Reciprocating Pump is a Positive Displacement type pump that works on the principle of movement of the piston in forwarding and backward directions whereas the Centrifugal pump uses the kinetic energy of the impeller to supply the liquid from one place to another place.
What is the principle of reciprocating pump?
The reciprocating pump works on the principle of positive displacement. A reciprocating piston pump consists of a piston that moves back and forth in a cylinder. The piston is connected with a crankshaft with the help of a connecting rod. This piston moves as the connecting rod move due to the motion of the crankshaft.
What is the principle of a centrifugal pump?
The basic principle on which a centrifugal pump work is that when a certain mass of liquid is made to rotate by an external force. It is thrown away from the central axis of rotation and a centrifugal head is developed which enables it to rise to higher levels may be ensured.
What is difference between centrifugal pump and reciprocating pump?
The main differences between Centrifugal Pump and Reciprocating Pump are the Centrifugal pump works low medium pressure head and Reciprocating Pump works high medium pressure head.
What are the principles of pumps?
The operating principle of the pump is to convert mechanical energy to pressure. In operation, a rotating impeller accelerates a liquid and as the area of the pump casing expands the velocity of the fluid is converted to pressure. As a result pressurized fluid exits the pump discharge.
What is the application of centrifugal pump?
Common Industrial Centrifugal Pump Applications
Fire protection systems. Sewage/slurry disposal. Food and beverage manufacturing. Chemical manufacturing.
Why centrifugal pump is called rotodynamic pump?
A rotodynamic pump is a kinetic machine in which energy is continuously imparted to the pumped fluid by means of a rotating impeller, propeller, or rotor, in contrast to a positive displacement pump in which a fluid is moved by trapping a fixed amount of fluid and forcing the trapped volume into the pump’s discharge.
What is the working principle of submersible pump?
Working principle
Electric submersible pumps are multistage centrifugal pumps operating in a vertical position. Liquids, accelerated by the impeller, lose their kinetic energy in the diffuser, where a conversion of kinetic to pressure energy takes place.
Which pump is best centrifugal or reciprocating?
Efficiency & Performance
In general, a reciprocating pump is more efficient than a centrifugal pump. Reciprocating machines are generally applied on low-flow/high-head service. Centrifugal pumps can have efficiencies as low as 40 percent on low-flow/high-head service.
What is the difference between centrifugal pump?
The main difference between these types of pumps and centrifugal is that positive displacement pumps will move fluid at the same speed regardless of the pressure on the inlet end and centrifugal pumps will not.
What is centrifugal pump with diagram?
Centrifugal Pump is a type of rotodynamic pump in which the flow through the pump is induced by the centrifugal force imparted to the liquid by rotation of the impeller.
What is electrical pump?
A pump is an equipment that transfers a fluid (liquid or gas) or slurries through the mechanical action by converting electrical power into hydraulic power. The working of a pump depends on various energy sources such as wind power, manual operation, engines, or electricity.
What are the 4 types of pumps?
Types of Pumps
- 1). Centrifugal Pumps. These types of pumps are most commonly used worldwide.
- 2). Vertical Centrifugal Pumps.
- 3). Horizontal Centrifugal Pumps.
- 4). Submersible Pumps.
- 5). Fire Hydrant Systems.
- 1). Diaphragm Pumps.
- 2). Gear Pumps.
- 3). Peristaltic Pumps.
What is a type of reciprocating pump?
There are three types of mechanism defined reciprocating pumps: piston, plunger and diaphragm or bellows. Valves at each end of the volume alternately close and open to isolate the higher pressure volume from the suction on the compression stroke and the higher pressure discharge from the volume on the return stroke.
What is the difference between centrifugal pump and submersible pump?
A submersible pump is installed underwater whereas a centrifugal pump is installed on the ground. Therefore, submersible pumps are used for groundwater extraction through deep wells and centrifugal pumps are ideal for water supply and drainage applications in urban areas or for industrial purposes.
How does a centrifugal work?
A centrifuge works by rotating at rapid speeds, thereby separating substances using the power of centripetal force (and the apparent centrifugal force more on that concept later). The force applied can reach several hundred or several thousand times that of the earth’s gravity.
What are the 2 types of centrifugal pumps?
What Are the Types of Centrifugal Pumps and Their Applications?
- Radial Centrifugal Pumps The design of these pumps facilitates an outward motion flow, which an impeller speeds up.
- Axial Centrifugal Pumps These pumps produce flow from the propelling motion of the impeller vanes, in other words, via a lifting effect.
What is cavitation in pump?
Cavitation occurs when the liquid in a pump turns to a vapor at low pressure. It occurs because there is not enough pressure at the suction end of the pump, or insufficient Net Positive Suction Head available (NPSHa). When cavitation takes place, air bubbles are created at low pressure.
What do you mean by impeller?
An impeller or impellor is a rotor used to increase the pressure and flow of a fluid. It is the opposite of a turbine, which extracts energy from, and reduces the pressure of, a flowing fluid.
Why pump is called positive displacement?
A positive displacement pump provides a constant flow at fixed speed, regardless of changes in pressure. The pump makes the fluid move by trapping a fixed amount and forcing the volume into the discharge pipe.Examples of positive displacement pumps are: diaphragm pumps.
Is submersible pump a centrifugal pump?
A submersible pump is a centrifugal pump (Figure 1), which is attached to an electric motor and oper- ates while submerged in water. The sealed electric motor spins a series of impellers (Figure 2). Each impeller in the series forces water through a diffuser into the eye of the one above it.
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