Pdf format this file type includes high resolution graphics and schematics when applicable. Apr 16, 2015 a linear actuator moves a load, which can be an assembly, components, or a finished product, in a straight line. Motors, on the other hand, are electromechanical devices that are used to convert electrical energy. Sep 15, 2019 the difference between these two methods is the way in which the motor efficiency is established. Khalil encyclopedia of life support systems eolss 1. When application horsepower requirements fall between two standardized values, the larger size is usually chosen. Another difference is that compressor achieves pressure rise by volume change alone while pumps can achieve this by either change in volume or by increasing momentum of fluid. As the winding temperature inside the motor can not be measured directly, measure the surface temperature of the motor case as a reference. Key difference atpase vs atp synthase adenosine triphosphate atp is a complex organic molecule that participates in the biological reactions. Both pumps and motors are mechanical devices used for a varied range of engineering works. Dec 01, 2016 hydraulic motors are rotary actuators. Understand the difference between centrifugal pumps and. The difference in pressure head the term pressure head refers to the energy associated with pressure between these two points is known as the total head. The guts of the pump are made up of gaskets, impellers, diffusers, and.
The distinction between natural law in the politicallegal sense and law. It converts energy into a motion or force and can be powered by pressurized fluid. T h e s e d i m en s i o n s a r e s p e c i f i c t o e a c h m anu f a c t u r e r. What is the difference between dc motors and stepper.
The sv pump is a nonself priming vertical multistage pump coupled to a standard motor. The application of thermodynamics to pump systems 2 7 the energy corresponding to the heat loss q f must be supplied by the pump. Another major difference between the pump types is the effect of viscosity on the. The whole assembly is submerged in the fluid to be pumped. It simply facilitates movement of fluids from one place to another using suction or pressure or both. The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between pump and the fluid surface. Difference between atpase and atp synthase compare the.
Difference between single phase and three phase water pumps. A pump requires a driving mechanism such as a motor or an engine to operate. A linear actuator moves a load, which can be an assembly, components, or a finished product, in a straight line. Before going to discuss the differences between them, we have to know the basic definition as well as the working of pump and motor. In general the motor and the power supply must be changed. What is difference between hydraulic pump and hydraulic motor. Positive static suction head arrangement the scheme in figure 3. What is the difference between a motor and pump engineers. Motor and pump difference between pump and motor motor vs pump learning engineering april 10, 2018 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 device that is used to transfer a fluid from one place to another. Suitable for application pump speeds up toapi674 1995andhydraulicinstitutespeedlimitations.
The fe4a comes with state of the art smart diagnostics. As the name suggests, it relies on the principal of centrifugal force. For our ac motor, the temperature difference between the windings and the motor case is up to 30 c. Requirements of domestic appliances are listed in iec 60335, which specifies somewhat different stricter requirements of the motors. Dc motor systems are definitely a great for the budget minded shooter. As a general rule the available torque output from a motor of a particular frame size will increase with increased body length. Fundamentals of fluid mechanics chapter 12 pumps and. Whereas pump is a hydro mechanical device that convert mechanical torque into hydraulicpressure energy. Dec 29, 2012 i think the basic difference is that pump is used increase energy of fluids but compressor is used to increase energy of gases alone. Centrifugal pumps the centrifugal pump produces a head and a flow by increasing the velocity of the. Velocity diagrams at the inlet and exit of a centrifugal pump impeller.
The role of a pump is to transform mechanical power into hydraulic power by increasing the. The difference between the actual rotation speed and the. Sep 30, 2012 what is the difference between a motor and a pump. A pump does not convert one form of energy to a different form of energy, but the motor converts electrical energy to mechanical energy. These kinds of facts make difference between single phase and three phase water pumps.
Download practical centrifugal pumps design, operation and. The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between pump and the. We have already discussed what is a pump in the above. Unesco eolss sample chapters mechanical engineering types and performance of pumps and compressors essam e. Types and performance of pumps and compressors essam e. Understanding motor nameplate information nema vs iec.
This pressure difference drives the fluid through the system or plant. 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. Pump mechanical run test is performed for 4 hours to proves pump work in stable condition and all variables are within acceptance range. I have worked at inyo for years and if i had a nickel for every time a caller described a motor as a pump or a pump as a motor i would have. Running, or rated watts are the continuous amount of watts needed to continually run your appliances. It is known as molecular unit of currency of intracellular energy transfer. This motor type has some advantages such as very low inertia and a optimized magnetic flow path with no coupling between the two stator windings.
The fundamental differences between a centrifugal pump and a positive displacement pump is made clear. What is the difference between vfd and soft starter. Difference between pump and motor difference between. Before moving further on differences lets have an overview of both the vapour compression and vapour absorption refrigeration system. Difference between pump and motor basics of pump and motor. A twohundred fifty horsepower electric motor is used to power the pump. A submersible pump is a device which has a hermetically sealed motor closecoupled to the pump body. It converts the energy provided by a prime mover, such as an electric motor, steam turbine, or. The different types of cooling compressors rotaryvane compressor a rotaryvane compressor is also known as a rotary piston compressor because the function of the vane is similar to that of a piston shown in figure 3. 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. The three main types of pumps are known as direct lift pumps, displacement pumps and gravity pumps.
Difference between dc and ac motors difference between. Read and select the best pump as per your requirement. Difference between single phase and three phase water. Apr 10, 2018 motor and pump difference between pump and motor motor vs pump learning engineering april 10, 2018 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 device that is used to transfer a fluid from one place to another. Difference between stepper motor and dc motor circuit globe. Today we will study the difference between vapour compression and vapour absorption refrigeration system in detail. A submersible pump is a device which has a hermetically sealed motor close coupled to the pump body. The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between the pump and the fluid surface. This is shown in figure 1 for the two alternative suction arrangements. A threephase pump has multi phases, so it can be reversed easily. Practical centrifugal pumps design, operation and maintenance by the authors paresh girdhar, moni is a comprehensive guide to pump construction, application, working, maintenance and management issues.
