A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 4 potx
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 4 potx
... The
geometrical mean beam length is defined as
L
0
≡
4 (volume of gas)
boundary area that is irradiated
(10. 54)
Thus, for two infinite parallel plates a distance apart, L
0
= 4A / 2A =
2. Some other values ... Solar radiation usually arrives at an angle
of less than 90
◦
to the surface because the sun is rarely directly overhead.
We have seen that a radiant heat flux arriving at an...
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 1 potx
... tubing. Additional values are given in [9 .47 ].
Fluid F Fluid F
Water 1.0 R-1 24 1.90
Propane 2.15 R-125 1.10
R-12 1.50 R- 13 4a 1. 63
R-22 2.20 R-15 2a 1.10
R -3 2 1.20 R -4 1 0a 1.72
so that
h
fb
h
lo
= ... flows ina5cmdiameter ver-
tical tube heated at a rate of 1 84, 000 W/m
2
. Find the wall temperature
at a point where the quality x is 20%.
Solution. Data for water are taken f...
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 2 potx
... boiling heat transfer to saturated
fluids in convective flow. ASME Prepr. 6 3- HT - 34 , 5th ASME-AIChE
Heat Transfer Conf. Boston, August 19 63.
[9 .45 ] S. G. Kandlikar. A general correlation for saturated ... Int. J. Heat Mass Transfer, 13: 142 5–1 43 9 ,
1970.
[9. 23] J. S. Ded and J. H. Lienhard. The peak pool boiling heat flux from
a sphere. AIChE J., 18(2) :33 7 34 2,...
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 1 Part 4 potx
... value is of approximately the same size as
h for natural convection
into a gas at such temperatures. Thus, the heat transfer by thermal radi-
ation and natural convection into gases are similar. ... differ
radically, the problem must be treated as two-dimensional.
84 Heat conduction, thermal resistance, and the overall heat transfer coefficient §2 .4
Table 2 .3 Some typical fouli...
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 3 doc
... Heat transfer among gray bodies 549
10 .4 Heat transfer among gray bodies
Electrical analogy for gray body heat exchange
An electric circuit analogy for heat exchange among diffuse gray bodies
was ... m
2
§10 .4 Heat transfer among gray bodies 5 53
Additional two-body exchange problems
Radiation shields. A radiation shield is a surface, usually of high re-
flectance, tha...
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 5 pot
... D
12
(m
2
/s)
air-carbon dioxide 276 1 .42 ×10
−5
air-ethanol 31 3 1 .45
air-helium 276 6. 24
air-napthalene 30 3 0.86
air-water 31 3 2.88
argon-helium 295 8 .3
628 32 .1
1068 81.0
(dilute solute, 1 )-( liquid solvent, 2) ... sur-
roundings are distant. What is the net radiant heat transfer
from the left-hand plate: to the right-hand side, and to the
surroundings?
10 .33 Two para...
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 6 docx
... 0.8610 0. 946 4
1.25 1.296 1 .42 4 4. 60 0.8568 0. 942 2
1 .30 1.2 73 1 .39 9 4. 70 0.8 530 0. 938 2
1 .35 1.2 53 1 .37 5 4. 80 0. 849 2 0. 9 34 3
1 .40 1. 233 1 .35 3 4. 90 0. 845 6 0. 930 5
1 .45 1.215 1 .33 3 5.00 0. 842 2 0.9269
1.50 ... NH
3
2.900 558 .31 7. 03
CO
2
3. 941 195. 244 .01 N
2
3. 798 71 .42 8.01
C
2
H
6
4. 4 43 215. 730 .07 N
2
O3.828 232 .44 4.01
C
2
H
5
OH 4....
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 7 doc
... the analogy between heat transfer and low-rate
mass transfer may be used directly to adapt natural convection heat
transfer predictions to natural convection mass transfer. As before, we
replace ... possi-
bilities in turn.
Heat transfer at low rates of mass transfer
One very common case of low-rate heat and mass transfer is the evapora-
tion of water into air at low or m...
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 8 pps
... tempera-
ture. We may evaluate h
∗
and g
∗
m,i
in the same way when heat and mass
transfer occur simultaneously. If composition variations are not large,
as in many low-rate problems, it may be adequate to ... when
more than one species is transferred?
§11.9 Simultaneous heat and mass transfer 667
Stagnant film model of heat transfer at high mass transfer rates
The multicomponent...
A HEAT TRANSFER TEXTBOOK - THIRD EDITION Episode 3 Part 9 pdf
... 1 .33 0.00 646 2
34 0 3. 080 24. 40 4 530 0. 033 9 11 .33 1.51 0.0080 53
360 4. 7 93 40 .19 5955 0. 040 8 12 .35 1.80 0.01121
38 0 7. 140 67 .37 939 5 0.0 546 14. 02 2 .42 0.01957
40 0 10 .30 131 .1 34 9 24 0.1 14 18. 53 5.70 ... 7,272 42 0 52 1.70
Steels (C ≤ 1.5%)
||
AISI 1010
††
7, 830 43 4 64 1.88 70 65 61 55 50 45 36 29
0.5% carbon 7, 833 46 5 54 1 .47 55 52 48 45...
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