KAESER ESD 352 SFC, Technical Documentation Manual

Page: 411 / 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:
79,5
g/s Tol.:
+5 / -2
%
Unit outlet pressure p
e
:
14,0
bar (abs) Power input P
IN
:
257,9
kW Tol.:
+/- 3
%
Measurement results
Ambient pressure p
U
:
0,984
bar (abs) Ambient temperature T
U
:
299
K
Suction temperature T
A
:
301,0
K Discharge temp. T
(END)
:
354
K
Unit outlet temperature T
(OUT)
:
---
K
Gas meter inlet temperature T
B1
:
301,2
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
:
5,94
bar (abs)
Gas meter working volume V
B
:
25,0
m³
Duration of measurement t: 5,12
min
Compressor speed n
K
:
1487
min
-1
Deviation
Package power input P
IN
: 246,5
kW
50 Hz
-4,42
%
Pressure ratio:
5,94
5,657
1,05
Free gas delivery (referring to inlet conditions ) [m³/min]
25,0 301,00
5,657 27,604
5,12 301,20
Density at inlet conditions [kg/m³]
273,15 1,05
0,1785 0,1679
301,00 1,013
Rate of mass flow [g/s]
27,604 0,1679 77,25
Remarks: Deviation
For T
A
= 298,0 K and res.
ρ
A = 0,1696 mass flow will result in approx. m = 78,02 g/s
-1,86
%
For T
A
=
309,0 K and res.
ρ
A = 0,1636 mass flow will result in approx. m = 75,25 g/s
-1,86
%
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
= =