hxr_900_duty, hxr_900_water_gpm

hxr_900_duty is argon duty in the vaporizer exchanger HXR_900.

hxr_900_water_gpm metric uses the hxr_900_duty to calculate the water flow rate in the exchanger, it is calculated as a mass flow rate and converted to a volumetric flow rate in GPM (gallons per minute).

Note. There is also a flow meter that is used to directly measure the cooling water flow rate FT_904 as well as this caluclated method.

TE902 is the hxr outlet argon temperature TE901 is the hxr inlet argon temperature

helper values

• mfr = ... is mass flow rate of Ar:
  • ARS14002, 16005, 16006: p_800_scfm
  • ARS15002: FT1002
• cp = 0.3 is liquid/supercritical argon heat capacity, BTU/lb F. A single non temperature dependent value is used.
• 0.12 is conversion to GPM

formula

• hxr_900_duty = lbh(mfr) * cp * abs(TE902 - TE901)
• hxr_900_water_gpm = (hxr_900_duty / (TE903 - TE904) / 60) * 0.12