York YHAU-CGN, Installation Operation & Maintenance

Page: 156 / 182

SECTION 7 – MAINTENANCE FORM 155.32-ICOM2.EN.UL
ISSUE DATE:1/10/2018
156 JOHNSON CONTROLS
Figure 73 - Duhring Diagram / PTX Chart (°F)
SA
TURA
TION PRESSURE mm Hg
REFRIGERANT
TEMPERA
TURE F
20
15 10
8 6
4.
2
100
90
80
70
60
50
40
30
995.
5
900
800
700
600
500
400
300
200
150
SOLUTION TEMPERATURE
F
70
80
60 50 40 30
404
0
505
0
606
0
707
0
808
0
909
0
100 1001
0
0
1101
1
0
1201
2
0
1301
3
0
1401
4
0
1501
5
0
1601
6
0
1701
7
0
1801
8
0
1901
9
0
2002
0
0
2102
1
0
2202
2
0
2302
3
0
2402
4
0
2502
5
0
2602
6
0
2702
7
0
2802
8
0
2902
9
0
3003
0
0
3103
1
0
3203
2
0
3303
3
0
3403
4
0
3503
5
0 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 220 210
90
100
110
120
130
140
150
160
170
180
190
200
210
220
CRYSTALLIZATION AREA
65
%
60%
55
%
50%
45%
40%
40%
45%
50%
55%
60%
65%
7 0
%
200 2002
0
0
210 2102
1
0
220 2202
2
0
230 2302
3
0
240 2402
4
0
250 2502
5
0
260 2602
6
0
270 2702
7
0
280 2802
8
0
290 2902
9
0
300 3003
0
0
310 3103
1
0
320 3203
2
0
330 3303
3
0
340 3403
4
0
350 3503
5
0
Dühring Diagram / PTX Chart
Absorption Liquid Chillers
Useful Conversion Formulas T
o
Convert ºC (Centigrade) to ºF (Fahrenheit) or ºF to ºC:
ºC =
ºF +40
1.8
-
40
ºF = (ºC + 40) x 1.8 - 40
1 atm (atmosphere at sea level) = 14.696 psia = 0 psig = 760 mmHG = 29.92 in Hg 1 mm Hg = 1000 microns = 0.3937 inch Hg = .01934 psi 1 in Hg = 25.4 mm Hg = .491 psi 1 psi = 2.036 in Hg = 51.7 mm Hg = 2.31 ft H
2
O
1 ft H
2
O = .433 psi
1 lb = .4536 Kg = 453.6 gms 1 liter = .2641 U.S. gal = 1.057 U.S. quarts 1 U.S. gallon = 3.785 liters 1 inch = 25.4 mm 1 ton refrigeration (12,000 btu/hr) = 3.52 kW