H301/302 HSR Compressors | Rev. 2.2 | 55
Cylinder Discharge Temperature Shutdown Settings
Shut Down Setting Recommendations
The discharge temperature shut down set point of each
cylinder must be set at 10%, but NEVER more than 25°F (14°C)
above the highest NORMAL daily discharge temperature of
that cylinder.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (9)
Due to changing operating and ambient conditions, it is the
operator’s responsibility to daily check, justify, confirm, and
adjust (as may be required) all safety shut down devices.
The maximum allowable operating temperature out of the
cylinders is 350°F. (177°C) on hydrocarbon gases.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (9)
The discharge temperature (DT) setting shuts the compressor down due to rising
cylinder temperatures to prevent major damage.
Discharge Temperature Calculations
Example 1
Example 2
ST =
80°F
100°F
SP =
300 Psig
300 Psig
DP =
600 Psig
600 Psig
ATM =
14.65 Psig
14.65 Psig
N =
1.26
1.26
DT =
167°F
191°F
DTal =
179°F
203°F
DTsd =
192°F
216°F
Table 15
Discharge temperature calculations
Cylinder Temperature Shutdown Setting/Formula
For proper cylinder protection, a compressor‘s high discharge gas temperature
alarm and shutdown settings should
be the lesser of
;
a. Alarm – set at 5% or 12°F (7°C), whichever is less, than normal operating
temperature.
b. Shutdown – set at 10% or 25°F (14°C), whichever is less, than normal
operating temperature.
A floating discharge temperature alarm (DTal) and shut down (DTsd) value (one
per cylinder) can be programmed into a compressor package’s Programmable
Summary of Contents for H301 Series
Page 1: ...High speed reciprocating compressors H301 and 302 series operating manual GE Oil Gas ...
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