KAESER ESD 442 SFC, Technical Documentation Manual

Page: 409 / 413

Helium unit
Measurement record
for helium screw compressor units
Compressor unit Type/Serial-No.:
ESD 442 SFC 14,0 bar(a) HE a.c. /480V 60Hz / 1205 - Linde CH, Proj. Florence12, USA
Mat.No.:
ESD.2C
Equipment-No.:
4824071
Airend Type/Serial-No.:
Sigma 38 Helium / 1014 EQ.-No. 788085
Motor Type/Serial-No.: Make:
Siemens
Rated power [kW]:
250
Speed [min
-1
]:
Warranty terms
Suction temperature T
A
:
298
K
Suction pressure p
A
:
1,05
bar (abs) Rate of mass flow m:
31,1
g/s Tol.:
+5 / -2
%
Unit outlet pressure p
e
:
14,0
bar (abs) Power input P
IN
:
111,6
kW Tol.:
+/- 3
%
Measurement results
Ambient pressure p
U
:
0,984
bar (abs) Ambient temperature T
U
:
298
K
Suction temperature T
A
:
299,6
K Discharge temp. T
(END)
:
327
K
Unit outlet temperature T
(OUT)
:
---
K
Gas meter inlet temperature T
B1
:
299,1
K
Gas meter outlet temp. T
B2
:
---
K
Suction pressure p
A
:
1,05
bar (abs)
Unit outlet pressure p
e
:
14,0
bar (abs)
Gas meter working pressure p
B
:
5,74
bar (abs)
Gas meter working volume V
B
:
10,0
m³
Duration of measurement t: 5,18
min
Compressor speed n
K
:
595
min
-1
Deviation
Package power input P
IN
: 108,2
kW
20 Hz
-3,05
%
Pressure ratio:
5,74
5,467
1,05
Free gas delivery (referring to inlet conditions ) [m³/min]
10,0 299,60
5,467 10,571
5,18 299,10
Density at inlet conditions [kg/m³]
273,15 1,05
0,1785 0,1687
299,60 1,013
Rate of mass flow [g/s]
10,571 0,1687 29,72
Remarks: Deviation
For T
A
= 298,0 K and res.
ρ
A = 0,1696 mass flow will result in approx. m = 29,88 g/s
-3,93
%
Date: Name:
M. Skrobek
1LG6318-4AA96-Z
30.08.13
V
A
=
t
=
V
B
T
B
T
A
Z
x x
=
x x
= x x
ρ
A
=
=
p
N
p
A
x x
ρ
N
T
A
T
N
=
x m
=
=
x
x
60
1000
V
A ρ
A
x
60
1000
Z =
p
A
p
B
= =