(a) the exit temperature and,
Fuel with heating value (HV) of 39,000 kJ/kg is burned by spraying in to 16-cm-diameter tabular combustion
chamber. The air enters at 450 K, 380 kPa, and 55 m/s as shown in Figure Q3. If the exit Mach number is 0.8,
determine
(a) the exit temperature and,
(b) the rate at which the fuel is burned.
Properties of air: Specific heat capacity ratio k = 1.4, Specific heat at constant pressure c, = 1.005 kJ/kg.K,
and Gas constant R = 0.287 kJ/kg.K.
Use Appendix 2 for Rayleigh flow functions for an ideal gas with k = 1.4
Assume:
1. Rayleigh flow (i.e., steady one-dimensional flow of an ideal gas with constant properties through a
constant cross-sectional area duct with negligible frictional effects) are valid.
2. combustion is comple
so, and it is treated as a heat addition process, with no change in the chemical composition of flow
3.The increase in mass flow rate due to fuel in ection is disregardeo.
![Fuel
P₁ = 380 kPa
T₁ = 450 K
V₁ = 55 m/s
Combustor
tube
Figure Q3.
Ma₂
0.8](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6a3ef4a2-e957-474e-8a7c-11ce41c2e7f4%2Fe8298861-cf0b-4e65-8fae-0535875852ee%2F0saadic_processed.png&w=3840&q=75)
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