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FORM 160.55-O1 (604)
145
YORK INTERNATIONAL
8
*GAUGE ABSOLUTE
INCHES OF MERCURY (HG)
PSIA
MILLIMETERS OF
MICRONS
BELOW ONE STANDARD ATMOSPHERE MERCURY (HG)
0 14.696 760 760,000 212
10.24* 9.629 500 500,000 192
22.05* 3.865 200 200,000 151
25.98* 1.935 100 100,000 124
27.95* .968 50 50,000 101
28.94* .481 25 25,000 78
29.53* .192 10 10,000 52
29.67* .122 6.3 6,300 40
29.72* .099 5 5,000 35
WATER
29.842* .039 2 2,000 15
FREEZES
29.882* .019 1.0 1,000 +1
29.901* .010 .5 500 -11
29.917* .002 .1 100 -38
29.919* .001 .05 50 -50
29.9206* .0002 .01 10 -70
29.921* 0 0 0
* One standard atmosphere =14.696 PSIA NOTES: PSIG = Lbs. per sq. in. gauge pressure
= 760 mm Hg. absolute pressure at 32°F = Pressure above atmospheric
= 29.921 inches Hg. absolute at 32°F PSIA = Lbs. per sq. in. absolute pressure
= Sum of gauge plus at mo spher ic pressure
TABLE 3 – SYSTEM PRESSURES
FIG. 63 – EVACUATION OF CHILLER
LD00473
BOILING
TEMPERATURES
OF WATER °F