Sinclair GSH-60IRA series Operational Manual page 27

9.8 Selection of expansion vessel
Formula:
v
--- Volume of expansion vessel
c
--- Total water volume
p
--- Pre-set pressure of expansion vessel
1
p
-- The highest pressure during running of the system (that is the action pressure of
2
safety valve.)
e
--- The expansion factor of water (the difference between the expansion factor of the
original water temperature and that of highest water temperature.)
Temperature（℃）
10
20
30
40
45
50
55
60
65
70
75
80
85
90
95
100
Water expansion factor in different temperature
0
4
AIR-TO-WATER HEAT PUMP INSTALLATION MANUAL
⋅
c e
v=
+
p
1
−
1 1
+
p
1
2
0.00013
0.00027
0.00177
0.00435
0.00782
0.0099
0.0121
0.0145
0.0171
0.0198
0.0227
0.0258
0.029
0.0324
0.0359
0.0396
0.0434
25
e
Expansion factor
0