EFFEBI-PRESS
Tubi in acciaio al carbonio per riscaldamento (ruvidità k= 0,0015
mm). Perdite di carico R in funzione della portata massica m e
della velocità v alla temperatura dell’acqua di 80°C.
Tab. 18
Carbon steel pipes for heating (roughness k= 0,0015 mm).
Pressure drops R as a function of mass flow m and speed v at 80 °C
water temperature.
D
i
m
e
n
s
i
o
n
e
N
o
m
i
n
a
l
s
i
z
e
D
i
a
m
e
t
r
o
e
s
t
e
r
n
o
x
s
p
e
s
s
o
r
e
-
P
i
p
e
o
u
t
s
i
d
e
d
i
a
m
e
t
e
r
x
w
a
l
l
t
h
i
c
k
n
e
s
s
D
i
m
e
n
s
i
o
n
e
N
o
m
i
n
a
l
s
i
z
e
P
i
p
e
o
u
t
s
i
d
e
d
i
a
m
e
t
e
r
x
w
a
l
l
t
h
i
c
k
n
e
s
s
D
i
m
e
n
s
i
o
n
e
N
o
m
i
n
a
l
s
i
z
e
D
i
a
m
e
t
r
o
e
s
t
e
r
n
o
x
s
p
e
s
s
o
r
e
d
e
x
s
/
O
D
x
t
[
m
m
]
d
i
/
I
D
[
m
m
]
P
e
r
d
i
t
e
d
i
c
a
r
i
c
o
P
r
e
s
s
u
r
e
d
r
o
p
s
1
2
x
1
.
2
1
5
x
1
,
2
1
8
x
1
,
2
2
2
x
1
,
5
2
8
x
1
,
5
3
5
x
1
,
5
d
e
x
s
/
O
D
x
t
[
m
m
]
d
i
/
I
D
[
m
m
]
P
e
r
d
i
t
e
d
i
c
a
r
i
c
o
P
r
e
s
s
u
r
e
d
r
o
p
s
4
2
x
1
,
5
5
4
x
1
,
5
d
e
x
s
/
O
D
x
t
[
m
m
]
d
i
/
I
D
[
m
m
]
P
e
r
d
i
t
e
d
i
c
a
r
i
c
o
P
r
e
s
s
u
r
e
d
r
o
p
s
7
6
,
1
x
2
8
8
,
9
x
2
1
0
8
x
2
[
P
a
/
m
]
[
k
g
/
h
]
[
m
/
s
]
[
k
g
/
h
]
[
m
/
s
]
[
k
g
/
h
]
[
m
/
s
]
[
k
g
/
h
]
[
m
/
s
]
[
k
g
/
h
]
[
m
/
s
]
[
k
g
/
h
]
[
m
/
s
]
[
P
a
/
m
]
[
k
g
/
h
]
[
m
/
s
]
[
k
g
/
h
]
[
m
/
s
]
[
P
a
/
m
]
[
k
g
/
h
]
[
m
/
s
]
[
k
g
/
h
]
[
m
/
s
]
[
k
g
/
h
]
[
m
/
s
]
2
9
3
2
3
5
3
9
4
4
4
9
5
4
5
9
6
4
6
9
7
4
7
8
8
8
9
8
1
0
8
1
1
8
1
2
8
1
3
7
1
4
7
1
5
7
1
6
7
1
7
7
1
8
6
1
9
6
2
1
6
2
3
5
2
5
5
2
7
5
2
9
4
3
2
4
3
5
3
3
9
2
4
4
1
4
9
0
5
4
0
5
8
9
6
3
8
6
8
7
7
3
6
7
8
5
8
8
3
9
8
1
1
.
0
7
9
1
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1
7
7
1
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2
7
5
1
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3
7
3
1
.
4
7
1
1
.
5
7
0
1
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6
6
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1
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6
6
1
.
8
6
4
1
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9
6
2
2
9
0
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1
1
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1
0
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1
4
1
0
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0
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1
6
1
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0
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1
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3
9
3
0
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2
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0
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Manuale Tecnico [profilo M]
41
Technical Guide [M-Profile]
