Fundamentals of Momentum, Heat and Mass Transfer, 5th Edition
Welty et al
Errata – November, 2007
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Change to: P
Pg 98, Prob. 8.13, line 6
Presently reads:
Pg 144, Figure 12.5
Velocity profile isn’t accurate; v = 0 at the solid boundary
Pg 184, Prob. 13.20, line 3 Presently reads: ..water in the pipe..
Change to: ..water in the tank..
Pg 184, Prob. 13.25
The following sentences should be added following the table
of data:
Determine the total flow rate of 20 C water for the system.
Neglect minor losses.
Pg 210, Figure 15.5
Temperature profile isn’t accurate; the line from T3 to T4
should be straight.
Pg 223, Prob. 16.13
In the problem statement and in the diagram: change X to x.
Pg 243, Table 17.1
The figure representing Eccentric Circular Cylinders is in
error.
Pg 247, Prob. 17.12,
line 1
Presently reads: ..percent in heat flux..
Change to: ..percent increase in heat flux..
line 2
Presently reads: Problem 17.8
Change to: Problem 17.11
line 4
units should read Btu/h ft F
Pg 272, Prob. 18.17, line 1
Presently reads: …Problem 18.4..
Change to: …Problem 18.12..
Pg 296, Prob. 19.21 line 5
Presently reads:  = … Change to: v = …
Pg 296, Prob. 19.22 line 3
Presently reads:  = … Change to: v = …
Welty et al
5th Edition
Errata
page 2
Pg 321, Prob. 20.38, line 3 Change to: ..1/2-in. schedule 40 water line …
Pg 321, Prob. 20.43 line 13
Presently reads: v = … Change to: 
Pg 357, Prob. 22.8
line 2
Presently reads: Cc =… Change to: cpo = …
line 4
Presently reads: CH = … Change to: cpw = …
line 2
Presently reads: ..reaches 30 C instead of 38 C…
Change to: ..reaches 28 C instead of 30 C…
Pg 357, Prob. 22.9
Pg 357, Prob. 22.10 line 2
Presently reads: CC = … Change to: cpo = …
line 4
Presently reads: CH = … Change to: cpw = …
line 2
Presently reads: ..Problem 22.4...
Change to: ..Problem 22.3…
Pg 357, Prob. 22.13
Pg 359, Paragraph 4, line 3
Pg 406, Table 24.2 , line 8
Presently reads: ..by v = c, .. Change to: ..by  = c, ..
Presently reads: jA
Change to: JA
Pg 411, Example 2, line 3
Presently reads: …the values of s and e/k are obtained.
Change to: …the values of  and Aare obtained.
Pg 412, Example 2, line 7
Presently reads: D│T1 = 1.074 Change to: = 1.047
Page 413, Second line after example
Pg 430, Prob. 24.3, line 9
line 10
Prob. 24.7, line 6
Pg 430, Prob. 24.7,
Presently reads: …Hirschfelder equation () …
Change to: …Hirschfelder equation (24-33) …
Presently reads: g. mass density of air:
Change to: g. average molecular weight of the gas mixture
delete the entire line beginning with h.
Presently reads: ...(Az - Bz)… Change to: …(vAz – vBz)..
top of right-hand column: in the equation, (6 times)
Change all terms: Az to vAz, Bz to vBz, Cz to vCz,Oz to vDz
Welty et al
5th Edition
Errata
Page 3
Pg 431, Prob. 24.23, line 2
Presently reads: ..synthesistic.. Change to: ..synthesis..
Pg 437, line 21
Presently reads: …opposite direction to N; …
Change to: …opposite direction to NB; …
Pg 448, Prob. 25.2, line 1
Presently reads: Show that the (25-11)…
Change to: Show that equation (25-11)…
Pg 449, Prob. 25.9, last line
Presently reads: …Flicks relationship …
Change to:
…Fick’s relationship …
Prob. 25.11, lines 8 and 9
Delete – at end of line 8. Delete line 9 which reads:
Well-mixed feed gas (constant composition).
