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Get Full Access to Introduction To Heat Transfer - 6 Edition - Chapter 8 - Problem 8.6
Get Full Access to Introduction To Heat Transfer - 6 Edition - Chapter 8 - Problem 8.6

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# Consider pressurized water, engine oil (unused), and NaK

ISBN: 9780470501962 111

## Solution for problem 8.6 Chapter 8

Introduction to Heat Transfer | 6th Edition

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Problem 8.6

Consider pressurized water, engine oil (unused), and NaK (22%/78%) flowing in a 20-mm-diameter tube. (a) Determine the mean velocity, the hydrodynamic entry length, and the thermal entry length for each of the fluids when the fluid temperature is 366 K and the flow rate is 0.01 kg/s. (b) Determine the mass flow rate, the hydrodynamic entry length, and the thermal entry length for water and engine oil at 300 and 400 K and a mean velocity of 0.02 m/s.

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Lecture 6: Dimensions and Units Outcomes  Explain the difference between units and dimensions  List the base (fundamental) dimensions in the SI system  Identify derived dimensions and units  Perform dimensional homogeneity checks on equations  Explain the concept and use of dimensionless numbers  Use common prefixes and prefix symbols o Table 2.6 on page 28 in text Dimensions vs units  Dimensions o Used to describe or specify the nature of physical quantities o There are base and derived dimensions o Dimensions are independent of units o Examples: length, mass, force, velocity, voltage  Units o Standard measure of the magnitude of a dimension with a predet

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