FUND OF ENGINEERING THERMO W/WILEY PLU
8th Edition
ISBN: 9781119391630
Author: MORAN
Publisher: WILEY
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Chapter 7.7, Problem 90P
(a)
To determine
The rate of heat transfer
The accompanying rate of exergy transfer
(b)
To determine
The total exergy supplied to the system.
The net exergy
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I need help answering parts a and b
Required information
Water initially at 200 kPa and 300°C is contained in a piston-cylinder device fitted with stops. The water is allowed to cool
at constant pressure until it exists as a saturated vapor and the piston rests on the stops. Then the water continues to cool
until the pressure is 100 kPa.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Water
200 kPa
300°C
On the T-V diagram, sketch, with respect to the saturation lines, the process curves passing through the initial, intermediate, and final states of the water. Label the
T, P, and V values for end states on the process curves.
Please upload your response/solution by using the controls provided below.
A piston-cylinder device contains 0.87 kg of refrigerant-134a at -10°C. The piston that is free to move has a mass of 12 kg
and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant-134a until the
temperature is 15°C. Use data from the tables.
R-134a
-10°C
Determine the change in the volume of the cylinder of the refrigerant-134a if the specific volume and enthalpy of R-134a at the initial
state of 90.4 kPa and -10°C and at the final state of 90.4 kPa and 15°C are as follows:
= 0.2418 m³/kg, h₁ = 247.77 kJ/kg
3
v2 = 0.2670 m³/kg, and h₂ = 268.18 kJ/kg
The change in the volume of the cylinder is
m
Chapter 7 Solutions
FUND OF ENGINEERING THERMO W/WILEY PLU
Ch. 7.7 - Prob. 1ECh. 7.7 - Prob. 2ECh. 7.7 - Prob. 3ECh. 7.7 - 4. A pail of water initially at 20°C freezes when...Ch. 7.7 - Prob. 5ECh. 7.7 - Prob. 6ECh. 7.7 - 7. After a vehicle receives an oil change and lube...Ch. 7.7 - Prob. 8ECh. 7.7 - Prob. 9ECh. 7.7 - Prob. 10E
Ch. 7.7 - 11. How does the concept of exergy destruction...Ch. 7.7 - 12. In terms of energy, how does the flight of a...Ch. 7.7 - Prob. 13ECh. 7.7 - Prob. 14ECh. 7.7 - Match the appropriate definition in the right...Ch. 7.7 - 6. Which of the following statements is false when...Ch. 7.7 -
7. Steam contained in a piston–cylinder assembly...Ch. 7.7 - Prob. 8CUCh. 7.7 - Prob. 9CUCh. 7.7 - Prob. 10CUCh. 7.7 - Prob. 11CUCh. 7.7 - Prob. 12CUCh. 7.7 - Prob. 13CUCh. 7.7 - Prob. 14CUCh. 7.7 -
15. Which of the following statements does not...Ch. 7.7 - Prob. 16CUCh. 7.7 - Prob. 17CUCh. 7.7 - Prob. 18CUCh. 7.7 - Prob. 19CUCh. 7.7 - Prob. 20CUCh. 7.7 - Prob. 21CUCh. 7.7 - Prob. 22CUCh. 7.7 - Prob. 23CUCh. 7.7 - Prob. 24CUCh. 7.7 - Prob. 25CUCh. 7.7 - Prob. 26CUCh. 7.7 - Prob. 27CUCh. 7.7 - Prob. 28CUCh. 7.7 - Prob. 29CUCh. 7.7 - Prob. 30CUCh. 7.7 - 31. Exergy transfer accompanying heat transfer is...Ch. 7.7 - Prob. 32CUCh. 7.7 -
