What is indicator diagram in reciprocating pumps explain the effect of acceleration in suction and delivery strokes using indicator diagram?

Effect of acceleration and friction on indicator diagram of reciprocating pump. As we have discussed in our previous post that the ideal indicator diagram of reciprocating pump will be basically a graph between the absolute pressure head in the cylinder and stroke length of the piston for one complete revolution.

What does an indicator diagram represents in a reciprocating pump?

Explanation: Indicator diagram of a reciprocating pump is the plot between Pressure head at suction and delivery vs stroke length. The area of the plot is proportional to the work done by the pump.

What is indicator diagram in fluid mechanics?

An indicator diagram is a chart used to measure the thermal, or cylinder, performance of reciprocating steam and internal combustion engines and compressors.

What is indicator diagram and its importance?

Indicator diagrams are used to assess the performance of each unit of the ship’s main engine. It is based on the indicator diagram that the overall performance of the engine is assessed. If there is any difference, it is important that the problem is rectified before starting the engine.

What is discharge through a reciprocating pump?

Discharge through the reciprocating pump: The discharge through a single acting reciprocating pump is given as. Q = Volume of water delivered in one revolution × number of revolutions per second. Q = V × N 60.

What is the working 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 meant by slip in a reciprocating pump?

What is Pump Slip? Slip is the loss of pumping capacity due to fluid leaking back through a pump from the discharge side to the inlet side.

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 types of indicator diagrams do you know?

There are four types of indicator diagrams:

• Power card.
• Draw card.
• Compression diagram.
• Light spring diagram.

What is sketch indicator diagram?

The indicator diagram (pv diagram or power card or work diagram), illustrates the pressure variations in the engine cylinder as a function of the main piston position. The diagram area can be integrated by means of a planimeter, and the mean indicated pressure calculated.

What is an indicator diagram What are the features and advantages How is it different from PV diagram?

A curve showing variation of volume of a substance taken along the X-axis and the variation of pressure taken along Y-axis is called an indicator diagram or P-V diagram. The shape of the indicator diagram shall depend on the nature of the thermodynamical process the system undergoes.

What type of flow does reciprocating pump have?

continuous flow
Explanation: The reciprocating pump has a continuous flow. It has a constant discharge even if head on the delivery side varies. Explanation: The reciprocating pump runs at a low speed. Its speed is less than 30m/min.

What is indindicator diagram of reciprocating pump?

Indicator diagram of a reciprocating pump is the plot between Pressure head at suction and delivery vs stroke length. The area of plot is proportional to the work done by the pump. It can be understood by studying delivery and suction strokes considering the head due to acceleration and static suction and delivery heads.

What is the area of plot of a reciprocating pump?

The area of plot is proportional to the work done by the pump. It can be understood by studying delivery and suction strokes considering the head due to acceleration and static suction and delivery heads. Indicator diagram of a reciprocating pump is the plot between Pressure head at suction and delivery vs stroke length.

How does a double acting reciprocating water pump work?

Hence, in case of double acting reciprocating pump, there will be two suction strokes and two delivery strokes for one complete revolution of crank and water will be discharged through the delivery pipes during these two delivery strokes.

What is the discharge pressure of a reciprocating pump?

Fig. 4.17. Schematic diagram illustrating a force of 10,000 pounds (44,482,216 N) acting on a piston with area of 50 in 2 (323 cm 2) yields a discharge pressure of 200 psi (1379 kPa). Reciprocating pumps, like reciprocating compressors, require inlet and outlet valves to ensure the liquid always travels from inlet to outlet.