Question

8.) A piston-cylinder arrangement contains 2 kg of carbon dioxide ($CO_2$) and undergoes the cycle shown in the figure. Determining the following: (a) Determine the temperatures (K) at Points 1, 2, and 3 (6 pts) (b) Find the work done (on or by the gas) for each process (1-2, 2-3, and 3-1) (assume n=1.33), (kJ) (9 pts) (c) Calculate the net heat transfer (kJ) for this cycle. (3 pts) (Total 18 pts) $P$ (kPa) 3 $PV^n$ = constant 700 100 1 2 $V$ ($m^3$) 0.2 9.) Determine the change in enthalpy (in units of kJ/kg) for $H_2$ when it is cooled from 227 $^\circ$C to 27 $^\circ$C by (a) using the gas Tables (3 points), (b) using the average specific heats (3 points) and by (c) integrating the specific heat as a function of temperature (5 points). (11 total points).

          8.) A piston-cylinder arrangement contains 2 kg of carbon dioxide ($CO_2$) and undergoes the cycle
shown in the figure. Determining the following:
(a) Determine the temperatures (K) at Points 1, 2, and 3 (6 pts)
(b) Find the work done (on or by the gas) for each process (1-2, 2-3, and 3-1) (assume
n=1.33), (kJ) (9 pts)
(c) Calculate the net heat transfer (kJ) for this cycle. (3 pts) (Total 18 pts)
$P$ (kPa)
3
$PV^n$ = constant
700
100
1
2
$V$ ($m^3$)
0.2
9.) Determine the change in enthalpy (in units of kJ/kg) for $H_2$ when it is cooled from 227 $^\circ$C to 27
$^\circ$C by (a) using the gas Tables (3 points), (b) using the average specific heats (3 points) and by
(c) integrating the specific heat as a function of temperature (5 points). (11 total points).

8.) A piston-cylinder arrangement contains 2 kg of carbon dioxide (CO2) and undergoes the cycle
shown in the figure. Determining the following:
(a) Determine the temperatures (K) at Points 1, 2, and 3 (6 pts)
(b) Find the work done (on or by the gas) for each process (1-2, 2-3, and 3-1) (assume
n=1.33), (kJ) (9 pts)
(c) Calculate the net heat transfer (kJ) for this cycle. (3 pts) (Total 18 pts)
P (kPa)
3
PV^n = constant
700
100
1
2
V (m^3)
0.2
9.) Determine the change in enthalpy (in units of kJ/kg) for H2 when it is cooled from 227 ^∘C to 27
^∘C by (a) using the gas Tables (3 points), (b) using the average specific heats (3 points) and by
(c) integrating the specific heat as a function of temperature (5 points). (11 total points).

Added by James H.

Question

Please give Ace some feedback