What is total head 10 what is the relationship between head and total head 11. This difference occurs due to the increase of the total length of the motor. Pumps and pumping system bureau of energy efficiency 118 figure 6. Pump motor adapters bell housings are designed to assure proper shaft alignment between the electric motor and your hydraulic pump. The motors used in flygt pumps are highly efficient. You may question why i say pressure drop rather than just pressure. How to select a centrifugal pump examples of total head calculations sizing a pump for a home owner application 14.
Oct 08, 2017 a pump converts rotational force on its shaft into pressurized oil to supply hydraulic components. The rotor and stator are each connected from a different power supply, this gives another degree of freedom for controlling the motor over the shunt. The rotor and stator windings are connected in parallel. The selection tables given in this manual have been developed for. If the motors effective area is 2 square inches 12. Determining electric motor load and efficiency department of energy. Static head is simply the difference in height of the supply and destination reservoirs, as in.
This is shown in figure 1 for the two alternative suction arrangements. Improving pumping system performance department of energy. An electric motor is an electric machine that converts electrical energy into mechanical energy. Over the past twenty years, the application of hydraulics in agricultural, construction and materials handling vehicles has. Comply with the indications of the drawings below as far as the. Centrifugal pump definition centrifugal pump can be defined as a mechanical device used to transfer liquid of various types. Pump is a mechanical device that converts mechanical torque into hydraulic energy. The impeller is typically connected to an electric motor which provides the energy to be. For iec frames, the letter l means being in accordance with ie3 efficiency levels. The pump body and the outer sleeve are secured between the base and the pump head by means of staybolts.
Mar 30, 2018 difference between pump and motor the main difference between motor and pump is that a motor is a device that converts electricity to mechanical energy which results in motion, whereas a pump is a. A hydraulic motor converts pressurized oil to one of its ports into rotational force on its shaft. The second pump is can be a specially designed pump for high pressures. They also reduce assembly cost over using a foot mounting bracket or riser.
In fact, virtually all modern vehicles use fluid power, and new vehicles and markets are appearing as. Cre, crie and crne pumps are fitted with an emotor, i. Motor and pump difference between pump and motor motor. Pump is the driven member which converts the mechanical energy produce by the motor into the pressure energy. It converts the energy provided by a prime mover, such as an electric motor, steam turbine, or. The difference between the vapor pressure of a fluid and the. Pdf assessment of pumps performance in water supply systems. Fluid power and useful work done by the pump divided by the power input in the pump shaft. Drive coupling access hole with safety orange removable cover electric motor mounting bolts provided. The fluid displacement pump is also known by several names.
Pressure drop is the second factor of hydraulic motor torque. Much of this confusion goes away if the different types of compressors are properly identified. Energy performance assessment of water pumps bureau of energy efficiency 100 7. Pump headflow curves are typically given for clear water. Department of energy doe office of energy efficiency and renewable energy eere with support from the copper. Difference between pump and motor compare the difference. A pump converts rotational force on its shaft into pressurized oil to supply hydraulic components. The impeller is the device that rotates in the liquid and is usually contained inside a volute, or casing. The enduser license prohibits installation of these files on a network server or their shared use in a network environment. Another significant difference between electric vehicles and gasolinepowered vehicles is the number of moving parts.
Premium efficiency motor selection and application guide i acknowledgments the premium efficiency motor selection and application guide and its companion publication, continuous energy improvement in motordriven systems, have been developed by the u. Review different pump types commonly used understand the difference between centrifugal pumps and positive displacement pumps understand the working principle of the tuthill. For example, a motor running with a 50% load has a slip halfway. The sv pump is a nonself priming vertical multistage pump coupled to a standard motor. It addresses the differences in motor efficiency ratings, the considerations and benefits of different control methods, and the issues that. Electric motors are divided into two categories based on the form of. As a result of movement of water, a partial vacuum is created which is later. Uses soft magnet rotor that is magnetized by the application of current in the stator coils 3. Motor is the driving member which converts the the electrical energy into the mechanical energy. Vfds may be referred to by a variety of other names, such as variable speed drives, adjustable speed. Whats the difference between asynchronous and synchronous. The concept of the fluid being available to the pump is discussed in detail in chapter 2 of this book. Dec 29, 2012 in addition, da comprssor can be used along with a storage which means da output of da compressor can be stored and then used anytime unlike da pump. Department of energys office of energy efficiency and renewable energy.
