Hi Carl,
Sorry,
use
hipowerhydro.com
or his email at
[EMAIL PROTECTED]
jay
On Oct 16, 2008, at 3:39 PM, Carl Emerson wrote:
Jay,
Can’t find Derik… – www.highpowerhydro.com is inactive.
Can you advise contact details?
Thanks.
Carl E.
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
] On Behalf Of jay peltz
Sent: 2 October 2008 10:06 a.m.
To: RE-wrenches
Subject: Re: [RE-wrenches] Micro Hydro control
HI Carl,
I recommend you contact Derik at highpowerhydro.com
He has done many of these systems.
The main issues are pressure, number of nozzles, type/manufacturer
of turbine and voltage to determine the voltage of the valve.
Good luck,
jay
peltz power
On Oct 1, 2008, at 1:04 PM, Carl Emerson wrote:
Hi There,
Thanks for the helpful comments.
Hydro is 400V 3 phase AC.
I have a 1500 foot underground feed back to the house
I would like to hear if anyone has done this and what were the
issues to watch for.
Here in NZ streams change level very fast summer or winter.
I am planning to rectify to DC and then use three windyboy1700’s one
on each local 230V phase.
I will hunt down the hydro group also for further information.
Many Thanks all
Carl E.
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
] On Behalf Of jay peltz
Sent: 1 October 2008 4:07 a.m.
To: RE-wrenches
Subject: Re: [RE-wrenches] Micro Hydro control
Hi Carl,
Yes there are some options.
If you use a good pressure activated switch, you can turn on/off
slow opening electric valves as flow changes.
IE so as the flow drops, the pressure drops and at the activation
point, the relay closes one or more valves allowing the pressure to
build up at which point the valve will open again.
For finer regulation you might need more than one valve to have a
relay and more than one pressure switch.
Its can be pretty expensive, but it does work.
What voltage is the turbine? This helps to know if you can use the
turbine power to control the valves.
thanks,
jay
peltz power
On Sep 29, 2008, at 9:36 PM, Carl Emerson wrote:
Hi there gang,
We are looking at a 4kW PM hydro for a client and was wondering if
anyone has done an automated control of flow into such a unit so as
to limit the amount of water being taken from the stream in the
Summer.
This is usually done manually by closing down nozzles on the unit
but here in NZ weather changes fast and the unit is 500M from the
house. Summer rains can be significant and sudden.
We are planning a 6inch pipe with around 100 ft of fall, the stream
when low will allow a flow of 20Litres/sec but when high will
deliver twice that amount.
Any suggestions??
Thanks
Carl Emerson
Freepower Ltd.
Auckland NZ
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