Condensate Return/ Pump Capacity/ Head
Condensate Return/ Pump Capacity/ Head
(OP)
Hello All,
Please I need your help.
I have a LP-steam boiler discharge preesure 10 psig, located 600 feet from a building. The pressure entering the bldg. 5 psig. I allow 5 psig pressure drop for the run, and 5 psig to the bldg. The bldg. area 5312 sq.ft and the total steam load 480 #/hr for 3 UH, 1 HV, I used 1/2 psig/100' pressure drop.
I found the pump capacity:GPM=(480 #/hr)/(20*500)=48
I calculate and found 3" LPS pipe, and 2" CR pipe. How much head I should use if the bldg. roof 24 feet. And how much I should pitch the Supply/Condesate return, is 1/4" per 10' ok.Is these calculations are ok.
Best regards.
Please I need your help.
I have a LP-steam boiler discharge preesure 10 psig, located 600 feet from a building. The pressure entering the bldg. 5 psig. I allow 5 psig pressure drop for the run, and 5 psig to the bldg. The bldg. area 5312 sq.ft and the total steam load 480 #/hr for 3 UH, 1 HV, I used 1/2 psig/100' pressure drop.
I found the pump capacity:GPM=(480 #/hr)/(20*500)=48
I calculate and found 3" LPS pipe, and 2" CR pipe. How much head I should use if the bldg. roof 24 feet. And how much I should pitch the Supply/Condesate return, is 1/4" per 10' ok.Is these calculations are ok.
Best regards.





RE: Condensate Return/ Pump Capacity/ Head
Remember to allow for expansion on these lines.
RE: Condensate Return/ Pump Capacity/ Head
1 GPM all I need, what about delta T.
1 GPM=(500#/hr)/500, (500=8.3lbs/gal*60 min/hr)
GPM=(500#/h)/(20 F*500)= 500*975 BTUH/10000=48.75 GPM
How about the lift, (600'+300')for fitting, elbows*0.04=36 feet.
Best regards.
RE: Condensate Return/ Pump Capacity/ Head
RE: Condensate Return/ Pump Capacity/ Head
The total steam load to the bldg. 480 #/hr
for (3)48#/hr UH, (1)18#/hr UH and
(1)314 #/hr for HV unit. The HV unit has
5120 CFM,
face velocity=640 fpm,
Entering DBT=15 F
Leaving DBT=72 F
Steam Temp.=227 F
Thank you for your help.
RE: Condensate Return/ Pump Capacity/ Head
I can tell that you're not a "steam guy". You should likely find somebody from Spirax Sarco, Armstrong, Bell & Gossett, etc in your area to walk you through this.
RE: Condensate Return/ Pump Capacity/ Head
You the only one who got back to me.
I am still new in Engineering Field, "Steam", etc.
Thank you again.