Pg 450, Prob. 25.16, line 3
Presently reads: …stagnant dead dead tissue …
Change to:
…stagnant dead tissue …
Pg 483, Figure caption
Presently reads: Figure 26.
Change to: Figure 26.14
Pg 494, Prob. 26.27.b, line 2
Presently reads: ..of the rod.
Change to: ..of the rod?
Pg 505, Example 2, line 5
Presently reads: …initial concentration CAo.
Change to:
…initial concentration cAo.
Pg 507, Table 27.1 heading
Presently reads: CAo = 8.9 mg/cm3.
Change to:
cAo = 8.9 mg/cm3.
Pg 511, Example 3.b, line 7
Presently reads: From the appendix Figure F.4 …
Change to: From Figure F.4 …
Pg 520, Example 2, line 8
line 10
Presently reads: v = 1.569 …. Change to:  = 1.569 …
Presently reads: Sc = v/DAB = Change to: Sc = /DAB =
Pg 531, Section 28.5, Expressions for WA3, WA4, and equation (28-28)
Change cA∞ to cA∞
(4 times)
Pg 532, equation (28-29)
Change cA∞ to cA∞
(4 times)
Welty et al
5th Edition
Pg 542, Example 6, line 8
Errata
page 4
Equation should read:
T∞ = [(TS MH2O)/( cp)](Pr/Sc)2/3[cH2O,s – cH2O,∞] + Ts
Pg 547, 28.14, line 13
Presently reads: vA = … , vB = … , vC = …
Change to: A = … , B = … , C = …
Pg 548, Prob. 28.19, line 4
Presently reads: x = …
Change to: vx = …
Pg 548, Prob. 28.19 (b), line 4 dashed line in expression should be a solid line
Pg 556, line 2,
close parenthesis sign following pA,i should be removed
Pg 564, Prob. 29.7 a.
Presently reads: , kL;
Change to: , kc;
Pg 564, Prob. 29.8, line 2
Presently reads: TCA/L
Change to: TCA/l
Pg 564, Prob. 29.8 c.
Presently reads: If kL …
Change to: If kc = …
Pg 566, Prob. 29.16 c.
Presently reads: …, pAL;
Change to: …, pA.i*;
Pg 566, Prob. 29.20, figure
Presently reads: 0= ? m3/hr
Pg 567, Prob. 29.22, line 3
Presently reads: KL is … Change to: KG is …
Pg 574, Example 1, line 4
Write units of the result: = 0.868 cm/s (on one line)
Pg 576, Example 2, line 20
Presently reads: … for 0 is correct.
Change to: …for v0 is correct.
Pg 599, Prob. 30.16, figure
Presently reads: ∞ = 50 cm/s
Pg 606, 6th line following example
Change to: v0 = ? m3/hr
Change to: v∞ = 50 cm/s
Presently reads: …small orificesin the ..
Change to:
…small orifices in the …
Pg 610, example 2, line 3
Presently reads: belowthe surface …
Change to:
below the surface …
Pg 611, section 31.3, line 8
Presently reads: Section 729.1. Change to: Section 29.1.
Welty et al
5th Edition
Errata
page 5
Pg 620, third line following equation (31-15) Presently reads: …puresolvent…
Change to:
…pure solvent…
Pg 624, equation (31-25)
Change Z = …. to z = ….
Pg 637, Prob. 31.1, line 2
Presently reads: … 7.08 x 10-3 m2/s.
Change to: … 7.08 x 10-3 m3/s.
Pg 640, Prob. 31.20, line 8
Presently reads: … 8.8 kg mol/m3∙s∙Pa.
Change to: … 8.8 x 10-8 kg mol/m3∙s∙Pa.
Pg 640, Prob. 31.20, table
Row headings are presently: XHCl and YHCl
Change to: xHCl and yHCl
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