Machine Tool Practices (11th Edition)
11th Edition
ISBN: 9780134893501
Author: Richard R. Kibbe, Roland O. Meyer, Jon Stenerson, Kelly Curran
Publisher: PEARSON
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Chapter C.5, Problem 11ST
To determine
(a)
The readings of the micrometer given in the figure.
To determine
(b)
The readings of the micrometer given in the figure.
To determine
(c)
The readings of the micrometer given in the figure.
To determine
(d)
The readings of the micrometer given in the figure.
To determine
(e)
The readings of the micrometer given in the figure.
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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.
A single-pass crossflow heat exchanger is used to cool jacket water (cp = 1.0 Btu/lbm.°F) of a diesel engine from 190°F to 140°F, using
air (Cp = 0.245 Btu/lbm.°F) at inlet temperature of 90°F. Both air flow and water flow are unmixed. If the water and air mass flow rates
are 85500 lbm/h and 400,000 lbm/h, respectively, determine the log mean temperature difference for this heat exchanger. Assume
the correction factor F to be 0.92.
Air flow
(unmixed)
Water flow
(unmixed)
The log mean temperature difference of the heat exchanger is
°F.
Chapter C Solutions
Machine Tool Practices (11th Edition)
Ch. C.1 - Prob. 1STCh. C.1 - Prob. 2STCh. C.1 - Prob. 3STCh. C.1 - Prob. 4STCh. C.1 - Prob. 5STCh. C.1 - Prob. 6STCh. C.1 - Prob. 7STCh. C.1 - Prob. 8STCh. C.1 - Prob. 9STCh. C.1 - Prob. 10ST
Ch. C.2 - Prob. 1STCh. C.2 - Prob. 2STCh. C.2 - Prob. 3STCh. C.2 - Prob. 4STCh. C.2 - Prob. 5STCh. C.2 - Prob. 6STCh. C.2 - Prob. 7STCh. C.2 - Prob. 8STCh. C.2 - Prob. 9STCh. C.2 - Can an inch machine tool be converted to work in...Ch. C.3 - Prob. 1.1STCh. C.3 - Prob. 1.2STCh. C.3 - Prob. 1.3STCh. C.4 - Prob. 1.1STCh. C.4 - Prob. 1.2STCh. C.4 - Prob. 1.3STCh. C.5 - Prob. 1STCh. C.5 - Prob. 2STCh. C.5 - Prob. 3STCh. C.5 - Prob. 4STCh. C.5 - Prob. 5STCh. C.5 - Prob. 6STCh. C.5 - Prob. 7STCh. C.5 - Prob. 8STCh. C.5 - Prob. 9STCh. C.5 - Prob. 10STCh. C.5 - Prob. 11STCh. C.5 - Prob. 1.1STCh. C.5 - Prob. 1.2STCh. C.5 - Prob. 2.1STCh. C.5 - Prob. 3.1STCh. C.5 - Prob. 4.1STCh. C.6 - What is comparison measurement?Ch. C.6 - Define cosine error.Ch. C.6 - Prob. 3STCh. C.6 - Prob. 4STCh. C.6 - Prob. 5STCh. C.6 - Prob. 6STCh. C.6 - Prob. 7STCh. C.6 - Prob. 8STCh. C.7 - What is a wringing interval?Ch. C.7 - Why are wear blocks frequently used in combination...Ch. C.7 - As related to gage block use, what is meant by the...Ch. C.7 - Prob. 4STCh. C.7 - What is a conditioning stone and how is it used?Ch. C.7 - Prob. 6STCh. C.7 - Prob. 7STCh. C.7 - Prob. 8STCh. C.7 - Prob. 9STCh. C.7 - Prob. 10STCh. C.8 - Name two angular measuring instruments with one...Ch. C.8 - What is the discrimination of the universal bevel...Ch. C.8 - Describe the use of the sine bar.Ch. C.8 - Prob. 4STCh. C.8 - Calculate the required sine bar elevation for an...Ch. C.8 - A 10-inch sine bar is elevated 2.750 inch....Ch. C.8 - How do 10-inch and 5-inch sine bars affect the...Ch. C.8 - What gage block stack would establish an angle of...Ch. C.8 - What gage block stack would establish an angle of...Ch. C.8 - A 10-inch bar is elevated 2.5 inch. What angle is...Ch. C.9 - Prob. 1STCh. C.9 - Prob. 2STCh. C.9 - Prob. 3STCh. C.9 - Prob. 4STCh. C.9 - Prob. 5STCh. C.9 - Prob. 6STCh. C.9 - Prob. 7STCh. C.9 - Prob. 8STCh. C.9 - Prob. 9STCh. C.9 - Prob. 10STCh. C.9 - Prob. 11STCh. C.9 - Prob. 12STCh. C.9 - Prob. 13STCh. C.9 - Prob. 14STCh. C.9 - Prob. 15STCh. C.9 - Prob. 16STCh. C.9 - Prob. 17STCh. C.9 - Prob. 18STCh. C.9 - Prob. 19STCh. C.9 - Prob. 20STCh. C.9 - Prob. 21STCh. C.9 - Prob. 22STCh. C.9 - Prob. 23STCh. C.9 - Prob. 24STCh. C.9 - Prob. 25STCh. C.9 - Prob. 26STCh. C.9 - Prob. 27STCh. C.9 - Prob. 28STCh. C.9 - Prob. 29STCh. C.9 - Prob. 30STCh. C.9 - Prob. 31STCh. C.9 - Prob. 32STCh. C.9 - Prob. 33STCh. C.9 - Prob. 34STCh. C.10 - Prob. 1STCh. C.10 - Prob. 2STCh. C.10 - Prob. 3STCh. C.10 - Prob. 4STCh. C.10 - Prob. 5STCh. C.10 - Prob. 6STCh. C.10 - Prob. 7STCh. C.10 - Prob. 8STCh. C.10 - Prob. 9ST
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