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IE5 motors with integrated VFDs deliver energy efficient commercial buildings

The revolution in commercial HVAC energy optimisation

Energy efficiency in commercial buildings is more critical than ever. Energy costs are rising, new environmental regulations are being implemented and HVAC energy efficiency requirements are increasing.

At Grundfos, we want to help our customers keep up. Here’s how we can support you with sustainable HVAC solutions – like our smart pumps that use the MGE/MLE range of ultra-premium IE5 energy efficient motors with integrated VFDs (variable frequency drives).

Smart pumps help elevate energy efficiency 

Smart pumps use real-time data on parameters like water flow and system pressure to measure system requirements. With an IE5-rated motor, you get the highest level of energy efficiency to reduce energy loss, while the integrated VFD makes it possible to adjust and control speed, flow and more automatically for optimal system performance. Together, this all-in-one solution delivers energy efficient heating, cooling and water supply and treatment in commercial buildings. 

By seamlessly integrating with building management systems, you also get the ability to constantly monitor the setup as well as full access to data that can be used to identify potential areas where energy can be saved, optimising overall performance and further improving efficiency.

Get ultra-premium energy efficiency with IE5 motors

Electric motors account for around 50% of the global electricity consumption1 – and as a result, they emit a significant amount of CO2. So, how can we reduce energy consumption in commercial buildings by looking at motors? To take on this challenge in commercial buildings, we have manufactured motors that are specifically designed to be used with our pumps – delivering hydraulic excellence.

Grundfos E-motors (MGE/MLE) not only maximise energy efficiency but also minimise operational costs in HVAC and water systems. Rated IE5 in the efficiency class of motors, the MGE is one of the most energy efficient motors on the market.

IE3 vs IE5: A side-by-side comparison

The IE5 rating represents the highest standard of energy efficiency in motors. That means the MGE IE5 motor can significantly reduce energy consumption compared to an industry-standard IE3 motor.

While IE3 motors meet basic energy efficiency standards, IE5 motors far exceed this, offering motor losses at least 30% lower2. This substantial increase in efficiency reduces the energy consumption by 10% with a typical pump load profile3 and can lead to significant cost savings over the motor's operational lifetime, making it the ideal choice if you’re looking to make your building more energy efficient.

Energy and cost savings with optimised efficiency

IE5 motors are very useful in commercial HVAC and water systems where their superior efficiency can deliver lower energy costs and reduced environmental impact. The motors are also particularly effective in applications that require a high degree of reliability and performance.

Additionally, the MGE/MLE IE5 motors are permanent magnet synchronous motors that are specifically designed for operation with frequency converters, making them ideal for pump applications that require high part-load efficiency. Grundfos IE5 motors have already been implemented in commercial buildings worldwide, and upgrading from IE3 to IE5 is a simple and smart long-term investment.

Enhancing energy efficiency in motors with integrated VFDs

VFDs play an important role when it comes to optimising electric motor performance because they adjust motor speed based on real-time demand. This significantly lowers energy usage when full power isn't necessary, enhancing efficiency and reducing operational costs. So, if you want energy efficient HVAC and water systems, you want a VFD.

How does a variable frequency drive work?

VFDs are essential components of modern pumping systems, particularly in applications that demand precise performance. In commercial HVAC units and water systems, the cooling and heating hydronic circuits in buildings, they offer precise control over motor speed and torque, which is crucial for maintaining optimal flow rates and pressure levels and ensuring quality HVAC solutions.

VFDs in HVAC and water systems are primarily used to improve energy efficiency, system reliability and durability, provide enhanced control over motor operations, and extend the equipment's lifespan by minimising mechanical and electrical stresses on the motor.

The synergy between VFDs and IE5 motors

Integrating VFDs with IE5 MGE motors is, in many ways, the peak of motor control. By enabling precise speed adjustments, VFDs ensure that motors operate only at the required capacity, minimising unnecessary energy usage and avoiding the stress of constant full-speed operation.

