(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "The Flow Of Gases In Furnaces"

156

APPENDIX I

value of H.    It is evident that the following expression will then
be obtained:

i *

ii

1

from which, according to Eq. (2),

'H-h-

h

from which
and

2VH-h

= 0,

.   (3)

-    (4)

In taking into account this last relationship, Eq. (2) will take
the form

^-A,

and

The actual quantity of gas Q flowing under the inverted weir
will be less than the theoretical volume by reason of the frictional
and other resistance; therefore these equations will become:

<2=?\5

2gH

A,-A,

-\3

2gh^

-A,,

(5)

(6)

in which the coefficients p, and  may not be equal, as, in passing
from equations (3) and (4) to the actual flow of the gas, it will be
found that the relation between H and h is different from that
given in these equations.

According to the researches of Bazin, the coefficient M for the
flow of water is given by the formula

,     (7)

|^|M= [0.70+0. 185|] [0.

in which p is the depth of the channel and E& must not be less
than |ff .
 E being the distance DD (Fig. 25).