Jökull - 01.12.1966, Blaðsíða 34

>|Q»
a --[('i/^7sK^/éz-3)r
*>(%)[■“ (*ffý
wneee /* fíND ^ fía£ //V ism /ft 3
V = SO/2FSC£ TSMS/OrV, OY//S /CM
/cc : c/Qu/o v/scostry cp,
.- vapoue Fcou/ fíSTE r 18m/ft2.hR'
L ? í/QUtO fcOiO /?fíT£ íBM/fT? fífí.
On the assumption that no slip occurs, the
variation of dryness fraction, x, with critical
pressure, pc, can be obtained by solving the
equation:
, , , G2x22V22
hol — hf2 + x2hfg2 + q "T (2)
2g„J
where hol and G are known from experimental
measurements, and exit fluid properties corre-
spond to the static pressure pc. The results are
shown in Fig. 4.
than ± 3% by the following empirical equa-
tion:
Gh1102
p ,0-96
1,400
(1)
(ii) Method due to Isbin, Moy and Cruz (1951)
The correlation given in equation (1) was
suggested by and is similar to those used earlier
in a laboratory context by Isbin, Moy and Cruz,
namely
188 JÖKULL