Grundfos high efficiency IE5 motors for improved energy efficiency

May 6, 2021 1:20 pm

E-motors are the ideal solution for better efficiency and reducing energy consumption.

One of the world’s leading manufacturers of pumps and pump equipment, Grundfos makes electrical motors of exceptional quality. Grundfos’ E-pumps with integrated frequency converter are designed with total control, customer convenience, and environmental sustainability in mind.

Commenting on the growing focus and adoption of E-Motors, Markus Brandstetter, Chief Technology Officer, Grundfos says “Digital transformation is inevitable across the various segments and we at Grundfos are proud to pioneer in creating the products and digital solutions of the future. Our focus on developing IE5 E-motors is strategic not only for our business, but we see that it is a critical solution to alleviate the world’s energy and climate issues. E-motors are known to not only improve the efficiency of the entire system but also help in reducing energy consumption and helping us mitigate climate change. This is what we push further to the benefit of our customers and end-users in reducing cost and CO2 emissions.”

High efficiency E-pumps with IE5 motors contribute substantially to energy savings and reduced CO2 footprint. Grundfos estimates that the yearly avoided CO2 emission can be significant. In 2020 alone the avoided CO2 emissions from Grundfos E-pumps was 270,000 tons.

Further, the in-built application control in MGE E-Motors reduces not only the energy consumption of the pump itself but also optimises the performance and efficiency of the entire system.

Why choose an E-Motor?

• E-motors offer increased functionality, making them easy to use in a wide-range of complex applications. These E-motors provide a range of benefits over standard motors such as:
• The MGE E-motor provides superior energy efficiency even beyond IE5 standard
• IE5 motor losses is at least 30 percent lower than the IE3, this alone reduces the energy consumption by 10 percent with a typical pump load profile
• The pump, motor and frequency converter are perfectly matched for optimised pump efficiency
• Choosing the right control mode in MGE for the application can provide even more energy savings for the entire system of up to 75 percent compared to uncontrolled pumps.

Looking beyond just motors to the entire system

Grundfos iSOLUTIONS brings a new era of intelligence to pump systems and water technology with solutions that look beyond individual components and optimise the entire system. Powered by the company’s deep understanding of water, Grundfos iSOLUTIONS utilises intelligent pumps, cloud connectivity and digital services. Together they enable real-time monitoring, remote control, fault prediction and system optimisation to help you reach a new level of performance.

Grundfos iSOLUTIONS delivers the optimal combination of pumps, drives and auxiliary components for the specific application, incorporating special features and functions and building on application knowledge and experience. iSOLUTIONS allows easy integration of pumps, drives, measurement, controls, protections, and communication, saving you valuable engineering, installation and commissioning time.

Grundfos recommended changing to close-coupled, end-suction pumps with variable frequency drives – intelligent NB-E pumps. These could provide the exact flow requirements to the chillers without wastage and improve the Delta-T to five degrees Celsius. A simple, turnkey solution. H&H saw results almost immediately. At Indigo Tower, the pumps previously used 36 kW every hour. After the upgrade, they used between 7-10 kW/h. Now two years in operation, they use 81 percent less electricity than previously. In addition, pump efficiency is not only better, but also the efficiency of the whole HVAC system. Actual payback time on the investment is just eight months. The numbers on the other two building retrofits in 2018 tell similar stories. Falcon Tower cut its pumps’ electricity consumption by 46 percent and Green Tower cut its use by 57 percent. Overall, the buildings cut their total energy savings – including that from chillers, ventilation and lights – between 20-25 percent.

For more info, visit: https://www.grundfos.com/in