The cre pump motor is a grundfos mge motor designed to en standards. Centrifugal pumps the centrifugal pump produces a head and a flow by increasing the velocity of the liquid through the machine with the help of a rotating vane impeller. Impellers are generally made of bronze, polycarbonate, cast iron. Text headings in each module are linked to and f\ rom the table of contents for that module.
Motor efficiency, selection, and management a guidebook for industrial efficiency programs in the fiercely competitive global marketplace, minimizing operational costs can mean the difference between success and failure for many companies. The cr, crn high pressure pump is a nonselfpriming, vertical multistage centrifugal pump fitted with a grundfos specified motor and a specially developed highpressure shaft seal. As the name suggests, it relies on the principal of centrifugal force. All water pumps are composed of two basic selections.
Pdf on jan 20, 2012, liselott ericson and others published on fluid power pump. This data booklet covers technical information about the high pressure pump. In normal motoring mode, most electric motors operate through the interaction between an electric motors magnetic field and winding currents to generate force within the motor. Fewer moving parts in the electric vehicle leads to another important difference. The magnet is spun by a 3 phase ac motor with no rotor voltage 4. The crnsf pump is a nonselfpriming, vertical multistage centrifugal pump fitted with a grundfos specified tefc motor. Jun 18, 2015 heres the difference between a pool pump and motor. Premium efficiency motor selection and application guide disclaimer this publication was prepared by the washington state university energy program for the u. Sep 30, 2012 in this article, we are going to discuss what motor and pump are, the operational principles behind motor and pump, the types and variations of motors and pumps, and finally the difference between motor and pump. Bb2 or bb5, the flowserve wch pump is a between bearings, radially split, one, two or threestage pump, specifically designed for high suction pressure applications. This topic may be on the little shallow end in terms of depth of discussion.
The pump cannot suck on or draw the liquid into the pump. The fluid must be available to the pump with sufficient energy so that the pump can work with the fluids energy. The frequency converter enables continuously variable control of the motor speed, which makes it possible to. The electric vehicle has one moving part, the motor, whereas the gasolinepowered.
The distinction between natural law in the politicallegal sense and law of. The electric vehicle has one moving part, the motor, whereas the gasolinepowered vehicle has hundreds of moving parts. Pumps generally have a large suction port and a smaller pressure port. It is recommended that you download this pdf document and assignment to. The actual speed of the motor is less than its synchronous speed with the difference between the synchronous and actual speed referred to as slip. The difference between the vapor pressure of a fluid and. Difference between pump and motor difference between. Whats the difference between asynchronous and synchronous motors. Jul 23, 2018 cmon over to where you can learn plc programming faster and easier than you ever thought possible.
Bernouliis equation between start of pipe, pump unknown v in pump represented by net positive suction head npsh on manufacturers pump curves to prevent. In a belt drive system, a ratio is used to determine the speed relation between two vbelt pulleys. Electric motor, which is more commonly known as the motor, is a device that is capable of converting electrical energy into mechanical energy. It simply facilitates movement of fluids from one place to another using suction or pressure or both. New energyefficient motor technologies use a synchronous design, putting differences between asynchronous and. In fact, virtually all modern vehicles use fluid power, and. It is in this form that the centriflo centrifugal pump is used most often as a component of our products.
Some energy is always lost as sound, vibrations, and heat. Difference between pump and motor basics of pump and motor. Jan 27, 2015 pressure drop is the second factor of hydraulic motor torque. This product guide covers technical information about the high pressure pump. It can mean a motor and a pump together as a pump pac kage or refer to the fluid displacement pump. W22 electric motor 02 dimension applicable to 2pole motors dimension applicable to top mounted terminal box for 185 kw and larger note. A vfd therefore provides continuous range process speed control as compared to the discrete speed control that gearboxes or multispeed motors provide. Motor and pump difference between pump and motor motor vs. Because this consideration is common to almost all pumps but not jet pumps, a simple example is given in fig.
