1. ideal compression
2. adiabatic compression
3. botii isothermal and adiabatic compression
4. isothermal compression
isothermal compression
1. radial flow
2. axial flow
3. centrifugal
4. combination of above
axial flow
1. cools the delivered air
2. results in saving of power in compressing a given volume to given pressure
3. is the standard practice for big compressors
4. enables compression in two stages
results in saving of power in compressing a given volume to given pressure
1. one adiabatic, two isobaric, and one constant volume
2. two adiabatic and two isobaric
3. two adiabatic, one isobaric and one constant volume
4. one adiabatic, one isobaric and two constant volume
one adiabatic, two isobaric, and one constant volume
1. one adiabatic, two isobaric, and one constant volume
2. two adiabatic and two isobaric
3. two adiabatic, one isobaric and one constant volume
4. one adiabatic, one isobaric and two constant volume
two adiabatic and two isobaric
1. 1
2. 1.2
3. 1.3
4. 1.4
1
1. it requires very big cylinder
2. it does not increase pressure much
3. it is impossible in practice
4. compressor has to run at very slow speed to achieve it
compressor has to run at very slow speed to achieve it
1. mechanical efficiency
2. volumetric efficiency
3. isothermal efficiency
4. adiabatic efficiency
mechanical efficiency
1. compression index
2. compression ratio
3. compressor efficiency
4. mean effective pressure
mean effective pressure
1. as large as possible
2. as small as possible
3. about 50% of swept volume
4. about 100% of swept volume
as small as possible