Publicidad
Idiomas disponibles
Idiomas disponibles
3. PLUMBING DIAGRAMS
3.1 Open collector
The open collector prevent mutual disturbance between pumps that work
on different circuits.
Besides varying the differential pressure of the system, it can also vary the
temperatures, because substantial mixing may take place in it.
The following cases may occur:
Open collector examples of calculation:
G
= G
1
2
Secondary/primary circuit power (Kcal/h)
Flow rate of secondary circuit (l/h)
Primary circuit delivery temperature (°C)
Primary circuit flow rate (l/h)
Dt primary circuit (°C)
Primary circuit return temperature (°C)
Secondary circuit delivery temperature (°C)
Secondary circuit return temperature (°C)
Dt secondary circuit (°C)
Flow rate through open collector (l/h)
Temperature in open collector (°C)
G
> G
1
2
Secondary/primary circuit power (Kcal/h)
Flow rate of secondary circuit (l/h)
Primary circuit delivery temperature (°C)
Primary circuit flow rate (l/h)
Dt primary circuit (°C)
Primary circuit return temperature (°C)
Secondary circuit delivery temperature (°C)
Secondary circuit return temperature (°C)
Dt secondary circuit (°C)
Flow rate through open collector (l/h)
Temperature in open collector (°C)
G
< G
1
2
Secondary/primary circuit power (Kcal/h)
Flow rate of secondary circuit (l/h)
Primary circuit delivery temperature (°C)
Primary circuit flow rate (l/h)
Dt primary circuit (°C)
Primary circuit return temperature (°C)
Secondary circuit delivery temperature (°C)
Secondary circuit return temperature (°C)
Dt secondary circuit (°C)
Flow rate through open collector (l/h)
Temperature in open collector (°C)
28
- primary flow rate (G
- primary flow rate (G
- primary flow rate (G
In all cases, the design temperature based upon which the terminals of the
system are sized is the secondary delivery temperature.
30.000
1.500
75.0
1.500
20.0
55.0
75.0
55.0
20.0
0
55.0
30.000
1.500
75.0
2.500
12.0
63.0
75.0
55.0
20.0
1.000
75.0
30.000
2.500
75.0
1.500
20.0
55.0
67.0
55.0
12.0
- 1.000
55.0
) equal to secondary flow rate (G
1
) less than secondary flow rate (G
1
) greater than secondary flow rate (G
1
t (°C)
G (l/h)
75.0
1.500
Primary
Dt (°C)
20.0
G (l/h)
0
t (°C)
55.0
t (°C)
G (l/h)
55.0
1.500
t (°C)
G (l/h)
75.0
2.500
Primary
Dt (°C)
12.0
G (l/h)
1.000
t (°C)
75.0
t (°C)
G (l/h)
63,0
2.500
t (°C)
G (l/h)
75.0
1.500
Primary
Dt (°C)
20.0
G (l/h)
- 1.000
t (°C)
55.0
t (°C)
G (l/h)
55.0
1.500
GB
GB
);
2
);
2
);
2
t (°C)
G (l/h)
75.0
1.500
Secondary
Dt (°C)
20.0
t (°C)
G (l/h)
55.0
1.500
t (°C)
G (l/h)
75.0
1.500
Secondary
Dt (°C)
20.0
t (°C)
G (l/h)
55.0
1.500
t (°C)
G (l/h)
67.0
2.500
Secondary
Dt (°C)
12.0
t (°C)
G (l/h)
55.0
2500
Publicidad
