172-65043MA-02 (GP10L/GT10L
PowerTrap
) 9 Mar 2004
14
Size of the Condensate Receiver / Reservoir Pipe
When selecting the receiver/reservoir pipe for the
PowerTrap
, select from among the following 3 conditions:
#
When large quantities of flash steam are involved
(For open systems using steam)
a) Determining the amount of flash steam:
Amount of flash steam Fs = Qd
×
(hd’
−
hh’) / r
Fs : amount of flash steam (kg/h) (lb/h)
Qd : amount of condensate (kg/h) (lb/h)
hd’ : specific enthalpy (J/kg) (Btu/lb) of saturated condensate at
condensate inlet set pressure (P
1
)
hh’ : specific enthalpy (J/kg) (Btu/lb) of saturated condensate at
condensate receiver set pressure (P
2
)
r : specific enthalpy (J/kg) (Btu/lb) vaporization (latent heat of
steam) at condensate receiver set pressure (P
2
)
b) Determining the condensate receiver diameter and vent pipe diameter according
to the amount of flash steam:
In the following table, the receiver length is 1 m (3.5 ft).
Vented Receiver Table
(For atmospheric, open system installations)
Flash Steam
up to ~
kg/hour
Receiver
Diameter
mm (in)
Vent Line
Diameter
mm (in)
Flash Steam
up to ~
lb/hour
Receiver
Diameter
(in)
Vent Line
Diameter
(in)
25 80
(3)
25
(1) 50
3
1
50 100
(4)
50
(2) 75
4
1½
75 125
(5)
50
(2) 100
4
2
100 150
(6)
80
(3) 200
6
2½
150 200
(6)
80
(3) 300
8
3
200 200
(8)
100
(4) 400
8
4
300 250
(10)
125
(5) 600
10
4
400 300
(12)
125
(5) 800
12
6
500 350
(14)
150
(6) 1000
14
6
700 400
(16)
200
(8) 1400
16
8
800 450
(18)
200
(8) 1600
18
8
1000 500
(20)
200
(8) 2000
20
8
1100 500
(20)
250
(10) 2200
20
10
1400 550
(22)
250
(10) 2800
22
10
1500 600
(24)
250
(10) 3000
24
10
Condensate
Receiver
P
1
P
2
Flash Steam
Condensate
Содержание PowerTrap GP10L
Страница 36: ......