The VFDs and IE5 motors form a powerful combination that can adapt to fluctuating operational demands in commercial HVAC and water systems while maintaining maximum efficiency, setting a new standard in smart, energy-saving solutions.

Sources:
1. https://energy-efficient-products.ec.europa.eu/ecodesign-and-energy-label/product-list/electric-motors_en
2. https://www.grundfos.com/media/latest-news/grundfos-endorses-the-use-of-high-efficiency-ie5-motors-and-pump
3. https://www.grundfos.com/media/latest-news/grundfos-endorses-the-use-of-high-efficiency-ie5-motors-and-pump

Related products: Get a closer look at our smart pumps

Explore the full details, documentation and specifications of Grundfos smart pumps.

The future of energy efficient HVAC systems

As energy efficiency continues to gain importance, we want to lead the way with innovative solutions that can help commercial buildings meet – and exceed – performance and sustainability goals. Here’s a look at what the future holds.

Regulations and green building standards

With an evolving regulatory landscapes, the standards that govern energy efficiency in commercial buildings are expected to tighten, ushering in a new era of stringent requirements. We’re committed to continuously innovating pump technology and systems, focusing on sustainable HVAC solutions that benefit our customers and the planet. By enhancing the efficiency and longevity of our products, we make it possible to achieve and maintain high performance while navigating the challenges of an increasingly regulated world.

Integrating IoT in HVAC and water systems

It will become increasingly important to harness the power of IoT if we want to continue to push the boundaries within HVAC energy optimisation. By integrating digital capabilities into our solutions, we enable real-time data collection and analysis to anticipate system needs, fine-tune energy consumption and implement proactive maintenance. So we can ensure that HVAC and water systems operate at peak efficiency at all times.

Collaborations and advancements in technology and materials

We want to continue to ensure that our products remain at the forefront of sustainable HVAC solutions. We collaborate with customers and partners to drive innovation, integrating the latest advancements in technologies and materials. And we develop new, high-quality materials and innovative design techniques for motors that are more energy efficient and durable, improvements that are crucial if we want to ensure long-term sustainability in commercial facility management.

FAQs: Grundfos IE5 motors and VFDs

Discover frequently asked questions about IE5 motors and VFDs, including details on functionality, benefits, and technical specifications.

Question: What is the significance of the IE5 energy efficiency rating for motors?
The IE5 energy efficiency rating represents the highest standard for motor efficiency, defined as 'Ultra-Premium Efficiency'. It indicates that motors with this rating consume significantly less energy than lower-rated motors, reducing operational costs and environmental impact. The IE5 motor offers a 30% reduction in motor losses compared to an IE3 model, reducing the energy consumption by 10% with a typical pump load profile.

Question: How do variable frequency drives (VFDs) enhance the performance of pumps?
VFDs control the speed and torque of the electric motors based on the system's demands. This capability allows pumps to operate more efficiently by matching the output with the actual need, thus saving energy and reducing wear and tear.

Question: Can Grundfos IE5 motors be used in all types of commercial HVAC applications?
Yes, Grundfos IE5 motors are versatile and can be integrated into various HVAC and water applications. They offer improvements in energy efficiency and performance in diverse commercial settings, including large buildings, industrial facilities, and more. The E-motors are now available in a range of our pumps, including vertical multistage, immersible, inline and end-suction pumps (CRE, MTE, TPE and NBE/NKE).

Question: What are the cost benefits of upgrading to high-efficiency motors and VFDs?
Upgrading to high-efficiency motors and VFDs reduces energy consumption, decreasing energy costs. These high-efficiency systems often have lower maintenance costs and longer operational lifespans, contributing to overall cost savings.

Question: How do smart pumps differ from traditional pumps?
Smart pumps have integrated VFD, sensors and digital controls, allowing real-time data analysis and system adjustments. This technology makes them more efficient than traditional pumps because they can automatically adapt to changing system demands without manual intervention.

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