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General Category => Equipment and Software => Topic started by: shawnx86 on November 21, 2009, 05:06:53 PM

Title: Light bulb in fridge to control temp.
Post by: shawnx86 on November 21, 2009, 05:06:53 PM
I have converted my freezer using this as a guide. http://www.oregonbrewcrew.com/freezer/freezer.html (http://www.oregonbrewcrew.com/freezer/freezer.html) I noticed that he is putting a lightbulb in the freezed to adjust the temp. Will this skunk the beer? Would a red reptile infrared heat lamp work better?

Thanks for your reply.
Title: Re: Light bulb in fridge to control temp.
Post by: denny on November 21, 2009, 05:28:20 PM
Incandescent light will not skunk beer.
Title: Re: Light bulb in fridge to control temp.
Post by: a10t2 on November 21, 2009, 06:07:39 PM
Well... incandescent light will not skunk beer *as quickly*. The tail of a tungsten spectrum extends well into the UV band.

I just found this really neat site: http://www.gelighting.com/na/business_lighting/education_resources/learn_about_light/distribution_curves.htm
Title: Re: Light bulb in fridge to control temp.
Post by: denny on November 21, 2009, 06:11:19 PM
Thanks for the correction!
Title: Re: Light bulb in fridge to control temp.
Post by: MDixon on November 21, 2009, 07:15:56 PM
An incandescent bulb mainly puts off heat and has NEVER skunked a beer in a carboy or bottle for me with at least 10 years of using it to heat the space.
Title: Re: Light bulb in fridge to control temp.
Post by: denny on November 21, 2009, 08:02:53 PM
But then, given the beers you usually make, how would yo know???  ;)
Title: Re: Light bulb in fridge to control temp.
Post by: hopfenundmalz on November 21, 2009, 08:32:41 PM
I use a light bulb to help heat the fermenting beer in the garage during winter.

No skunking.

But did I say that the beer is in a SS conical?   :D

Title: Re: Light bulb in fridge to control temp.
Post by: MDixon on November 21, 2009, 08:36:53 PM
But then, given the beers you usually make, how would yo know???  ;)

(http://beermapping.com/forum/Smileys/smiles/emot-rimshot.gif)
Title: Re: Light bulb in fridge to control temp.
Post by: Thirsty_Monk on November 21, 2009, 08:56:15 PM
I wrap aluminum foil around the bulb.
It allows heat to be transmitted without the light.
Works for me  ;) 
Title: Re: Light bulb in fridge to control temp.
Post by: dhacker on November 22, 2009, 12:24:35 PM
I try to protect my beer from as much light as possible, no matter what the source, as cheap insurance. The foil over the bulb seems like a good idea, even a dark towel wrapped around the carboy would work.

Myself? I use an old water bed heater pad in the ferment chamber during the cold months and flip the switch on the Johnson A419 to heat mode. Works like a charm!
Title: Re: Light bulb in fridge to control temp.
Post by: Kaiser on November 22, 2009, 12:57:38 PM
I wrap aluminum foil around the bulb.
It allows heat to be transmitted without the light.
Works for me  ;) 

I did that once to make a reflector for a light bulb. The boil touched the socket and was electrically charged. It was humming all though my arm and that was in Germany where we have 220V. I'm happy that I'm alive.

To heat my chest freezer I now use one of the energy saving bulbs (13W) and put 2 brown paper bags around it. Eventually I want to put some sort of heating mat at the bottom. I think that this will make for a more even heat distribution.

Kai

Title: Re: Light bulb in fridge to control temp.
Post by: Thirsty_Monk on November 23, 2009, 12:08:17 AM
I did that once to make a reflector for a light bulb. The boil touched the socket and was electrically charged. It was humming all though my arm and that was in Germany where we have 220V. I'm happy that I'm alive.

Yes electricity can be dangerous.
Use aluminum foil on glass part only. It is pretty inefficient to heat this way.
There are ceramic heaters that screw into light bulb socket.
You can find these heaters in pet shops but they are around $30.
Heating pad like FermWrap is also a good option but they are around $35.
Title: Re: Light bulb in fridge to control temp.
Post by: slimsparty on November 25, 2009, 04:52:42 PM
I use a 40watt bulb in my lagershed.  That is a old concrete walkout that ends under my deck now.  I boxed it with ridged styrofoam and put in a trouble lite.  Seems to hold the ambient right about 40degrees.

i lagered in buckets and wasn't worried about the light.
Title: Re: Light bulb in fridge to control temp.
Post by: bonjour on November 25, 2009, 06:10:48 PM
I use a light bulb in a freezer and ferment in buckets, never had a problem.

