jartgo
Civil/Environmental
- Oct 20, 2005
- 220
I'm working on a booster pump for a gas chlorine system. The client is determined to include gas chlorine in lieu of hypochlorite, so that issue is settled. I'm having some reservation with settling on a booster pump for the ejector. The ejector to be provided by the supplier is a REGAL 13A which manufacturers literature states a requirement of 132PSI and 5.1 GPM. The 13A is rated for 10PPD. My design feed rate is 5 PPD. This seems logical.
My well pump system will be approximately 90 PSI at the chlorination point. Thus, I have considered the following calculation: 132 PSI (required) - 90 PSI (available) + 5 PSI (assumed booster pump losses) = 47PSI = 109 Ft TDH
So, I'm looking for a booster pump to provide something close to 5GPM at 110 Ft TDH. I've been looking at the Franklin Electric BT4, but the smallest pump (5gpm) that they make is 1 / 3 HP and in moves 7 gpm at 140 at the far right point on the curve.
I guess I feel like it's fairly unrealistic to think I'll find a pump that meets my conditions exactly and I'm not sure which direction to go from there. Do I get the 1/ 3 HP BT4 and try to size the discharge piping to impose additional friction losses (this seems illogical in that it would require friction of about 200 feet of ½" SCH80 pvc) or perhaps just close a discharge valve to create the loss? How much leeway do I have based on the requirements listed on the ejector literature? If I can't meet it exactly, which way should I lean? Should I consider that the published literature is rated for 10PPD and my feed rate is 5 PPD? Any suggestions/direction would be appreciated.
My well pump system will be approximately 90 PSI at the chlorination point. Thus, I have considered the following calculation: 132 PSI (required) - 90 PSI (available) + 5 PSI (assumed booster pump losses) = 47PSI = 109 Ft TDH
So, I'm looking for a booster pump to provide something close to 5GPM at 110 Ft TDH. I've been looking at the Franklin Electric BT4, but the smallest pump (5gpm) that they make is 1 / 3 HP and in moves 7 gpm at 140 at the far right point on the curve.
I guess I feel like it's fairly unrealistic to think I'll find a pump that meets my conditions exactly and I'm not sure which direction to go from there. Do I get the 1/ 3 HP BT4 and try to size the discharge piping to impose additional friction losses (this seems illogical in that it would require friction of about 200 feet of ½" SCH80 pvc) or perhaps just close a discharge valve to create the loss? How much leeway do I have based on the requirements listed on the ejector literature? If I can't meet it exactly, which way should I lean? Should I consider that the published literature is rated for 10PPD and my feed rate is 5 PPD? Any suggestions/direction would be appreciated.