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Posted by Steve Scott on January 8, 2007, 11:19 pm
To be honest, Fish, I don't promote it as an energy saver in most
applications, although it is. There are just too many variables,
degree days, occupants, occupant usage of the home, DHW usage, etc.
The margin simply isn't enough to spend in a big debate with the HO as
to whether it saved them $$$ or not.
I promote the comfort realized from the system. Constant circulation
with heat loss of the home matched by system output. Particularly if
the emitters are panel radiators with TRVs.
But to your question of payback. I'd say if you had panel rads with
TRVs and no reset control and then installed a reset control AND
everything else stayed the same 5-10% savings wouldn't be unreasonable
to expect. Around here average size house with gas or fuel oil 5-10
years probably. LP is about 30-50% more so the payback would be
sooner. But the comfort is really where it's at.
You don't ever use heating out there so it's moot to you. :) Or is
it cold this year? We just got some snow today. A dusting. It's the
first we've had since a week or so before Christmas.
On Tue, 09 Jan 2007 02:32:18 GMT, gofish@gonefishin.net wrote:
>
>>We're installing a new system similar to this for a client right now.
>>What they're talking about is called an outdoor reset control.
>>
>>Yes, they generally will help reduce the fuel bill.
>>
>
> whats the installation costs versus the energy savings?
>
> what is the estimated payback? 20-30 years?
>
>
>
>
>
>
>>On 8 Jan 2007 15:19:41 -0800, thodgkin@earthlink.net wrote:
>>
>>>I'm new to this world. My furnace technician suggested I think about
>>>an energy management system for my domestic oil-fired boiler. He says
>>>it works by sensing the outside temperature and then adjusting the
>>>boiler temp required to heat the house.. eg. if it's -10* out then the
>>>boiler goes ahead and makes 200* water for the radiators. If it's only
>>>40* out, then the boiler only heats the water to, say, 160*.
>>>Theoretically, less oil use. Does anyone know this kind of system?
>>>Does it work to reduce fuel use?
>>>System is oil-fired hot-water radiator system in a 3,000 sq. foot house.
--
You can't direct the wind, but you can
adjust your sails.
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