VFDs are typically preferred by those who expect to save energy. Yet, they also offer other benefits that improve performance and reliability.
For example, a VFD can reduce power demands during pump start up. Water hammer could be stopped from harming pumps and pipes. The ability to adjust the speed of your pump also assists in optimizing system performance.
Energy Efficiency
The VFD is a technology that has been proved to be energy efficient. Through adjusting the speed of the pump depending on the needs of the process, they help reduce wasted energy. Also, they reduce costs of energy because they do not run pumps in full operation.
The water pumps that have VFDs can be adjusted to provide a consistent level of pressure without requiring the pressure-reducing devices. This can help eliminate pollution and increases the longevity of components in the water system.
Profiles of load time that conform to the standards for certain application are needed to allow the calculation across the entire market of an energy efficiency index. These types of profiles are intended be able to reflect typical situations well enough to permit comparisons between various pump types without taking into account specific technical or physical aspects. These profiles can be difficult and expensive to design. To reduce the effort involved the process, semi-analytical models for the pump and interpolation procedures for losses of the power control system are applied.
VFD Water System Benefits
A VFD regulates how the pump adapts to fluctuating demand. In contrast to systems with constant speeds, it can control the system response by modifying the pump and system curves. This reduces energy consumption and wear. Also, it improves system’s control of the process.
These may include features such as deragging that rotates the motor in reverse to remove solids or stringy materials. They may also have ramp-up or ramp-down features that can reduce the amount of inrush current as well as the load on motors as well as pumps.
A VFD has the ability to alter the pump’s operation at a moment’s notice, with no any interruption to use. It happens because the pump efficiency changes when the speed increases. This helps to reduce energy consumption when operating at a fluctuating loads. It also eliminates water hammer in the system. This can damage an aging piping infrastructure and lead to premature malfunction.
Water Pump System Retrofitting
In pump systems VFDs are able to make a real difference in energy savings. Particularly, this is true of system for sludge or slurry. They can be rough and are high-viscosity. Pumps that are working to push this heavy and dense mix is going to require more force than one that’s just pumping water.
VFDs have the ability to handle this through controlling the power delivered through the motor. This makes it possible to lower energy usage but without putting at risk the system.
VFDs can also provide a constant pressure control that draws the AC power you get from your utility and then re-inverts it back to an appropriate frequency to run the pump you are using it for. This avoids inadequate power quality and enables your expensive pumps operate with the maximum efficiency they were designed for. This also helps reduce mechanical stress.
Water Pump Performance Optimization
The power consumed by pumps is significant portion of the overall electricity use in many industrial and water treatment facilities. Energy optimization of pumps lowers costs and also provides substantial ecological benefits.
The replacement of pumps by newer equipment with higher capacity will provide quick increases in capacity. The process usually involves the need for downtime along with a substantial capital investment.
The may bom cong nghiep can offer a retrofit solution that provides similar capacity increase and efficiency, however with lower capital and annual energy costs. It is possible to do it by simply altering the dimensions of the cartridge of the pump, and conserving all the existing pipework and important interfaces for the site. This enables a new, more efficient multiple pump operation that destages and stages pumps only when required. The time required for each pump is cut down which results in greater efficiency in energy use.
Reduce the Water Hammer
VFDs aren’t just more efficient, but they can also help reduce the hammering of water. They could cause damage to pipes and valves. The impact is caused through a sudden closure of an inlet valve. The capability of a VFD to accelerate and reduce speed could prolong duration of time to get a check valve close, reducing the intensity and frequency of pressure variations.
VFDs are also able to make valves open for operation during time of low demand, eliminating the need to have a flow orifice that is small along with the energy usage. This is especially beneficial to hotel and apartment complexes with multiple floors that experience varying use patterns.
Though it’s perfect, a load time profile that accurately reflects the application of a pump unit is expensive to find. A standard load-time profile can be used to measure an energy efficiency index in these circumstances.