Khalil encyclopedia of life support systems eolss 1. Through this process, the boiler tank is kept heated. Identify the difference between pump designs and characteristics to choose the best one for a specific application. Additionally, the hydrohot includes a motoraide feature, which uses the circulation of the motor homes engine to transport the engines coolant from the hydrohots boiler tank to the motor homes warm engine and back to the boiler tank. A motor is the mechanical or electrical device that generates the rotational or linear force used to power a machine. And the pump is use to lift the liquid from the low pressure liquid system to the high pressure. Cmon over to where you can learn plc programming faster and easier than you ever thought possible. White paper 257, difference between variable speed and variable capacity compressors and why its important shows an example with quantitative analysis. Pumps are generally powered by electric motors that drive an impeller. The operating principle may be different but the basic law that governs them is same in all types of motors. To compare the operating costs of an existing standard motor with an appropriatelysized. Pumping systems design nyangasi 031412 page 3 of 15 a total static head the total static head hts in the pumping system is the water level difference between the suction and delivery reservoirs. This topic may be on the little shallow end in terms of depth of discussion but for new pool owners, this subject can be confusing. Pump ratio formulation pump has two meanings at graco.
This portable document format \ pdf \ file contains bookmarks, thumbnails, and hyperlinks to help you navigate through the document. Hydraulic pumpmotor division pressure compensator pressure compensated pump will provide full pump flow at pressures below the compensator setting. The performance or characteristic curve of the pump. In addition, the style pf flangemounted pumps can be simply bolted on any vertical flat surface, such as coolant reservoir, eliminating suction piping completely. This may occur in irrigation or water supply projects. Difference between pump and motor the main difference between motor and pump is that a motor is a device that converts electricity to mechanical energy which results in motion, whereas a pump is a. The liquid end, located between the upper cover and the pump casing, is. Example of the difference between the nominal working point and the actual working. Know and understand centrifugal pumps \ r i \ suction piping. Describe the differences between air pump ratios and hydraulic pump ratios.
Mechanical engineering types and performance of pumps and compressors essam e. Recent reports estimate that motordriven systems are the largest electrical end use in the industrial. Heres the difference between a pool pump and motor. The fittings headloss is calculated by what is known as the kvalue method. It simply facilitates movement of fluids from one place to another using suction or pressure. The modules listed in the overview are linked to the corresponding pages. The amount of slip present is proportional to the load imposed upon the motor by the driven equipment see figure 4. Pumps are ce compliant and engineered to provide safe, reliable operation in the elevated temperature and pressure required for the refining and power applications. Figure 1 shows the comparison between the motor pistons effective area and the pump pistons. The speed ratio would be stable if slippage did not occur. The difference between the cr and cre pump ranges is the motor. The total static head therefore depends on the site conditions between the suction and delivery.
On average, a centrifugal pump should last at least. The three main types of pumps are known as direct lift pumps, displacement pumps and gravity pumps. In principle, any liquid can be handled by any of the pump designs. A ratio is a proportional factor between two similar objects of different sizes. The main difference between motor and pump is that a motor is a device that converts electricity to mechanical energy which results in motion. It converts the energy provided by a prime mover, such as an electric motor, steam turbine, or gasoline engine, to energy. In either case, gravity systems tend to involve high capital costs but low operating costs. The rotor has salient poles and a cage so that it starts like an induction motor, and runs like a synchronous motor. The impeller is typically connected to an electric motor which provides the energy to be transferred to the liquid. The choice of pump for a given application depends largely on how the pump headflow characteristics match the requirement of the system downstream of the pump. Motor is an electrical machine which converts electrical energy into mechanical energy and pump is mechanical device which converts mechanical energy into work to be done. A centrifugal pump works by converting the energy of a spinning impeller to increase the velocity of a liquid. Once the pump flow is restricted, pressure will build up to the setting of the compensator and then the pump will destroke to the level needed to maintain the compensator pressure setting.
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