FUND OF ENGINEERING THERMO W/WILEY PLU
8th Edition
ISBN: 9781119391630
Author: MORAN
Publisher: WILEY
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Chapter 8.6, Problem 8CU
To determine
The suitable term for the blank in the sentence “the component of the Rankine cycle that produces shaft power is the _____”.
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Required information
A one-shell-pass and eight-tube-passes heat exchanger is used to heat glycerin (cp=0.60 Btu/lbm.°F) from 80°F to 140°F
by hot water (Cp = 1.0 Btu/lbm-°F) that enters the thin-walled 0.5-in-diameter tubes at 175°F and leaves at 120°F. The total
length of the tubes in the heat exchanger is 400 ft. The convection heat transfer coefficient is 4 Btu/h-ft²°F on the glycerin
(shell) side and 70 Btu/h-ft²°F on the water (tube) side.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Determine the rate of heat transfer in the heat exchanger before any fouling occurs.
Correction factor F
1.0
10
0.9
0.8
R=4.0 3.0 2.0.15 1.0 0.8.0.6 0.4 0.2
0.7
0.6
R=
T1-T2
12-11
0.5
12-11
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
(a) One-shell pass and 2, 4, 6, etc. (any multiple of 2), tube passes
P=
T₁-11
The rate of heat transfer in the heat exchanger is
Btu/h.
!
Required information
Air at 25°C (cp=1006 J/kg.K) is to be heated to 58°C by hot oil at 80°C (cp = 2150 J/kg.K) in a cross-flow heat exchanger
with air mixed and oil unmixed. The product of heat transfer surface area and the overall heat transfer coefficient is 750
W/K and the mass flow rate of air is twice that of oil.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Air
Oil
80°C
Determine the effectiveness of the heat exchanger.
In an industrial facility, a counter-flow double-pipe heat exchanger uses superheated steam at a temperature of 155°C to
heat feed water at 30°C. The superheated steam experiences a temperature drop of 70°C as it exits the heat exchanger.
The water to be heated flows through the heat exchanger tube of negligible thickness at a constant rate of 3.47 kg/s. The
convective heat transfer coefficient on the superheated steam and water side is 850 W/m²K and 1250 W/m²K,
respectively. To account for the fouling due to chemical impurities that might be present in the feed water, assume
a fouling factor of 0.00015 m²-K/W for the water side.
The specific heat of water is determined at an average temperature of (30 +70)°C/2 = 50°C and is taken to be
J/kg.K.
Cp=
4181
Water
Steam
What would be the required heat exchanger area in case of parallel-flow arrangement?
The required heat exchanger area in case of parallel-flow arrangement is
1m².
Chapter 8 Solutions
FUND OF ENGINEERING THERMO W/WILEY PLU
Ch. 8.6 - Prob. 1ECh. 8.6 - Prob. 2ECh. 8.6 - Prob. 3ECh. 8.6 - Prob. 4ECh. 8.6 - Prob. 5ECh. 8.6 - Prob. 6ECh. 8.6 - Prob. 7ECh. 8.6 - 8. What is the relationship between global climate...Ch. 8.6 - Prob. 9ECh. 8.6 - Prob. 10E
Ch. 8.6 - Prob. 11ECh. 8.6 - Prob. 12ECh. 8.6 - Prob. 13ECh. 8.6 - Prob. 1CUCh. 8.6 - Prob. 2CUCh. 8.6 - 3. The component of the Rankine cycle in which the...Ch. 8.6 - 4. A cycle that couples two vapor cycles so the...Ch. 8.6 - 5. The ratio of the pump work input to the work...Ch. 8.6 - 6. A shell-and-tube-type recuperator in which the...Ch. 8.6 - Prob. 7CUCh. 8.6 - Prob. 8CUCh. 8.6 - Prob. 9CUCh. 8.6 - Prob. 10CUCh. 8.6 - 11. An example of an external irreversibility...Ch. 8.6 - Prob. 12CUCh. 8.6 - Prob. 13CUCh. 8.6 - Prob. 14CUCh. 8.6 - 15. A direct-contact–type heat exchanger found in...Ch. 8.6 - 16. The component of a regenerative vapor power...Ch. 8.6 - Prob. 17CUCh. 8.6 - 18. A Rankine cycle that employs an organic...Ch. 8.6 - Prob. 19CUCh. 8.6 - Prob. 20CUCh. 8.6 - Prob. 21CUCh. 8.6 - Prob. 22CUCh. 8.6 - Prob. 23CUCh. 8.6 - 24. The purpose of deaeration is ______________.
