The discharge temperature limits are presented as both an application limit and a maximum discharge temperature shutdown set point. The Ariel Performance Software provides a blue and red flag on discharge temperature. The blue flag represents a guideline for applying a selection. The red flag represents the maximum discharge temperature shutdown set point. The maximum discharge temperature shutdown set point is listed in the instrumentation section of the Packager Standards.

The Ariel performance software will provide a red flag if the discharge temperature exceeds the maximum allowable discharge temperature shutdown limit. A blue flag will be provided when the discharge temperature exceeds the application guideline, a warning as the discharge temperature approaches the maximum allowable level. A warning will also be displayed when the average of the suction temperature and discharge temperature exceeds 285 F (140 C).

The discharge temperature calculated by current version of the Ariel Reciprocating Performance Program, is based on suction temperature plus cylinder pre-heat and internal compression ratio. The equation is as follows:

 or for metric units  

TD = Discharge Temperature, °F or °C

TS = Internal Suction Temperature, °F or °C

R = Internal Compression Ratio , pressure discharge / pressure suction

k = Ratio of Specific Heats