VFDs are frequently picked by consumers because they expect to save energy. VFDs also provide many benefits, including improved system effectiveness and dependability.
For example, a VFD can reduce power demands during pump start up. It can also help reduce the damage caused by water hammer to the pumps and pipes. Being able to alter the speed of the pump helps you optimize system performance.
Energy Efficiency
VFDs are a method of operation that has been demonstrated to be energy efficient. Through adjusting the speed of the pump depending on the needs of the process and reducing wasted energy. They can also cut down on energy expenses by reducing the need for pumps to be running at full speed.
Water pumps with VFDs can alter their speed in order to keep a constant pressure. This removes the need for pressure reducing valves. It helps reduce waste as well as prolongs the lives of water system components.
For a broad-based estimation of the energy efficiency index, standard load-time profile types must be created for specific uses. Those profile types are supposed to be representative of typical uses enough that it is possible to compare various pump types without taking into account technical and physical specifics. However, such profiles are difficult to create and expensive to establish. In order to reduce the amount of effort required in creating semi-analytical models of the pump and interpolation procedures for power loss motor must be used.
VFD Water System Benefits
The may bom cong nghiep is able to regulate the reaction to changing demands. In contrast to constant speed systems they can regulate the system’s response by modifying the curves of the pump system as well as the system. It saves energy as well as reducing wear. This also enhances processes control.
There are also features such as deragging, which turns the motor backwards to remove solids or stringy substances. It is possible that they also have adjustable ramp-up and down functions, which reduce inrush current, reducing the load of stopping and beginning on the motor/pump.
Because pump performance changes with the speed of operation, a VFD is able to adjust the performance of the pump on the fly according to system requirements with no interruption to use. It reduces energy use during times of fluctuating operational load. It also eliminates water hammer from the system that could cause damage to an old piping system and cause premature failure.
Water Pump System Retrofitting
VFDs used in pumping systems can provide a wonderful option to conserve energy. This is true especially for the sludge and slurry pumps. They can be rough and have high viscosity. A pump laboring to push the heavy, dense mixture is more powerful as compared to a pump that is simply pumping water.
VFDs can handle this, by controlling how much power is delivered into the motor. It is possible to lower energy usage without the danger of harming your device.
VFDs provide a continuous pressure control that draws the electricity from your service and converts it into the appropriate frequency for the pump you are using it for. It reduces the power quality of poor pumps and allows expensive pumps to be run with maximum performance. This also minimizes mechanical stress.
Optimization of the Performance of Water Pumps
The electricity consumption for pumps makes up a large portion of all electricity used in many water and wastewater facilities. Pump energy optimization reduces these costs, and can provide significant ecological benefits.
The replacement of pumps by newer equipment specifically designed to increase production could provide immediate increase in capacity. The process usually involves the need for downtime as well as a large capital expenditure.
VFDs could provide an option for retrofitting that offers the same increase in capacity, but with lower cost of capital and energy consumption. This is possible by re-sizing the original pump cartridge, while maintaining existing pipework and site important interfaces, lube system and mechanical seal ancillaries. This allows a brand new, more efficient multi-pump operation which stages pumps and then destages them only in the event of need. This drastically reduces the running time for each pump, that improves energy efficiency as well as efficiency.
Reduce water hammer
VFDs aren’t just more efficient, but they be a great help in reducing water hammering. These can cause harm to piping or valves. The impact is caused through a sudden closure of an inlet valve. A VFD’s ability to gradually raise and lower speeds may prolong the closing period of a valve and reduce the intensity and frequency of the pressure fluctuations.
The VFD may open control valves during low-demand periods thus removing the need to use a minimum number of flow orifices, and their energy consumption. They are particularly useful for high-rise buildings like apartments and hotels that have a variety of usage styles.
It is expensive to create loads-time profiles that accurately depicts the usage of a specific pump. The standard load-time profile is typically used to determine an energy efficiency index in these scenarios.
