Review of: Convection Heat Transfer Coefficient Estimation
I thought this is a very concise course, which provides some easy to understand and useful information on commonly encountered convective heat transfer problems.
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Review of: Convection Heat Transfer Coefficient Estimation
Kevin Utley
09/01/2022
Verified Buyer
Very informative course.
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Review of: Convection Heat Transfer Coefficient Estimation
Lon
05/22/2022
Verified Buyer
Really helped me to solidify my understanding of heat transfer calculations for both natural and forced convection. The spreadsheet calculations is an extra bonus.
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119-Convection Heat Transfer Coefficient Estimation
Bruce Nicholson
11/12/2020
Verified Buyer
This was a good review. It had been quite some time since I have worked in the field so I had to study the material and as a result will go back to some of my heat transfer texts to do a further review. I noted some typo's in the document:
1 the units for the coefficient of expansion are typed as R and K but should be inverse R and inverse K on pg 7.
2. It would have been useful to include the conversion (with units) between slugs and lb).
3. on pg 14, you calculated NUo = 225, but then in NUd you used 236 instead of 225 so the answere should have been 234 not 245.
4. pg 24, in the equation for A the second half of the term is missing a decimal point and should be 0.664 not 0664. Just a typo.
5. pg 32: Example #10: You calculated a Prandtl number of 0.70, but at the bottom of the page you showed Pr = 0.76, clearly a miss type.
This was an excellent course review.
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119-Convection Heat Transfer Coefficient Estimation
Michael Johnson
09/19/2020
Verified Buyer
Very detailed and in depth presentation. Excellent examples to help clarify the calculations.
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119-Convection Heat Transfer Coefficient Estimation
John Beach
07/26/2020
Verified Buyer
This was a very useful summary of heat transfer coefficients. I may refer to it, rather than a textbook, when I need to find a proper coefficient in the future
1 of 1 customers found this helpful.
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Real world topic
Dale Labitzke
05/04/2020
Verified Buyer
Actually had to work to finish this one.
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119-Convection Heat Transfer Coefficient Estimation
Erwin Everett
03/29/2020
Verified Buyer
I found the information presented was difficult to understand. The formulas were not well explained and difficult to use.
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119-Convection Heat Transfer Coefficient Estimation
Bill W White, PE
01/21/2020
Verified Buyer
Very comprehensive, straight forward presentation.
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119-Convection Heat Transfer Coefficient Estimation
Joseph Stine
01/14/2020
Verified Buyer
A great course with new information for an old timer. Explained much better than a text book.
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119-Convection Heat Transfer Coefficient Estimation
David Schooley
12/04/2019
Verified Buyer
Don't touch this course unless you have an intimate understanding of the material presented in the course and are very familiar with the topic.
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119-Convection Heat Transfer Coefficient Estimation
Greg Miller
12/02/2019
Verified Buyer
Material well presented. I had trouble with some of the units selected as I was not familiar with them.
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119-Convection Heat Transfer Coefficient Estimation
David Gaiewski
04/10/2019
Verified Buyer
Equations presented in a usable format.
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119-Convection Heat Transfer Coefficient Estimation
John S McSpadden
11/24/2018
Verified Buyer
Good in depth course on heat transfer. Theoretical with pragmatic equations easily applied.
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119-Convection Heat Transfer Coefficient Estimation
Gordon Bigham
06/27/2017
Verified Buyer
The written course material and references are very good, simple and easy to understand. Several of the example calculations are incorrect however, and should be corrected.
Based on your comments, the author has proof read and edited the course document. Thank you for your observations.
1 of 1 customers found this helpful.
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119-Convection Heat Transfer Coefficient Estimation
John Roberts
03/13/2017
Verified Buyer
Well done and easy to follow.
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119-Convection Heat Transfer Coefficient Estimation
Martin Savrick
12/07/2016
Verified Buyer
Generally good material and presentation
Noted several issues:
Use of "slugs" not generally used in either US or SI systems.Would lose dimensional consistency if viscosity units in feet although values same in both viscosity units
Example 6 on P.23 divides length in feet by 12. The use of 12 should only be if cylinder diameter was expressed in inches
Use of the term "characteristic length not fully defined for turbulent flow - as used in test question 12 this "length" is a an equivalent diameter
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119-Convection Heat Transfer Coefficient Estimation
Daniel Nord
11/28/2016
Verified Buyer
Good overview and practical!
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119-Convection Heat Transfer Coefficient Estimation
Robert Trifunovic
10/22/2016
Verified Buyer
Excellent course
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119 - Convection Heat Transfer Coefficient Estimation
Robert J. Willems
04/25/2016
This was an excellent course and very well written. I will definitely use this course as a reference for any future heat transfer calculations.
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119-Convection Heat Transfer Coefficient Estimation
Good presentation of the material. Very comprehensive covering. More educational value than many online pdh providers.
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Convection Heat Transfer Coefficent Estimatin
A good base course for someone who does very little of these types of calculations during the regular course of work.
I re-learned a lot of information from my educational years and it was a great help.
The spread sheet was very well set up but could have had a little more interaction between the course problem examples and the spread sheet.
1 of 1 customers found this helpful.
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Good refresher course
This is a good refresher course for convection heat transfer. Forced and natural convection through and over pipes, plates, and spheres are discussed. An excel download is available for these examples
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(no title provided)
This course was very comprehensive and very clearly presented.
For section 10 on non-circular ducts, I wonder if Dr. Bengtson had considered the section "Fluids Flowing in Annuli" in Kern's book "Process Heat Transfer". Kern states that the equivalent diameter for heat transfer should be (D2 squared - D1 squared) /D1 because the outer perimeter of the larger pipe is not involved directly with heat transfer; Kern states that the equivalent diameter is (D2 - D1) for frictional pressure drop calculations. In Dr. Bengtson's example #5, using Kern's suggestion gives: DH = 2.33, Re = 29,705, f = 0.0237, NUo = 193.9, NUD = 201.43 and h = 342.35. For design, using Kern's DH is more conservative.
Note also that in the solution to example #5, the spreadsheet results for heating show that NUo per correlation #3 = 95, NUD = 99 and h = 390 rather than the results presented in the course.
Overall, this is a very worthwhile and very well written course!
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(no title provided)
Very good in all ways...well presented and coordinated with the excel sheet. A very good summary and reference.
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(no title provided)
Arthur R DiNicolantonio
12/14/2014
Easy to read and understand. The spread sheet is not very useful outside this course as it should include a spread sheet for properties of fluids other than water.
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(no title provided)
very thorough and required significant amount of reference to course material. Also the inclusion of the excel worksheet was a great idea!
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(no title provided)
A good review of the most commonly used formulas for the occasional foray into heat transfer problems
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(no title provided)
This was a very good refresher course.
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Review of Heat Transfer
Course provides a good review of Heat Transfer. The spread sheet is a nice adder
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Well written, Useful
Extremely clear writing and logical flow. The test didn't insult me but also wasn't complicated. Useful summary of multiple correlations -- the material is a helpful refresher for the occasional heat transfer calc I have to do.
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