Question
In: Mechanical Engineering
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Vd = 2.2...
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Vd = 2.2 L. At the beginning of compression, p1 = 95 kPa, and T1 = 290 K. The heat addition is 4.75 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K. b) the net work of the cycle, in kJ. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa.
Solutions
samet mamat answered 2 years agoRelated Solutions
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Vd = 2.2...
An air-standard dual cycle has a compression ratio of 9.1 and
displacement of Vd = 2.2 L. At the beginning of compression, p1 =
95 kPa, and T1 = 290 K. The heat addition is 5 kJ, with one quarter
added at constant volume and the rest added at constant pressure.
Determine: a) each of the unknown temperatures at the various
states, in K. b) the net work of the cycle, in kJ. c) the power
developed at 3000 cycles...
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Vd = 2.2...
An air-standard dual cycle has a compression ratio of 9.1 and
displacement of Vd = 2.2 L. At the beginning of compression, p1 =
95 kPa, and T1 = 290 K. The heat addition is 4.25 kJ, with one
quarter added at constant volume and the rest added at constant
pressure. Determine: a) each of the unknown temperatures at the
various states, in K. b) the net work of the cycle, in kJ. c) the
power developed at 3000 cycles...
An air-standard dual cycle has a compression ratio of 8.6 and displacement of Vd = 2.2...
An air-standard dual cycle has a compression ratio of 8.6 and
displacement of Vd = 2.2 L. At the beginning of compression, p1 =
95 kPa, and T1 = 290 K. The heat addition is 4.5 kJ, with one
quarter added at constant volume and the rest added at constant
pressure. Determine: a) each of the unknown temperatures at the
various states, in K. b) the net work of the cycle, in kJ. c) the
power developed at 3000 cycles...
At the beginning of the compression process of an air-standard dual cycle with a compression ratio...
At the beginning of the compression process of an air-standard
dual cycle with a compression ratio of 18, the temperature is 300K
and the pressure is 0.1 MPa. The pressure ratio for the constant
volume part of the heating process is 1:5:1. The volume ratio for
the constant pressure part of the heating process is 1:2:1.
Determine:
(a.) The temperature and pressure at the end of each process of
the cycle.
(b.) The thermal efficiency.
(c.) The mean effective pressure.
An air-standard dual cycle has a compression ratio of 14. At the beginning of compression, p1...
An air-standard dual cycle has a compression ratio of 14. At the
beginning of compression, p1 = 14.5
lbf/in.2, V1 = 0.5 ft3,
and T1 = 50°F. The pressure doubles during the
constant-volume heat addition process.
For a maximum cycle temperature of 3500°R, determine:
(a) the heat addition to the cycle, in Btu.
(b) the net work of the cycle, in Btu.
(c) the percent thermal efficiency.
(d) the mean effective pressure, in lbf/in.2
At the beginning of compression process of an air standard dual cycle operating with a compression...
At the beginning of compression process of an air standard dual
cycle operating with a compression ratio of 15.88, the pressure is
95 kPa and the temperature is 300 K. The cutoff ratio for the cycle
is 1.15. Determine the thermal efficiency of cycle, if the pressure
increases by a factor of 2.15 during the constant volume heat
addition process. Use table F2 for variation of specific heats with
temperature in the analysis.
An ideal dual cycle has a compression ratio of 15 and a cutoff ratio of 1.4....
An ideal dual cycle has a compression ratio of 15 and a cutoff
ratio of 1.4. The pressure ratio during constant-volume heat
addition process is 1.1. The state of the air at the beginning of
the compression is P1 = 98 kPa and T1 = 24°C.
Calculate the cycle’s net specific work, specific heat addition,
and thermal efficiency. Use constant specific heats at room
temperature.
The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process,...
The compression ratio of an air-standard Otto cycle is 9.5.
Prior to the isentropic compression process, the air is at 100 kPa,
35°C and 600 cm3 . The temperature at the end of the isentropic
expansion process is 800 K. Using specific heat values at room
temperature (25°C), determine
(a) the highest temperature and pressure in the cycle
(b) the amount of heat transferred in during the cycle (kJ)
(c) the thermal efficiency
(d) the mean effective pressure
Part (a)...
An ideal cold air-standard Otto cycle has a compression ratio of 9.2. At the end of...
An ideal cold air-standard Otto cycle has a compression ratio of
9.2. At the end of the expansion process, the pressure is 110 psi,
the temperature is 1020 °R and the specific volume is 3.435
ft3/lbm. The heat rejection from the cycle is 92 BTU/lbm of air.
Evaluate specific heat at 100 °F and calculate the following by
hand: What is the mean effective pressure (psi)? The correct answer
is 231.8 psi. Show every step and calculation with units
necessary.to...
A cold air-standard Otto cycle has a compression ratio of 6 and the temperature and pressure...
A cold air-standard Otto cycle has a compression ratio of 6 and
the temperature and pressure at the beginning of the compression
process are 520°R and 14.2 lbf/in.2, respectively. The heat
addition per unit mass of air is 500 Btu/lb. Assume constant
specific heats evaluted at 520°R. Determine:
(a) the maximum temperature, in °R.
(b) the maximum pressure, in lbf/in.2
(c) the percent thermal efficiency.
(d) the mean effective pressure, in lbf/in.2
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