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Posted by ransley on December 3, 2008, 10:23 am
On Dec 2, 2:40=A0pm, "Cwatters"
show/hide quoted text
> > Tell us all who makes a 90% efficent tank water heater...
> "In tank" electric heating elements are 100% efficient. Where else does t=
> energy go if not into heat? Most are pretty quiet.
> Sorry if anything has been lost in translation (I'm English).
Thats electric, and it really 99-100% efficent, OP is talking Gas.
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Posted by Cwatters on December 3, 2008, 11:41 am
On Dec 2, 2:40 pm, "Cwatters"
show/hide quoted text
>> Sorry if anything has been lost in translation (I'm English).
>Thats electric, and it really 99-100% efficent, OP is talking Gas.
Ah thanks. We would call them Boilers or central heating boilers.
Since April 2005 all gas boilers in the UK have been condensing types. Non
condensing types can only be about 88% efficient but condensing types can be
90+% efficient..
Example:
http://www.worcester-bosch.co.uk/installer/products/gas-fired-boilers-and-systems
The oil boiler I have is 92-93% efficient...
http://www.grantuk.com/product/28
but there are different ways to calculate efficiency. This explains how to
get a headline rate of 102% ...
http://www.blesi-evans.com/102%20percent%20efficiency.pdf
How do running costs compare for electric, gas, oil in the USA? We have a
comparison site here...
http://www.nottenergy.com/energy-costs-comparison3
For what it's worth it assumes 90% efficiency for a gas boiler.
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Posted by ransley on December 4, 2008, 6:30 am
On Dec 3, 10:41=A0am, "Cwatters"
show/hide quoted text
> On Dec 2, 2:40 pm, "Cwatters"
> >> Sorry if anything has been lost in translation (I'm English).
> >Thats electric, and it really 99-100% efficent, OP is talking Gas.
> Ah thanks. We would call them Boilers or central heating boilers.
> Since April 2005 all gas boilers in the UK have been condensing types. No=
> condensing types can only be about 88% efficient but condensing types can=
be
show/hide quoted text
> 90+% efficient..
> Example:http://www.worcester-bosch.co.uk/installer/products/gas-fired-boi=
lers...
show/hide quoted text
> The oil boiler I have is 92-93% efficient...http://www.grantuk.com/produc=
t/28
show/hide quoted text
> but there are different ways to calculate efficiency. This explains how t=
> get a headline rate of 102% ...http://www.blesi-evans.com/102%20percent%2=
0efficiency.pdf
show/hide quoted text
> How do running costs compare for electric, gas, oil in the USA? We have a
> comparison site here...http://www.nottenergy.com/energy-costs-comparison3
> For what it's worth it assumes 90% efficiency for a gas boiler.
England an energy Exporter has had the foresight to mandate condensing
heat units, here in the dumb ol USA 83% efficent is still pushed
because installers like the "easy" instal and idiot homeowners are to
dumb to do the math, its a joke, we import oil and we allow 83%
efficent heat. Water heater tanks are just one reason we as a nation
use a majority of the world energy by % of population. Its a fact, in
new construction a hot tub is more common than a high efficency heat
plant.
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Posted by JamesGangNC on December 4, 2008, 12:36 pm
show/hide quoted text
> On Dec 3, 10:41=A0am, "Cwatters"
> > On Dec 2, 2:40 pm, "Cwatters"
> > >> Sorry if anything has been lost in translation (I'm English).
> > >Thats electric, and it really 99-100% efficent, OP is talking Gas.
> > Ah thanks. We would call them Boilers or central heating boilers.
> > Since April 2005 all gas boilers in the UK have been condensing types. =
Non
show/hide quoted text
> > condensing types can only be about 88% efficient but condensing types c=
an be
show/hide quoted text
> > 90+% efficient..
> > Example:http://www.worcester-bosch.co.uk/installer/products/gas-fired-b=
oilers...
show/hide quoted text
> > The oil boiler I have is 92-93% efficient...http://www.grantuk.com/prod=
uct/28
show/hide quoted text
> > but there are different ways to calculate efficiency. This explains how=
to
show/hide quoted text
> > get a headline rate of 102% ...http://www.blesi-evans.com/102%20percent=
%20efficiency.pdf
show/hide quoted text
> > How do running costs compare for electric, gas, oil in the USA? We have=
> > comparison site here...http://www.nottenergy.com/energy-costs-compariso=
> > For what it's worth it assumes 90% efficiency for a gas boiler.
> England an energy Exporter has had the foresight to mandate condensing
> heat units, here in the dumb ol USA 83% efficent is still pushed
> because installers like the "easy" instal and idiot homeowners are to
> dumb to do the math, its a joke, we import oil and we allow 83%
> efficent heat. Water heater tanks are just one reason we as a nation
> use a majority of the world energy by % of population. Its a fact, in
> new construction a hot tub is more common than a high efficency heat
> plant.- Hide quoted text -
> - Show quoted text -
That's pretty easy when your entire country is the size of some of our
states. Besides we have a reputation as consumers of 25% of the
worlds energy to hold up over here on our side of the pond.
My hot tub is electric so that 100% efficiency but the insulation is
probably only r6 or so I'd guess.
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Posted by Voyager on December 4, 2008, 9:35 pm
JamesGangNC@gmail.com wrote:
show/hide quoted text
>> On Dec 3, 10:41 am, "Cwatters"
>>> On Dec 2, 2:40 pm, "Cwatters"
>>>>> Sorry if anything has been lost in translation (I'm English).
>>>> Thats electric, and it really 99-100% efficent, OP is talking Gas.
>>> Ah thanks. We would call them Boilers or central heating boilers.
>>> Since April 2005 all gas boilers in the UK have been condensing types. Non
>>> condensing types can only be about 88% efficient but condensing types can be
>>> 90+% efficient..
>>>
Example:http://www.worcester-bosch.co.uk/installer/products/gas-fired-boilers...
show/hide quoted text
>>> The oil boiler I have is 92-93% efficient...http://www.grantuk.com/product/28
>>> but there are different ways to calculate efficiency. This explains how to
>>> get a headline rate of 102%
...http://www.blesi-evans.com/102%20percent%20efficiency.pdf
show/hide quoted text
>>> How do running costs compare for electric, gas, oil in the USA? We have a
>>> comparison site here...http://www.nottenergy.com/energy-costs-comparison3
>>> For what it's worth it assumes 90% efficiency for a gas boiler.
>> England an energy Exporter has had the foresight to mandate condensing
>> heat units, here in the dumb ol USA 83% efficent is still pushed
>> because installers like the "easy" instal and idiot homeowners are to
>> dumb to do the math, its a joke, we import oil and we allow 83%
>> efficent heat. Water heater tanks are just one reason we as a nation
>> use a majority of the world energy by % of population. Its a fact, in
>> new construction a hot tub is more common than a high efficency heat
>> plant.- Hide quoted text -
>> - Show quoted text -
>
> That's pretty easy when your entire country is the size of some of our
> states. Besides we have a reputation as consumers of 25% of the
> worlds energy to hold up over here on our side of the pond.
>
> My hot tub is electric so that 100% efficiency but the insulation is
> probably only r6 or so I'd guess.
It is 100% efficient at the point of use, but when you factor in
generation and transmission losses, electric power isn't always such a
good deal. Even though, as an EE, I'm partial to electricity the is
that it isn't always the best solution when total system efficiency is
considered.
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> "In tank" electric heating elements are 100% efficient. Where else does t=
> energy go if not into heat? Most are pretty quiet.
> Sorry if anything has been lost in translation (I'm English).