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Posted by mm on January 30, 2007, 12:09 am
wrote:
>
>> Looking for some feedback on using an infrared (IR) camera for a d-i-y
>> home energy audit. I'm thinking of taking some thermal pics of the
>> house to identify major problem areas (poorly insulated doors,
>> windows, attic, etc.) Kinda like <http://www.predictive-
>> maintenance.com/energy.html>
>>
>> Has anyone done something like that before, and could offer helpful
>> tips?
>>
>> Also, looking for suggestions on an affordable, yet decent (still
>> picture) IR camera for this kind of application; best place to buy
>> one?
>>
>> I realize that even a simple such IR camera would cost more than an
>> energy audit done by my local utility. But I guess it'd be fun to d-i-
>> y, be able to take some before and after pics, etc :)
>>
>
>Can you still buy infrared film for regular cameras?
I would hope so. You can't get it at Walgreen's but I would think a
camera store has some. If not there, a better than average camera
store. That would certainly be the cheapest way, instead of buying a
whole camera!
BTW, probably best in a camera with manual focus, because the focal
length isn't quite the same as for visible light. The lenses I've
seen have a red dot, iirc, near the usual indicator line, for focusing
infrared.
BTW2, I still have a roll or IR film in my refrigerator. It's been
there for about 25 years. I keep meaning to use it, but I have no
particular need. Hmmm, how about checking for heat loss!
>Bob
>
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Posted by JoeSpareBedroom on January 29, 2007, 7:43 pm
> Looking for some feedback on using an infrared (IR) camera for a d-i-y
> home energy audit. I'm thinking of taking some thermal pics of the
> house to identify major problem areas (poorly insulated doors,
> windows, attic, etc.) Kinda like <http://www.predictive-
> maintenance.com/energy.html>
>
> Has anyone done something like that before, and could offer helpful
> tips?
>
> Also, looking for suggestions on an affordable, yet decent (still
> picture) IR camera for this kind of application; best place to buy
> one?
>
> I realize that even a simple such IR camera would cost more than an
> energy audit done by my local utility. But I guess it'd be fun to d-i-
> y, be able to take some before and after pics, etc :)
>
> Cheers
>
There was a rather involved discussion about this here, about a year ago. Do
a google search and you should find some interesting info. The consensus
seemed to be "forget about it - it won't work".
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Posted by Jim Yanik on January 29, 2007, 8:20 pm
>> Looking for some feedback on using an infrared (IR) camera for a
>> d-i-y home energy audit. I'm thinking of taking some thermal pics of
>> the house to identify major problem areas (poorly insulated doors,
>> windows, attic, etc.) Kinda like <http://www.predictive-
>> maintenance.com/energy.html>
>>
>> Has anyone done something like that before, and could offer helpful
>> tips?
>>
>> Also, looking for suggestions on an affordable, yet decent (still
>> picture) IR camera for this kind of application; best place to buy
>> one?
>>
>> I realize that even a simple such IR camera would cost more than an
>> energy audit done by my local utility. But I guess it'd be fun to
>> d-i- y, be able to take some before and after pics, etc :)
>>
>> Cheers
>>
>
>
> There was a rather involved discussion about this here, about a year
> ago. Do a google search and you should find some interesting info. The
> consensus seemed to be "forget about it - it won't work".
>
>
>
Yes,the thermal cameras used for energy audits and police airborne video
respond to long-wave IR(10-12uM),not the near-IR stuff that film and video
cameras respond to.(~1uM)
--
Jim Yanik
jyanik
at
kua.net
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Posted by tbasc@bellsouth.net on January 29, 2007, 9:23 pm
>
>
>
> >> Looking for some feedback on using an infrared (IR) camera for a
> >> d-i-y home energy audit. I'm thinking of taking some thermal pics of
> >> the house to identify major problem areas (poorly insulated doors,
> >> windows, attic, etc.) Kinda like <http://www.predictive-
> >> maintenance.com/energy.html>
>
> >> Has anyone done something like that before, and could offer helpful
> >> tips?
>
> >> Also, looking for suggestions on an affordable, yet decent (still
> >> picture) IR camera for this kind of application; best place to buy
> >> one?
>
> >> I realize that even a simple such IR camera would cost more than an
> >> energy audit done by my local utility. But I guess it'd be fun to
> >> d-i- y, be able to take some before and after pics, etc :)
>
> >> Cheers
>
> > There was a rather involved discussion about this here, about a year
> > ago. Do a google search and you should find some interesting info. The
> > consensus seemed to be "forget about it - it won't work".Yes,the thermal
cameras used for energy audits and police airborne video
> respond to long-wave IR(10-12uM),not the near-IR stuff that film and video
> cameras respond to.(~1uM)
>
> --
> Jim Yanik
> jyanik
> at
> kua.net
Do you know anything about digital cameras & IR response?
TB
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Posted by Jim Yanik on January 30, 2007, 12:53 am
>
>
>>
>>
>>
>> >> Looking for some feedback on using an infrared (IR) camera for a
>> >> d-i-y home energy audit. I'm thinking of taking some thermal pics
>> >> of the house to identify major problem areas (poorly insulated
>> >> doors, windows, attic, etc.) Kinda like <http://www.predictive-
>> >> maintenance.com/energy.html>
>>
>> >> Has anyone done something like that before, and could offer
>> >> helpful tips?
>>
>> >> Also, looking for suggestions on an affordable, yet decent (still
>> >> picture) IR camera for this kind of application; best place to buy
>> >> one?
>>
>> >> I realize that even a simple such IR camera would cost more than
>> >> an energy audit done by my local utility. But I guess it'd be fun
>> >> to d-i- y, be able to take some before and after pics, etc :)
>>
>> >> Cheers
>>
>> > There was a rather involved discussion about this here, about a
>> > year ago. Do a google search and you should find some interesting
>> > info. The consensus seemed to be "forget about it - it won't
>> > work".Yes,the thermal cameras used for energy audits and police
>> > airborne video
>> respond to long-wave IR(10-12uM),not the near-IR stuff that film and
>> video cameras respond to.(~1uM)
>>
>> --
>> Jim Yanik
>> jyanik
>> at
>> kua.net
>
> Do you know anything about digital cameras & IR response?
> TB
>
>
a little. Many digital cameras have a filter to limit their IR
response.(makes for a sharper image in daylight)
the unfiltered IR response usually rolls off above (longer than)1100 nM.
You can check TV remote controls using them,or IR LEDs.
To get the "thermal" IR response (like body heat)either requires cooling
the sensor and/or a different type of sensor(non silicon),or a bolometer
array.
That's a microetched antenna array tuned to certain long IR
wavelengths.Texas Instruments makes them for use in low cost thermal camera
systems,often used by firefighters to see through smoke.They've come out
with handheld versions that cost around $1000,where thermal camera systems
usually cost $50K or more.
--
Jim Yanik
jyanik
at
kua.net
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