A Practical Manual On Sea Water Distillation
With A Description Of The Necessary Machinery For The Process
Forfatter: Frank Normandy
År: 1909
Forlag: Charles Griffen & Co., LTD.
Sted: London
Sider: 244
UDK: 663.6
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THE EVAPORATOR.
75
In case (&) the secondary heat required is as follows :—
168 B.T.U. For heating feed (212- 100 x lj = 168).
966 „ Latent heat to evaporate 1 lb. of
water at atmospheric pressure.
1.134 „ Total heat required.
In case (c) the secondary heat required is as follows :—
130 B.T.U. To heat feed (187 - 100x 1|= 130),
984 ,, Latent heat to evaporate at-6 lbs.
(12" mercury).
1.135 ,, Total heat required.
2nd. Now take the primary heat available.
In case (a) the primary heat is as follows :—
888 B.T.U. The latent heat (at 75 lbs. pressure).
220 „ The sensible heat remaining
(320- 100 = 220).
1,108 ,, Total heat available.
In case (6) the primary heat is as follows :—
927 B.T.U. Latent heat (at 25 lbs. pressure).
166 ,, Sensible heat left (266 - 100 = 166).
1,093 „ Total heat available.
In case (c) the primary heat is as follows :—
946 B.T.U. Latent heat (at 10 lbs. pressure).
139 „ Sensible heat left (239 - 100 = 139).
1,085
Total heat available.