Funny you should ask... in San Diego it can be as high as $0.55/kWh
depending on season, rate schedule, time of day and overall usage. But I
get your point. New commercial buildings commonly use VFDs for HVAC and
pumps, to save energy.
Steve
sparkie001@pobox.com
stevew7sjk@gmail.com
www.facebook.com/imetsteve
On Mon, Jul 2, 2018 at 10:54 AM James Jordan <k4qpl2@gmail.com> wrote:
> Good question. Thanks but the power situation in Turks & Caicos is very
> different from USA. Electricity is about $.48 PER KILOWATT HOUR! What’s
> yours? Pool alone presently costs almost $300/month for power. A two speed
> doesn’t have enough flexibility to optimize energy usage while providing
> adequate circulation and filtering. The new VS drives are also inherently
> more efficient so I’ll just have to deal with any RFI that results. Most of
> our renters are not hams in any event and if push comes to shove we’ll
> switch off or to the backup fixed speed pump during a contest etc.
> Hopefully line filters and ferrites will keep things manageable.
> 73,
> Jim K4QPL VP5M
>
> Sent from my iPhone
>
> > On Jul 2, 2018, at 12:53 PM, Jim Brown <jim@audiosystemsgroup.com>
> wrote:
> >
> > Why use variable speed controller at all? Most systems that use motor
> controllers have 2-speed controllers as "standard equipment" and offer
> variable speed as an upgrade. I suggest that you try to avoid variable
> speed.
> >
> > 73, Jim K9YC
> >
> >> On 7/1/2018 11:25 AM, James Jordan wrote:
> >> Other comments or suggestions?
> >
> >
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