VFDs are often selected by individuals because they expect to save energy. However, they offer many advantages that could improve system reliability and efficiency.
For example, a VFD can reduce power demands during pump start up. Water hammer will be kept from harming pumps and pipes. It is also possible to improve the efficiency of your system by tweaking the speed of your pump.
Energy Efficiency
VFDs have been proven to be energy efficient technology. Through adjusting the speed of the pump in accordance with the process’s requirements they can help cut down on wasted energy. In addition, they cut costs of energy by not running pumps at full capacity.
Water pumps with VFDs can be adjusted in order to provide a consistent level of pressure, without using pressure reducing devices. They reduce waste, and prolongs the life of parts in water systems.
For a broad-based determination of an energy efficiency index, standard load-time profiles must be created for specific uses. The profiles should be able to represent typical applications well enough to permit comparisons between different pumps, without taking into consideration the technical or physical aspects. These types of profiles can be complex to construct and are expensive to establish. Semi-analytical models for pumps as well as interpolation strategies to reduce the loss of power to drive are utilized for reducing effort.
VFD Water System Benefits
The VFD will control the response of a pump according to the demand. It can change the flow curve of the pump or system for system control in contrast to constant-speed systems. This in turn saves energy, lowers wear and increases efficiency and control of processes.
The bom cong nghiep may also offer features such as deragging that turns the motor in reverse to break up solids and other material. It is possible that they also have variable ramp up and down functions that reduce inrush current, reducing the stress of stopping and starting for the motor/pump.
A VFD can adjust pump operation on-the-fly, without any interruption to use. It happens because the pump efficiency changes when the speed rises. This prevents the wasteful use of energy during periods of fluctuating operational load. Additionally, it prevents water hammer from the system. This can endanger an old pipe infrastructure as well as cause premature failure.
Water Pump System Retrofitting
In pump systems VFDs can provide significant improvements in energy efficiency. This is particularly true of the sludge and slurry pumps. They may also be viscous and rough. Pumps pushing a heavy, thick mixture will require greater energy.
VFDs can manage this by regulating the power delivered to your motor. You can save energy without damaging the system.
VFDs provide a continuous pressure controller which takes electricity from your service and converts it into the right frequency to the pump you are using it for. It removes bad power quality as well as allows costly pumps to operate at their highest efficiency. Also, it reduces the mechanical strain.
Enhancing the efficiency of water pumps
Pump power consumption is significant portion of the overall energy consumption across many industries as well as water treatment facilities. Optimization of energy consumption in pumps can reduce these costs, and can provide significant environmental benefits.
The best way to improve capacity is changing pumps to equipment that can produce higher rates. However, this generally requires downtime and an investment in capital.
VFDs can offer a retrofit solution that provides the same amount of capacity, but with lower expenses for capital and annual energy. This can be achieved by resizing the original pump cartridge and conserving existing pipework, critical interfaces, lube systems and mechanical seal ancillary systems. It allows for a much more effective, modern multi-pump technology that schedules pumps, and then removes them according to the need. This dramatically reduces the running time for each pump, which increases energy efficiency and reliability.
Lowering the impact of water
VFDs are not only more efficient, but they also help reduce water hammering. These shock waves from hydraulics can result in damage to pipes and valves. They typically occur when a closed check valve suddenly closes. The ability of a VFD to slowly ramp up and down speeds could prolong the time to close for a valve, decreasing the intensity and frequency of these shock waves.
The VFD can open the valves to control the flow during times of low demand and eliminate the need for a minimal flow of orifices as well as the associated energy usage. This can be particularly advantageous for multistory apartment buildings and hotels with varying usage patterns.
While it is ideal, a load-time profile that accurately reflects the usage of a particular pump is expensive to identify. A standard load-time profile can be employed to establish the an energy efficiency score in these circumstances.
