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Posted by Mark on November 5, 2007, 1:27 pm
>
> >> The variable speed is probably saving $15.00 a month, easy.
>
> >I doubt it...got anything to back that up?
>
> >Mark
>
> IF the customer is running the fan constantly, Id bet its easily
> saving that much.
> Bubba
Putting a conventional multi-speed motor on low speed gives the same
savings without the complicated expensive failure prone radio
interering electronics.
Mark
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Posted by Bubba on November 5, 2007, 6:21 pm
>>
>> >> The variable speed is probably saving $15.00 a month, easy.
>>
>> >I doubt it...got anything to back that up?
>>
>> >Mark
>>
>> IF the customer is running the fan constantly, Id bet its easily
>> saving that much.
>> Bubba
>
> Putting a conventional multi-speed motor on low speed gives the same
>savings without the complicated expensive failure prone radio
>interering electronics.
>
>
>Mark
>
Are you always "high" like this or is this just a first for you?
Bubba
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Posted by Noon-Air on November 5, 2007, 7:30 pm
>>
>> >> The variable speed is probably saving $15.00 a month, easy.
>>
>> >I doubt it...got anything to back that up?
>>
>> >Mark
>>
>> IF the customer is running the fan constantly, Id bet its easily
>> saving that much.
>> Bubba
>
> Putting a conventional multi-speed motor on low speed gives the same
> savings without the complicated expensive failure prone radio
> interering electronics.
Gee.... I don't seem to have a problem with RFI, nor do any customers I have
installed new systems for.....several of which are also HAM radio operators.
73
DE N6OJN
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Posted by geothermaljones on November 6, 2007, 9:16 pm
Yes...
My & a few dozen others, utility bills, & we're all comfortable...
A VSD in constant operation is far more efficient than even a conventional
blower operating on call, in the heart of the heating or cooling season.
The added dehumidification is a huge benefit as well.
See, DC is a much more efficient powersource when use in close proximity of
production.
Edison & Tesla & Westinghouse all new it,
Unfortunately the DC supply to a power grid in an urban area would require
huge quantities of copper to transmit.
Now if they'd just have used more localized transformers & generation, we'd
all be saving energy.
And I'd thought this string was dead...
geothermaljones.
>
> > The variable speed is probably saving $15.00 a month, easy.
> >
> >
> >
> >
>
> I doubt it...got anything to back that up?
>
> Mark
>
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Posted by Dave Martindale on November 7, 2007, 3:35 pm
>See, DC is a much more efficient powersource when use in close proximity of
>production.
DC *at the voltage you happen to need* is more efficient than AC,
because there are no transformer losses. But if the voltages don't
match, it's much more complicated and expensive to change voltage with
DC.
>Unfortunately the DC supply to a power grid in an urban area would require
>huge quantities of copper to transmit.
>Now if they'd just have used more localized transformers & generation, we'd
>all be saving energy.
There are probably only a few houses sharing the same pole transformer
(and thus the same 120/240 V supply). All other distribution is done at
higher voltage. To get the same efficiency (both electric and copper
usage) with DC, you'd need a source for every few houses. But
generators that small aren't very clean or efficient.
Centralized generation and AC distribution, using several levels of
voltage, makes much more sense for supplying homes.
DC is sometimes used to transmit large amount of power long distances.
Dave
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Page 4 of 6 < 1 2 3 > last >>
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