'n Verbrandingskamer bestaan uit' n buis verbrandingskamer van 15 [cm] in deursnee, Saamgeperstelug vloei in die buis by 550 [K], 480 [kPa] en 80 [m/s] in, Brandstof met 'n hitte waarde van 42 000[kJ/kg] word in die lug ingespuit en is met' n lug-brandstof verhouding van 40, Benader die ontbrandingproses as 'n hitte-oordrag tot lug, Aanvaar k = 1,4 cp = 1,005 [kJ/kg-K] en R = 287 [J/kg-K], Bepaal:1) Die temperatuur, druk, snelheid en Mach getal by die uitlaat van die verbrandingskamer,p = 15 cm1 k|T₁=550 [K]P₁ = 480 [kPa]V₁ = 80 [m/s]mHV = 4200012|[kJ/kg]T₂ = ? [K]P₂ = ? [kPa];V₂ = ? [m/s];Ma₂ = ?A combustion chamber consist of tubular combustors of 15 cm diameter, Compressed air enters thetubes at 550 [K], 480 [kPa] and 80 [m/s], Fuel with a heating value of 42 000 [kJ/kg] is injected into theair and is burned with an air-fuel ratio of 40, Approximate combustion as a heat transfer process to air,Take for air k = 1,4 cp = 1,005 [KJ/Kg-K] and R = 287 [J/kg-K], Determine :1) The Temperature, Pressure, Velocity and Mach number at the exit of the combustion chamber,

P1 = 480 kPaT1 = 550KV1=80 m/sAir-Fuel ratio = 40Heat flow rate = 42,000 kJ/kg

'n Verbrandingskamer bestaan uit' n buis verbrandingskamer van 15 [cm] in deursnee, Saan lug vloei in die buis by 550 [K], 480 [kPa] en 80 [m/s] in, Brandstof met 'n hitte waarde van 42 [kJ/kg] word in die lug ingespuit en is met' n lug-brandstof verhouding van 40, Benader die o proses as 'n hitte-oordrag tot lug, Aanvaar k = 1,4 cp = 1,005 [kJ/kg-K] en R = 287 [J/kg-K], 1) Die temperatuur, druk, snelheid en Mach getal by die uitlaat van die verbrandingskamer, ø= 15 cm 1 k |T₁= 550 [K] m 12 | T₁₂ = P₁ =

'n Verbrandingskamer bestaan uit' n buis verbrandingskamer van 15 [cm] in deursnee, Saan lug vloei in die buis by 550 [K], 480 [kPa] en 80 [m/s] in, Brandstof met 'n hitte waarde van 42 [kJ/kg] word in die lug ingespuit en is met' n lug-brandstof verhouding van 40, Benader die o proses as 'n hitte-oordrag tot lug, Aanvaar k = 1,4 cp = 1,005 [kJ/kg-K] en R = 287 [J/kg-K], 1) Die temperatuur, druk, snelheid en Mach getal by die uitlaat van die verbrandingskamer, ø= 15 cm 1 k |T₁= 550 [K] m 12 | T₁₂ = P₁ =

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

'n Verbrandingskamer bestaan uit' n buis verbrandingskamer van 15 [cm] in deursnee, Saamgeperste
lug vloei in die buis by 550 [K], 480 [kPa] en 80 [m/s] in, Brandstof met 'n hitte waarde van 42 000
[kJ/kg] word in die lug ingespuit en is met' n lug-brandstof verhouding van 40, Benader die ontbranding
proses as 'n hitte-oordrag tot lug, Aanvaar k = 1,4 cp = 1,005 [kJ/kg-K] en R = 287 [J/kg-K], Bepaal:
1) Die temperatuur, druk, snelheid en Mach getal by die uitlaat van die verbrandingskamer,
p = 15 cm
1 k
|T₁=550 [K]
P₁ = 480 [kPa]
V₁ = 80 [m/s]
m
HV = 42000
12
|
[kJ/kg]
T₂ = ? [K]
P₂ = ? [kPa];
V₂ = ? [m/s];
Ma₂ = ?
A combustion chamber consist of tubular combustors of 15 cm diameter, Compressed air enters the
tubes at 550 [K], 480 [kPa] and 80 [m/s], Fuel with a heating value of 42 000 [kJ/kg] is injected into the
air and is burned with an air-fuel ratio of 40, Approximate combustion as a heat transfer process to air,
Take for air k = 1,4 cp = 1,005 [KJ/Kg-K] and R = 287 [J/kg-K], Determine :
1) The Temperature, Pressure, Velocity and Mach number at the exit of the combustion chamber,

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Step 1: Write the given data with suitable variables-

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Step 2: Determine the value of heat transfer.

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Step 3: Determine the exit Mach number.

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Step 4: Determine the exit properties of the system.

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