Question

*NOTE* PLEASE WRITE NEATLY AND EXPLAIN: YOUR EQUATIONS USED, YOUR WORKING & THE TABLES YOU GET VALUES FROM!
P.S. Please do your orginal work, thank you!

PROBLEM #8: A tank of air at 25 psia and 100°F has a volume of 20 ft'. Heat is transferred to the air from a reservoir at 1500°R until the temperature of the air in the tank is 660°F. The surrounding atmosphere is at 60°F and 14.7 psia (a) Calculate the initial and final exergy of the air, in Btu's. (b) Calculate the maximum useful work associated with the process, in Btu's.

Answer 1

Molume of tank V, 200-5L39 Mou of aiy in tank () 02X310.12 .093

1.094 x 1.005 | (31c1-286400-281. Pol n 3to- o, 2st Ơ,' 122 .CH K1: It6.L1 3Btu 1) Man:Mum U11ht klevk inte ledj 2 (22 4-0.84