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MikeONeill
Mechanical
- Apr 3, 2001
- 23
I'm trying to calculate the condensate load of a steam coil (steam is taken from the cold reheat line off a boiler) used to warm inlet air to the boiler. Conditions are as follows:
65psig superheated steam @ 610F inlet pressure, heating 176,000 cfm air from 0F to 123F. Steam velocity is roughly 750FPM. friction through the coil is less than .3 inches of water.
I can calculate the condensate load based on saturated steam, but I can't find a formula or factor to apply for superheat. The load based on saturated would be around 27,060 lb/hr. I can't imagine a load that high taking into consideration the time needed to subcool the steam, and the heat conduction of upstream steam.
65psig superheated steam @ 610F inlet pressure, heating 176,000 cfm air from 0F to 123F. Steam velocity is roughly 750FPM. friction through the coil is less than .3 inches of water.
I can calculate the condensate load based on saturated steam, but I can't find a formula or factor to apply for superheat. The load based on saturated would be around 27,060 lb/hr. I can't imagine a load that high taking into consideration the time needed to subcool the steam, and the heat conduction of upstream steam.
