Question

J - ME 311011-Thermodynamics My courses / 2019 Summer - ME 311011/ June 3 - June 9/ Homework 5 A 3-m3 rigid tank contains hydrogen at 250 kPa and 550 K. The gas is now cooled until its temperature drops to 350 K. Treat hydrogen specific heat at 450 K determine ston 4 s remaining as an ideal gas. Using the arked out of kPa (a) the final pressure in the tank 00 P Flag question kJ (b) the amount of work (b) the amount of heat transfer Remember, the heat and work values can be positivr or negative. The sign indicates the direction of energy flow. If the work or heat is negative, do not drop the sign. Check Previous page Next page

Answer 1

Pi 250K9, TI- S5OR T2 3 s0 K spedicheats of Hydoogon Ta ble idea gds ad Temp 45O K 10.379よけ k9 K 14.501- 10.377 R CP- C 4.124 K R2 Supaw Canstant Vofume Rigid Tank A Nojume is canstanf

The amount of workdon rd Tankis stationaoy negledted Ape ideal qs P VT) Relaton PIN T2 P 2 P T2 TI PIy T2 250x 3SO Is9.10 kPq TI P2 59.10 kpg

mass enteos o n o ja is ctosed sysjem in which leaves A E Ein-Eaut AU fAke f A Pe - 9aut AU - 9ouut L AU Gout m T2-TI) m cN(Ti- T2) 3307k9 PIN 4.124x 550 RTI 0.3307x 10. 377x(550 - 350)- gaut 6 86 334 k out

Ans a) P2 59.16 KPa KJ b) 86 334 gaut