33. The well-to-wheel efficiency compares...Ch. 7.7 - Prob. 34CUCh. 7.7 - Prob. 35CUCh. 7.7 - Prob. 36CUCh. 7.7 - Prob. 37CUCh. 7.7 - Prob. 38CUCh. 7.7 - Prob. 39CUCh. 7.7 - Prob. 40CUCh. 7.7 - Prob. 41CUCh. 7.7 - Prob. 42CUCh. 7.7 - Prob. 43CUCh. 7.7 - 44. When products of combustion are at a...Ch. 7.7 - Prob. 45CUCh. 7.7 - Prob. 46CUCh. 7.7 - Prob. 47CUCh. 7.7 - 48. Mass, volume, energy, entropy, and exergy are...Ch. 7.7 - 49. Exergy destruction is proportional to entropy...Ch. 7.7 - Prob. 50CUCh. 7.7 - Prob. 1PCh. 7.7 - Prob. 2PCh. 7.7 - Prob. 3PCh. 7.7 - Prob. 4PCh. 7.7 - Prob. 5PCh. 7.7 - Prob. 6PCh. 7.7 - Prob. 7PCh. 7.7 -
7.8 When matter flows across the boundary of a...Ch. 7.7 - Prob. 9PCh. 7.7 - Prob. 10PCh. 7.7 - 7.11 A system consists of 2 kg of water at 100°C...Ch. 7.7 -
7.12 A domestic water heater holds 189 L of water...Ch. 7.7 -
7.13 Determine the specific exergy of argon at...Ch. 7.7 - Prob. 14PCh. 7.7 - 7.15 A balloon filled with helium at 20°C, 1 bar...Ch. 7.7 - Prob. 19PCh. 7.7 - Prob. 20PCh. 7.7 - Prob. 21PCh. 7.7 - Prob. 22PCh. 7.7 - Prob. 23PCh. 7.7 - Prob. 24PCh. 7.7 - Prob. 25PCh. 7.7 - Prob. 26PCh. 7.7 - Prob. 27PCh. 7.7 - Prob. 28PCh. 7.7 - Prob. 29PCh. 7.7 - Prob. 30PCh. 7.7 - Prob. 31PCh. 7.7 - Prob. 32PCh. 7.7 - Prob. 33PCh. 7.7 - Prob. 34PCh. 7.7 - Prob. 35PCh. 7.7 - Prob. 36PCh. 7.7 - Prob. 37PCh. 7.7 - Prob. 38PCh. 7.7 - Prob. 39PCh. 7.7 - Prob. 40PCh. 7.7 - Prob. 41PCh. 7.7 - Prob. 42PCh. 7.7 - Prob. 43PCh. 7.7 - Prob. 44PCh. 7.7 - Prob. 45PCh. 7.7 - Prob. 47PCh. 7.7 - Prob. 48PCh. 7.7 - Prob. 49PCh. 7.7 - Prob. 50PCh. 7.7 - Prob. 51PCh. 7.7 -
7.52 Water at 24°C, 1 bar is drawn from a...Ch. 7.7 - Prob. 53PCh. 7.7 - Prob. 54PCh. 7.7 - Prob. 55PCh. 7.7 - Prob. 58PCh. 7.7 - Prob. 59PCh. 7.7 - Prob. 60PCh. 7.7 - 7.61. Steam enters a turbine operating at steady...Ch. 7.7 - Prob. 63PCh. 7.7 - Prob. 64PCh. 7.7 - Prob. 65PCh. 7.7 -
7.66 Air enters a turbine operating at steady...Ch. 7.7 - Prob. 67PCh. 7.7 - Prob. 69PCh. 7.7 - Prob. 74PCh. 7.7 - Prob. 75PCh. 7.7 - Prob. 76PCh. 7.7 - Prob. 77PCh. 7.7 - Prob. 78PCh. 7.7 - Prob. 79PCh. 7.7 -
7.80 Steady-state operating data are shown in...Ch. 7.7 - Prob. 81PCh. 7.7 - Prob. 82PCh. 7.7 - Prob. 83PCh. 7.7 - Prob. 84PCh. 7.7 - Prob. 85PCh. 7.7 -
7.86 A gas turbine operating at steady state is...Ch. 7.7 - Prob. 87PCh. 7.7 - Prob. 88PCh. 7.7 -
7.89 Figure P7.89 shows a gas turbine power plant...Ch. 7.7 - Prob. 90PCh. 7.7 - Prob. 91PCh. 7.7 - Prob. 92PCh. 7.7 - Prob. 93PCh. 7.7 - Prob. 94PCh. 7.7 - Prob. 95PCh. 7.7 - Prob. 96PCh. 7.7 - Prob. 97PCh. 7.7 - Prob. 98PCh. 7.7 - Prob. 99PCh. 7.7 - Prob. 100PCh. 7.7 - Prob. 101PCh. 7.7 - Prob. 102PCh. 7.7 - Prob. 103PCh. 7.7 - Prob. 104PCh. 7.7 - Prob. 105PCh. 7.7 - Prob. 106PCh. 7.7 - Prob. 107PCh. 7.7 - Prob. 108PCh. 7.7 - 7.109 Air enters the insulated duct shown in Fig....Ch. 7.7 - Prob. 110PCh. 7.7 - Prob. 111PCh. 7.7 - Prob. 112PCh. 7.7 - Prob. 113PCh. 7.7 - Prob. 114PCh. 7.7 - Prob. 115PCh. 7.7 - Prob. 118PCh. 7.7 - Prob. 120PCh. 7.7 - Prob. 121PCh. 7.7 - Prob. 122PCh. 7.7 - Prob. 123PCh. 7.7 - Prob. 124PCh. 7.7 - Prob. 125PCh. 7.7 - Prob. 126PCh. 7.7 - Prob. 127PCh. 7.7 - Prob. 128PCh. 7.7 - Prob. 129PCh. 7.7 - Prob. 130PCh. 7.7 - Prob. 131PCh. 7.7 - 7.132 Figure P7.132 shows a cogeneration system...Ch. 7.7 - Prob. 133PCh. 7.7 - Prob. 134PCh. 7.7 - Prob. 135PCh. 7.7 - Prob. 136PCh. 7.7 - Prob. 137PCh. 7.7 - Prob. 138PCh. 7.7 - Prob. 139PCh. 7.7 - Prob. 140PCh. 7.7 - Prob. 141PCh. 7.7 - Prob. 142P
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