Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contactus/.
Click here to Find a Contractor in your area.
Steam coil
Snowmelt
Member Posts: 1,399
I have a steam coil, the coil is used with a blower motor to blow hot air in a gymnasium, the coil is 2 x 18 x 36. And 4 x18 x 36. There both x 2 what is the Edr of the coil
0
Comments

You will need to find out the CFM, how many rows of fins, how many fins per inch.0

Assuming this is hooked up with a steam trap, disconnect the condensate line after the trap. Run a temp copper line from the trap into a barrel of water and submerge the condensate line in the barrel. Weigh the barrel with enough water in it to cover the condensate line. Turn on fan and steam and run for 5 min and shut off. Weigh barrel and subtract barrel and water initial weight. Multiply weigh difference by x12. the answer will be the # of pounds of steam used per hour.
Multiply pounds of steam x 1000 to get btus. Devide by 240 to get square ft of steam or edr.
or do it the easy way and call the equipment mfg0 
I’ll look for manufacturers plate on unit , they did just replace the fan0

Also will need ot know steam pressure, and EAT (entering air temp)
If you can determine CFM of the blower by looking up the fan curve from the mfg and checking amp draw and reference to the RPM of the fan wheel. Then use temp rise to determine BTU output.
(Delta T) * 1.08 * CFM = BTU/hr
Divide by 240 for EDR (depending on steam pressure)0
Categories
 All Categories
 84.7K THE MAIN WALL
 3K AC, Heat Pumps & Refrigeration
 54 Biomass
 421 Carbon Monoxide Awareness
 58 Chimneys & Flues
 1.8K Domestic Hot Water
 5K Gas Heating
 124 Geothermal
 158 IndoorAir Quality
 3.2K Oil Heating
 57 Pipe Deterioration
 830 Plumbing
 5.6K Radiant Heating
 373 Solar
 14.3K Strictly Steam
 3.1K Thermostats and Controls
 55 Water Quality
 42 Industry Classes
 83 Job Opportunities
 24 Recall Announcements