Ch. 8.6 - Prob. 25CUCh. 8.6 - Prob. 26CUCh. 8.6 - Prob. 27CUCh. 8.6 - Prob. 28CUCh. 8.6 - 29. The total cost associated with a power plant...Ch. 8.6 - Prob. 30CUCh. 8.6 - Prob. 31CUCh. 8.6 - Prob. 32CUCh. 8.6 - Prob. 33CUCh. 8.6 - Prob. 34CUCh. 8.6 - Prob. 35CUCh. 8.6 - Prob. 36CUCh. 8.6 - Prob. 37CUCh. 8.6 - Prob. 38CUCh. 8.6 - Prob. 39CUCh. 8.6 - 40. For a vapor power cycle with and , the...Ch. 8.6 - Prob. 41CUCh. 8.6 - Prob. 42CUCh. 8.6 - Prob. 43CUCh. 8.6 - Prob. 44CUCh. 8.6 - Prob. 45CUCh. 8.6 - Prob. 46CUCh. 8.6 - Prob. 47CUCh. 8.6 - Prob. 48CUCh. 8.6 - Prob. 49CUCh. 8.6 - 50. In a binary cycle, energy discharged by heat...Ch. 8.6 - Prob. 1PCh. 8.6 - Prob. 2PCh. 8.6 - Prob. 3PCh. 8.6 - Prob. 6PCh. 8.6 - 8.7 Water is the working fluid in an ideal Rankine...Ch. 8.6 - Prob. 8PCh. 8.6 - 8.10 Water is the working fluid in an ideal...Ch. 8.6 - Prob. 12PCh. 8.6 - Prob. 13PCh. 8.6 - 8.14 On the south coast of the island of Hawaii,...Ch. 8.6 - Prob. 15PCh. 8.6 - 8.17. Water is the working fluid in a Rankine...Ch. 8.6 - 8.19 Water is the working fluid in a Rankine...Ch. 8.6 - Prob. 20PCh. 8.6 - Prob. 21PCh. 8.6 - 8.22 Superheated steam at 8 MPa and 480°C leaves...Ch. 8.6 - Prob. 23PCh. 8.6 - Prob. 25PCh. 8.6 - Prob. 26PCh. 8.6 - 8.27 Steam is the working fluid in the ideal...Ch. 8.6 - Prob. 28PCh. 8.6 - Prob. 29PCh. 8.6 - Prob. 30PCh. 8.6 - Prob. 31PCh. 8.6 - 8.32 An ideal Rankine cycle with reheat uses water...Ch. 8.6 - Prob. 33PCh. 8.6 - 8.34 Steam at 4800 lbf/in.2, 1000℉ enters the...Ch. 8.6 - Prob. 35PCh. 8.6 - Prob. 37PCh. 8.6 - 8.38 For the cycle of Problem 8.37, reconsider the...Ch. 8.6 - Prob. 39PCh. 8.6 - Prob. 40PCh. 8.6 - Prob. 41PCh. 8.6 - Prob. 42PCh. 8.6 - Prob. 43PCh. 8.6 - Prob. 44PCh. 8.6 - Prob. 45PCh. 8.6 - Prob. 46PCh. 8.6 - Prob. 47PCh. 8.6 - 8.48 For the cycle of Problem 8.47, investigate...Ch. 8.6 - Prob. 49PCh. 8.6 - Prob. 50PCh. 8.6 - Prob. 51PCh. 8.6 - 8.52 As indicated in Fig. P8.52, a power plant...Ch. 8.6 - Prob. 53PCh. 8.6 - Prob. 54PCh. 8.6 - Prob. 55PCh. 8.6 - Prob. 56PCh. 8.6 - Prob. 57PCh. 8.6 - Prob. 58PCh. 8.6 - Prob. 59PCh. 8.6 - Prob. 60PCh. 8.6 - Prob. 61PCh. 8.6 - Prob. 63PCh. 8.6 - Prob. 64PCh. 8.6 - Prob. 65PCh. 8.6 - Prob. 66PCh. 8.6 - 8.67 Water is the working fluid in a Rankine cycle...Ch. 8.6 - Prob. 68PCh. 8.6 - Prob. 69PCh. 8.6 - Prob. 70PCh. 8.6 - 8.72 Water is the working fluid in a...Ch. 8.6 - Prob. 73PCh. 8.6 - Prob. 74PCh. 8.6 - Prob. 75PCh. 8.6 - 8.76 A binary vapor power cycle consists of two...Ch. 8.6 - A binary vapor cycle consists of two Rankine...Ch. 8.6 - Prob. 78PCh. 8.6 - Prob. 79PCh. 8.6 - Prob. 80PCh. 8.6 - 8.81 Figure P8.81 shows a combined heat and power...Ch. 8.6 - 8.82 Figure P8.82 shows a cogeneration cycle that...Ch. 8.6 - Prob. 83PCh. 8.6 - 8.84 The steam generator of a vapor power plant...Ch. 8.6 - 8.85 Determine the exergy input, in kJ per kg of...Ch. 8.6 - 8.86 In the steam generator of the cycle of...Ch. 8.6 - Prob. 87PCh. 8.6 - 8.88 Determine the rate of exergy input, in Btu/h,...Ch. 8.6 - Prob. 89PCh. 8.6 - Prob. 90PCh. 8.6 - Prob. 91PCh. 8.6 - 8.92 Figure P8.92 provides steady-state operating...Ch. 8.6 - 8.93 Steam enters the turbine of a simple vapor...
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