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458

(1910) Author: Peder Lobben - Tema: Mechanical Engineering
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458 NOTES ON STEAM.
TABLE No. 83.—Constants for Calculating Mean and
Terminal Pressure of Expanding Steam.
.!2
Kept Dry at Tem-
V
At Constant Tem- perature of Satura- Condensin g by Work-
Cylinder.
^ £ perature. tion. ing in a
8 u (Isothermal Expan- (Expansion in a (Adiabatic Expan-
in W sion). Steam Jacketed Cy- sion).
a
o
4)
,3
rt
Ik
H ..
linder) .
M
3
03
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a §
3 ^
V
3
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o
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3 ^_^ k
V
3
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C s^
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in s—y
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^ 1
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3
1H* 4) ^—"^
3
8 2
V & H s H 3 H 3
% IX 0.750 0.966 0,737 0.964 0.726 0.962
7
/lO i% 0.700 0.950 0.685 0.947 0.673 0.944
% IX 0.667 0.937 0.650 0.933 0.638 0.930
% 1% 0.625 0.919 0.607 0.914 0.593 0.911
6
/l0 1% 0.600 , 0.906 0.581 0.900 0.567 0.897
% 2 0.500 0.846 0.479 0.839 0.463 0.833
Mo 2^ 0.400 0.766 0.378 0.756 0.361 0.748
% 2% 0.375 0.743 0.353 0.732 0.336 0.723
% 3 0.333 0.700 0.311 0.688 0.295 0.678
3
/l0 3X 0.300 0.662 0.278 0.648 0.262 0.637
X 4 0.250 0.596 0.229 0.582 0.214 0.571
y5 5 0.200 0.522 0.181 0.506 0.167 0.495
y6 6 0.1667 0.465 0.149 0.449 0.137 0.437
Vi 7 0.1428 0.421 0.127 0.405 0.115 0.393
% 8 0.125 0.385 0.110 0.369 0.0992 0.357
% 9 0.1111 0.355 0.0968 0.340 0.0862 0.327
Ho 10 0.1000 0.330 0.0865 0.315 0.0774 0.303
yn 11 0.0909 0.309 0.0782 0.293 0.0696 0.282
%2 12 0.0833 0.290 0.0713 0.275 0.0631 0.264
%3 13 0.0769 0.274 0.0655 0.259 0.0578 0.248
%4 14 0.0714 0.260 0.0605 0.245 0.0533 0.234
yi5 15 0.0667 0.247 0.0563 0.232 0.0494 0.222
%6 16 0.0625 0.236 0.0526 0.221 0.0459 0.211
%7 17 0.0588 0.225 0.0493 0.211 0.0429 0.201
%8 18 0.0556 0.216 0.0463 0.202 0.0403 0.192
%9 19 0.0526 0.208 0.0438 0.193 0.0379 0.184
y20 20 0.0500 0.20() 0.0415 0.185 0.0359 0.177

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