( 20 points) (Variable Specific Heat of Air): As shown in class, the specific heat of air is not completely constant with temperature. As a first approximation, the constant volume specific heat can be given by: c_(v)(T)=0.0001T 0.6821 where T is in K and c_(v ) is in k(J)/(k)g^(**)K. Suppose 0.1kg of air is contained in a rigid vessel at atmosph

Question

( 20 points) (Variable Specific Heat of Air): As shown in class, the specific heat of air is not completely constant with temperature. As a first approximation, the constant volume specific heat can be given by:

c_(v)(T)=0.0001T 0.6821

where T is in K and

c_(v )

is in

k(J)/(k)g^(**)K

. Suppose

0.1kg

of air is contained in a rigid vessel at atmospheric conditions of

300K

and

100kPa

. Then,

1200W

of heat is added to the air until its temperature reaches 800 K . Heat losses to the environment can be neglected. (a) ( 3 points) Determine the volume of the vessel. (b) ( 12 points) Determine the time that this process will take. You will need to set up a transient energy balance equation and then perform an integration. HINT: Be careful with units when calculating. (c) ( 5 points) How would your answer to part (b) compare if you used a constant volume specific heat at the averaged temperature during the process (i.e. 550 K )?

Accepted Answer

Expert Answer to -   ( 20 points) (Variable Specific Heat of Air): As shown in class, the specific heat of air is not c

Answer

Solution for -   ( 20 points) (Variable Specific Heat of Air): As shown in class, the specific heat of air is not c

Answer

This an additional answer to -   ( 20 points) (Variable Specific Heat of Air): As shown in class, the specific heat of air is not c

(Solved): ( 20 points) (Variable Specific Heat of Air): As shown in class, the specific heat of air is not c ...

View Expert Answer

Expert Answer

Buy This Answer $5

Place Order

We Provide Services Across The Globe