Air is compressed in an isentropic process from an initial pressure and temperature of p1 = 90 kpa and t1=22°c to a final pressure of p2=900 kpa. determine: a)- the final temperature of the air. b)-the work done per kg of air during the process.

a)

b)Work done per kg of air=196.84 KJ/Kg

Explanation:

Given: for air.

We know that  

So  

(a)

(b)Work for adiabatic process

  W=

We know that PV=mRT for ideal gas.

 W=

Now by putting values

work per kg of air=

Work w=-196.84 KJ/Kg    (Negative sign indicate work given to input.)

So work done per kg of air=196.84 KJ/Kg

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

31

explanation: