The advantages of using VFDs in industrial applications are highlighted by a number of real-world case studies of successful Variable Frequency Drive (VFD) installations across a range of industries. Here are a few illustrations:
1. Water Treatment Plant:
VFDs were placed on pumps and blowers at a Florida water treatment facility, which led to a 15-20% decrease in energy usage and significant monthly energy bill savings.
The Florida water treatment facility that put VFDs on its pumps and blowers reaped big rewards from doing so. Due to the constant speed running of their pumps and blowers, the plant had been facing excessive energy consumption and prices. The factory was able to reduce energy use by 15-20% by installing VFDs, which allowed it to regulate the speed of the pumps and blowers based on the demand for water.
The VFDs also made it possible for the pumps and blowers to run more smoothly, extending the equipment’s lifespan and minimizing wear and tear. This decreased both the plant’s need for maintenance downtime and maintenance-related costs.
2. HVAC System:
When a hotel in Las Vegas updated its HVAC system using VFDs, the energy consumption dropped by 35% and the annual cost was cut by over $100,000.
The Las Vegas hotel that installed VFDs in its HVAC system as a retrofit enjoyed considerable advantages. The hotel’s HVAC system was always running at full capacity before the installation, regardless of the actual demand for heating or cooling. High energy costs and usage were the outcome.
The hotel was able to reduce energy use by 35% after installing VFDs on the HVAC system, controlling the speed of the fans and pumps based on the demand for heating or cooling. The VFDs also made it possible for the fans and pumps to run more smoothly, which decreased noise and vibration levels in the hotel and enhanced visitor comfort.
The hotel experienced significant cost reductions as a result of installing VFDs on the HVAC system in addition to the energy savings. The payback period for the installation of the VFD was less than two years, and the yearly cost savings from the decreased energy consumption were over $100,000.
3. Food Processing Plant:
The energy usage of a food processing facility in California was reduced by 20–30% after installing VFDs on their refrigeration system, with a payback time of less than two years.
The California food processing facility that installed VFDs on their refrigeration system also reaped big rewards from doing so. The refrigeration system was running at a constant pace before to installation, which led to significant energy usage and expenditures.
The factory was able to manage the speed of the compressor based on the demand for cooling after putting VFDs on the refrigeration system, leading to a 20–30% reduction in energy consumption. The VFDs also made it possible for the compressor to run more smoothly, extending the equipment’s lifespan and minimising wear and tear. As a result, the plant’s maintenance and repair expenses went down.
The VFD installation had a payback period of less than two years, proving the cost-effectiveness of the solution. While still providing cooling as needed, the business was able to save expenses and energy usage.
4. Mining Equipment:
The energy consumption of a copper mine in Chile was reduced by 20–30% after the installation of VFDs on the conveyor belts and grinding mills, with a payback period of less than two years.
The company was able to manage the speed of the equipment based on the demand for materials after putting VFDs on the conveyor belts and pumps, leading to a 20–30% reduction in energy use. The VFDs also made it possible for the machinery to run more smoothly, extending the equipment’s lifespan and minimising wear and tear. As a result, the corporation spent less on maintenance and repairs.
Additionally, the VFDs improved control over the pumps and conveyor belts, enabling more precise material movement and minimising downtime from equipment malfunctions. Because the equipment could start and stop more smoothly after the installation of VFDs, the safety of the mining operations was also increased.
The VFD installation had a payback period of less than two years, proving the cost-effectiveness of the solution. In addition to increasing the effectiveness and safety of its operations, the mining firm was able to lower expenses and energy consumption.
5. Paper Mill:
The installation of VFDs on the fan and pump systems of a paper mill in Georgia led to a 20% decrease in energy consumption and a payback period of less than two years.
Significant advantages resulted from the installation of VFDs on a paper mill’s fan systems in the United States. The fan systems were running at a constant speed prior to the installation, which led to significant energy usage and expenditures.
The paper mill was able to manage the speed of the fans based on the demand for air flow after installing VFDs on the fan systems, leading to a 30–40% reduction in energy use. The VFDs also made it possible for the fans to run more smoothly, which reduced noise and vibration levels in the mill and enhanced worker comfort. Each of these cases shows how the usage of VFDs significantly reduced costs and saved on energy while also enhancing system performance. The extended equipment lifespan brought about by less wear and tear and better system control were further advantages of the VFD installations. These case studies show how VFDs have the ability to offer affordable and effective solutions for a variety of industrial applications.
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