • evolution of the user need or network over time The problem is that the efficiency of pumps is very sensitive to the operating point. Unlike motors, efficiency drops very quickly when moving away from the nominal point. Operating at mid flow can reduce the pump efficiency of 20 or 30%.

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• Steam English

Payback Time: 0 - 0 years

Energy Saving Potential: 10 - 20 percent

• Heat is essential for many industrial processes, and steam is often a preferred heat transfer media. Steam can be deliver heat at many different temperature levels that are physically coupled with a pressure level (an important design parameter).

Heat is essential for many industrial processes, and steam is often a preferred heat transfer media. Steam can be deliver heat at many different temperature levels that are physically coupled with a pressure level (an important design parameter).

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