Question

Plot the ideal Brayton Cycle, the Brayton Cycle as implemented
in the TurboGcn experiment,

and the ideal Diesel Cycle on pressure-volume and
temperature-entropy diagrams. Numerical

values need not be given.

Answer #1

An ideal Otto cycle engine, an ideal Diesel cycle engine, and a
Stirling engine all have a maximum volume of 1 liter. The volume at
the end of combustion for the Otto and Diesel engines is 0.1 liter.
The minimum volume for the Stirling engine is 0.1 liter. All three
engines operate with air initially at 100 kPa, and have a minimum
temperature of 300 K and a maximum temperature of 1200 K. Determine
how much work is done for...

In a Dual cycle the heat transfer during the constant volume
process is double that during the constant pressure process. The
compression ratio is 14 and the air initial conditions are 1 bar
and 27oC. If the maximum pressure in the cycle is 60 bar,
calculate:
Maximum temperature
Heat added at constant volume and constant pressure per kg of
air
Cycle thermal efficiency
Net work per kg of air
Exergy destroyed associated with the cycle. Assume the source
temperature to...

1) An air-standard Otto cycle has a compression ratio of 9. At
the beginning of the compression process, the temperature is 20°C,
and the pressure is 100 kPa. The heat added is 500 kJ/kg. Determine
the cycle efficiency, work output, and the heat rejected
2) An air-standard Otto cycle operates with a minimum
temperature of 300 K and a maximum temperature of 1700 K. The
compression ratio of the cycle is 7. At the beginning of the
compression process, the...

10) An air-standard Otto cycle has a compression ratio of 9. At
the beginning of the compression process, the temperature is 20°C,
and the pressure is 100 kPa. The heat added is 500 kJ/kg. Determine
the cycle efficiency, work output, and the heat rejected.
11)An air-standard Otto cycle operates with a minimum
temperature of 300 K and a maximum temperature of 1700 K. The
compression ratio of the cycle is 7. At the beginning of the
compression process, the pressure...

A
diesel cycle operates with a compression ratio of 16:1. The
conditions at the beginning of compression are T= 90 F , p= 14.6
psia. The maximum volume in the cylinder is 85 in^3. The maximum
temperature in the cycle is 1740 degrees R. The cycle can be
considered ideal, except, that the compression stroke is only
polytropic with n = 1.31.
A) what is the mass of (air + fuel) in the cylinder?
B) what is the maximum pressure...

1) An ideal gas is contained in a
piston-cylinder device and undergoes a power cycle as follows:
1-2 isentropic compression from an initial
temperatureT1= 20 degree celsius with a compression ratio
r = 5
2-3 constant pressure heat addition 3-1 constant volume heat
rejection
The gas has constant specific heats with cv = 0.7
kJ/kg·K and R= 0.3 kJ/kg·K.
(a) Sketch the
P-v and T-s diagrams for the cycle.
(b) Determine the heat
and work interactions for each pro-cess, in...

An air-standard Brayton cycle has a compressor pressure ratio of
10. Air enters the compressor at p1 = 14.7 lbf/in.2, T1 = 70°F,
with a mass flow rate of 90,000 lb/h. The turbine inlet temperature
is 1800°R. Calculate the thermal efficiency and the net power
developed, in horsepower, if (a) the turbine and compressor
isentropic efficiencies are each 100%. % hp (b) the turbine and
compressor isentropic efficiencies are 88 and 84%, respectively. %
hp (c) the turbine and compressor...

1a. An air-standard cycle consists of the following processes:
isentropic compression from 15 ?C, 1.01 bar through a compression
ratio of 5:1; heat addition at constant volume of 2600 kJ/kg;
isentropic expansion to the initial volume; heat rejection at
constant volume. Sketch the cycle on p-v and T-s diagrams, and
calculate its ideal efficiency, mean effective pressure and peak
pressure.
Answers(0.475, 18.9 bar, 73.0 bar)
b. The cycle is problem (a) is modified so that the heat is
added
(a)...

A Diesel cycle engine is analyzed using the air standard
method. Given the conditions at state 1, compression ratio
(r), and cutoff ratio (rc) determine the efficiency and other
values listed below.
Note: The gas constant for air is R=0.287 kJ/kg-K.
--Given Values--
T1 (K) = 322
P1 (kPa) = 120
r = 11.5
rc = 1.6
Specific internal energy (kJ/kg) at state 1: 229.86
Relative specific volume at state 1= 520.52
Relative specific volume at state 2= 45.26
Temperature...

A Diesel cycle engine is analyzed using the air standard
method. Given the conditions at state 1, compression ratio
(r), and cutoff ratio (rc) determine the efficiency and other
values listed below.
Note: The gas constant for air is R=0.287 kJ/kg-K.
--Given Values--
T1 (K) = 322
P1 (kPa) = 120
r = 11.5
rc = 1.6
Specific internal energy (kJ/kg) at state 1: 229.86
Relative specific volume at state 1= 520.52
Relative specific volume at state 2= 45.26
Temperature...

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