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Greenbuilding Archive for January 2002
564 messages, last added Tue Nov 26 17:26:27 2002

[Date Index][Thread Index]

[GBlist] deep well submersibles - AC or DC?



Group:
 
We drilled a well on a hill top, and had to go down 500ft to get 3-5gpm.  The static level is about 100ft. below the ground.
 
The PV system is 3Kw, but there is only one inverter (no 240 Volt).
 
A DC deep submersible pump runs about $1500.  A 1/2 HP Gould (for example) will cost a few hundred dollars and run on 110V - BUT the system will still require a large holding tank and a 1/4 or 1/2HP DC pump (??) to pressurize the house.
 
OR, I can use a 3/4 to 1 HP Gould pump with a step-up transformer (to produce 230volt) and a BIG storage tank (should I  have a concern about the load on the inverter??).
 
What is the BEST way to handle this?
 
Richard