For minimum compression work in a 2 - stage reciprocating air compressor, which of the following expressions gives the ratio of low pressure cylinder to high pressure cylinder diameters?Where P1 P2 and P3 are suction, intermediate and delivery pressures respectively.

\({\left( {\frac{{{P_3}}}{{{P_2}}}} \right)^{\frac{1}{4}}}\)

\({\left( {\frac{{{P_3}}}{{{P_1}}}} \right)^{\frac{1}{4}}}\)

\({\left( {\frac{{{P_3}}}{{{P_1}}}} \right)^{\frac{1}{3}}}\)

\({\left( {\frac{{{P_3}}}{{{P_1}}}} \right)^{\frac{1}{2}}}\)

For minimum compression work in a 2 - stage reciprocating air compress

1.	For minimum compression work in a 2 - stage reciprocating air compressor, which of the following expressions gives the ratio of low pressure cylinder to high pressure cylinder diameters?Where P1 P2 and P3 are suction, intermediate and delivery pressures respectively.
A.	\({\left( {\frac{{{P_3}}}{{{P_1}}}} \right)^{\frac{1}{4}}}\)
B.	\({\left( {\frac{{{P_3}}}{{{P_1}}}} \right)^{\frac{1}{3}}}\)
C.	\({\left( {\frac{{{P_3}}}{{{P_1}}}} \right)^{\frac{1}{2}}}\)
D.	\({\left( {\frac{{{P_3}}}{{{P_2}}}} \right)^{\frac{1}{4}}}\)
Answer» D. \({\left( {\frac{{{P_3}}}{{{P_2}}}} \right)^{\frac{1}{4}}}\)

Discussion

No Comment Found

Related MCQs

The propulsive power of the rocket is (where v1 = Jet velocity, and v2 = Air-craft velocity)
In n1 and n2 are the indices of compression for the first and second stage of compression, then the ratio of workdone on the first and second stages (W1/W2) with perfect intercoooing is given by
A 3 m3/min compressor means that it
In centrifugal compressors, there exists a loss of energy due to the mismatch of direction of relative velocity of fluid at inlet with inlet blade angle. This loss is known as
Axial flow compressor has the following advantage over centrifugal compressor:
Cooling of reciprocating compressor cylinder:1) Increases the volumetric efficiency2) Increases the work input3) Decreases the volumetric efficiency4) Decreases the work inputWhich of the above statements are correct?
Consider the following statements about two-stage reciprocating compressors:1. For the same pressure ratio the volumetric efficiency of a two-stage compressor is more than that of single stage compressor.2. A two-stage compressor requires minimum work when inter-cooling is perfect.3. The intercooler pressure p2, is the average of inlet pressure p1, and delivery pressure p3Which of the above statements are correct?
In a two stage reciprocating air compressor with a suction pressure of 4 bar and delivery pressure of 16 bar, the ideal intercooler pressure will be
An air compressor compresses atmospheric air at 0.1 MPa and 27°C by 10 times of air inlet pressure. During compression, the heat lost to the surrounding is estimated to be 5% of compression work. Air enters the compressor with a velocity of 40 m/s and leaves with 100 m/s. The inlet and exit cross-sectional areas are 100 cm2 and 20 cm2 respectively. The temperature of air at the exit from the compressor will be
Following points express the effect of keeping high clearance volume for the cylinders in reciprocating compressor. Which one of following points is disagreeable?

For minimum compression work in a 2 - stage reciprocating air compressor, which of the following expressions gives the ratio of low pressure cylinder to high pressure cylinder diameters?Where P1 P2 and P3 are suction, intermediate and delivery pressures respectively.

Discussion

No Comment Found

Related MCQs

Reply to Comment