Question

A ramjet engine is analyzed using the air standard method. Given specific operating conditions determine the temperature, pressure, and enthalpy at each state, the exit velocity, and the rate of heat addition (kJ/kg).

Given Values:
T1 (K) = 293
P1 (kPa) = 87
V1 (m/s) = 630
rc = 2.33

a) Determine the specific enthalpy (kJ/kg) at state 1.
b) Determine the relative pressure at state 1.
c) Determine the specific enthalpy (kJ/kg) at state 2.
d) Determine the temperature (K) at state 2.
e) Determine the relative pressure at state 2.
f) Determine the pressure (kPa) at state 2.
g) Determine the temperature (K) at state 3.
h) Determine the specific enthalpy (kJ/kg) at state 3.
i) Determine the relative pressure at state 3.
j) Determine the relative pressure at state 4.
k) Determine the specific enthalpy (kJ/kg) at state 4.
l) Determine the velocity (m/s) at the exit of the turbojet engine.
m) Determine the rate of heat addition (kJ/kg).

Answer 1

Go to explaination and attachment for detailed answer.

Step-by-step explanation:

Specific enthalpy, h, is the total energy of 1 kg of the steam, made up of internal energy and pressure energy.

Relative pressure is the atmospheric pressure corrected to sea-level conditions.

Temperature can be defined as a measure of the warmth or coldness of an object or substance with reference to some standard value.

Please kindly check attachment for details of the answer.