Motor is an electromechanical device, which consist of rotating conductors and magnetic field to transform electrical energy into mechanical torque. A hydraulic motor is a device which converts fluid power into rotary power or converts. 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. Motor is the driving member which converts the the electrical energy into the mechanical energy. The speed of the pump can be reduced or the existing impeller can be trimmed or new lower size impeller. A pump is a device which moves fluids by mechanical action, from one place to the other.
The net force f f required to balance the friction force is f 1f 2 these forces are the result of the action of pressures p 1 and p 2 see figure 26. Posted by mohammed sulieman in linkedin abdulqadir i think ur answer is right and 2 make it more simple and easy 2 understand allow me 2 do this. And the pump is use to lift the liquid from the low pressure liquid system to the high pressure. It converts the energy provided by a prime mover, such as an electric motor, steam turbine, or gasoline engine, to energy. This enables faster troubleshooting providing ease of. Stepper motors digital stepper motors are digital motors, we actually send position signals four wire to the motor to drive them.
What is the difference between running watts and starting watts. Fundamentals of fluid mechanics chapter 12 pumps and turbines. Difference between pump and motor compare the difference. The response time of the motor and the effect of overloading. When selecting an emergency generator system, you need to calculate both your running and your starting wattage requirements.
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. Utility ac is applied to the motors terminals and powers the stationary windings. Download practical centrifugal pumps design, operation. The difference between these two methods is the way in which the motor efficiency is established. Nema motor dimensions reference chart a ft e r l e t t e r i n d i c a t e s t h e n u m b e r i s a n app r o x i m a te v a l ue. Review different pump types commonly used understand the difference between centrifugal pumps and positive displacement pumps understand the working principle of the tuthill. The negative static suction, often referred to as the. The vane splits the space between the cylinder and the.
These qualities are essential in some applications. The total static head therefore depends on the site conditions between the suction and delivery. Mechanical engineering types and performance of pumps and compressors essam e. The main difference between the two is a vfd that can vary the speed of a motor while a soft starter only controls the starting and stopping of that motor. But there are other simpler options rather than replacing the pump. Likewise a size 23 stepper motor has a body diameter of 2. Difference between pump and motor the main difference between motor and pump is that a motor is a device that converts electricity to mechanical. Difference between stepper motor and dc motor the differences between stepper motor and direct current dc motor are explained considering factors like nature of loop of operation of the motor, controlling, the presence of brushes, its motion and displacement. Whats the difference between asynchronous and synchronous. However, the name rotary actuator is reserved for a particular type of unit that is limited in rotation to less than 360. The mechanical run test is performed after successful completion of the pump performance test and net positive suction head test based on the api 610, the pump shall be run for 4 hours at the rated flow and pump operating parameters shall be recorded.
Difference between vapour compression and vapour absorption pdf. Size and power in addition to being classified by their step angle stepper motors are. Pump is the driven member which converts the mechanical energy produce by the motor into the pressure energy. It is recommended that you download this pdf document and assignment to. The wet ends outer component is the housing which is essentially the hull of the pump. Click here to download classification of pumps pdf. The guidelines for each heat resistant class are summarized in the table below. Motor and pump difference between pump and motor motor. Whats the difference between pneumatic, hydraulic, and. The shaduf is the first device used for lifting water in several civilisations and thus the earliest form of pump. Some energy is always lost as sound, vibrations, and heat. What we now need is a new pump which will operate with its best efficiency point at c. The difference between pump and motor pump include the following. On the other hand ac or alternating current electric motors are used in a completely different process drawing upon the kind of ac motor being used.
Pump is a mechanical device that converts mechanical torque into hydraulic energy. Design and specific qualities of one, two and three spindle pumps, which are classified as. Transport liquid from the suction to discharge port. The main difference between motor and pump is that a motor is a device that converts electricity to mechanical energy which results in motion. An induction motor has the unique quality that there is no electrical connection between the stationary and rotating windings. The blue pump curve represents either of these options. This means that we can know exactly where they are at all times. Heres the difference between a pool pump and motor. Before moving further on differences lets have an overview of both the vapour compression. A system equation will be developed based on fundamental principles from which the total head of the pump can be calculated, as well as the pressure head anywhere within the system. Motor and pump difference between pump and motor motor vs. Dc or direct current motors work in particular situations whereby the speed of the motor needs to be externally controlled. It is, essentially, the earliest form of machine, dating back to ancient egypt. 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.
Centrifugal pumps develop pressure by increasing the velocity of the liquid liquid is literally flung out of the cutwater. The body length may however, vary from motor to motor within the same frame size classification. Nov 14, 2017 so, the key difference between atpase and atp synthase is, atpase is the enzyme that breaks down atp molecules while the atp synthase involves in atp production. Today we will study the difference between vapour compression and vapour absorption refrigeration system in detail note. 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. A submersible pump or sub pump, electric submersible pump esp is a device which has a hermetically sealed motor closecoupled to the pump body. The liquid end, located between the upper cover and the pump casing, is. Temperature rise and heat resistant class of ac motor. At the bottom of the articles you can download pdf.
347 1062 1552 886 626 858 858 604 1164 969 1008 47 1030 1374 449 391 1419 1341 360 885 563 199 257 575 544 779 938 883 74 787 1136 912 419 624 928 566 139 537 1215 495 908