Nitrogen (N2) at 130°F, 20 psi and a mass flow rate of 24 lb/min enters an insulated control volume operating at steady
Posted: Mon May 16, 2022 5:44 am
Nitrogen (N2) at 130°F, 20 psi and a mass flow rate
of 24 lb/min enters an insulated control volume operating at
steady state and mixes with oxygen (O2) entering as a
separate stream at 220°F, 20 psi and a mass flow rate of
65 lb/min. A single mixed stream exits at 17 psi. Kinetic and
potential energy effects can be ignored. Using the ideal gas model
with constant specific heats of 0.249 BTU/lb ºR for nitrogen
and 0.222 BTU/lb ºR for oxygen.
(a) If there is no significant heat transfer with the
environment, determine the exit temperature.
(b) Determine the total molar flow rate.
(c) Determine the rate of change in entropy for the
system
of 24 lb/min enters an insulated control volume operating at
steady state and mixes with oxygen (O2) entering as a
separate stream at 220°F, 20 psi and a mass flow rate of
65 lb/min. A single mixed stream exits at 17 psi. Kinetic and
potential energy effects can be ignored. Using the ideal gas model
with constant specific heats of 0.249 BTU/lb ºR for nitrogen
and 0.222 BTU/lb ºR for oxygen.
(a) If there is no significant heat transfer with the
environment, determine the exit temperature.
(b) Determine the total molar flow rate.
(c) Determine the rate of change in entropy for the
system