Fred
Title: Re: Light bulb in fridge to control temp.
Post by: karlh on December 09, 2009, 08:39:10 PM
I have done the same with a low watt bulb in the temp controlled chest freezer (in the unheated garage) during the winter months.  I usually ferment in steel or plastic, and have not have any skunking issues.  Given that the chest freezer is well insulated a very small source such as a night light or 15 watt lamp is enough. 
Title: Re: Light bulb in fridge to control temp.
Post by: yugamrap on December 16, 2009, 06:48:56 PM
I have done the same with a low watt bulb in the temp controlled chest freezer (in the unheated garage) during the winter months.  I usually ferment in steel or plastic, and have not have any skunking issues.  Given that the chest freezer is well insulated a very small source such as a night light or 15 watt lamp is enough. 
+1  I do the same thing to keep my fermenting fridge and my serving fridge (both are in my unheated garage) from getting too cold in the winter.  I use 15-watt bulbs in reading lamps in the bottom of the fridges.  This provides just enough heat that the temperature control will cycle the fridge to run occasionally.
Title: Re: Light bulb in fridge to control temp.
Post by: abraxas on December 19, 2009, 01:15:39 AM
I'd recommend making a "heat bomb".  Just put a submersible fish tank heater in a plastic bottle of water and seal it with some high temp silicon (or don't).

For less than $30 you could get one with a built in adjustable thermostat.
Title: Re: Light bulb in fridge to control temp.
Post by: abraxas on December 19, 2009, 01:18:27 AM
I wonder if you could use a high temp spray paint on a bulb like grill or exhaust paint.  Might cause some uneven expansion and ultimately shatter, but you never know till you try.  I'd probably only try it in a GFCI receptacle though...
Title: Re: Light bulb in fridge to control temp.
Post by: Thirsty_Monk on December 19, 2009, 03:04:38 AM
Picture is worth 1000 words.
I am using 40W light bulb wrapped in aluminum foil.

Image is here:
http://www.homebrewtalk.com/gallery/data/1/medium/img_02452.jpg
Title: Re: Light bulb in fridge to control temp.
Post by: Brew.Drink.Repeat. on December 29, 2009, 09:34:26 PM
I use a dual-stage temp controller for my fridge; the cool side is for the fridge (obviously), and for the hot side I picked up a small (well, tiny actually)  space heater at Target for $10. Works like a charm.
Title: Re: Light bulb in fridge to control temp.
Post by: riverrat on December 30, 2009, 02:08:33 PM
I wonder if you could use a high temp spray paint on a bulb like grill or exhaust paint.  Might cause some uneven expansion and ultimately shatter, but you never know till you try.  I'd probably only try it in a GFCI receptacle though...

I tried this already.  It works well, but the bulbs seem to burn out significantly faster, and it's harder to tell when they burn out, as you can't see any light coming out of the fixture whether it's on or not.
Title: Re: Light bulb in fridge to control temp.
Post by: Kaiser on December 31, 2009, 04:27:54 PM
Image is here:
http://www.homebrewtalk.com/gallery/data/1/medium/img_02452.jpg

Why does this come up as "HOMEBREWTALK.COM NO HOTLINKING" ?

Kai
Title: Re: Light bulb in fridge to control temp.
Post by: Hokerer on December 31, 2009, 04:50:42 PM
Why does this come up as "HOMEBREWTALK.COM NO HOTLINKING" ?

Kai

Kai, a lot of web sites don't allow "hotlinking".  Hotlinking means a link that points directly at (usually) a picture.  They don't want people to do that because they'd rather that you go to the actual site (not just the picture).  That way you have to look at their site and any ads and such that might go along with that.
Title: Re: Light bulb in fridge to control temp.
Post by: Kaiser on December 31, 2009, 05:12:13 PM
Why does this come up as "HOMEBREWTALK.COM NO HOTLINKING" ?

Kai, a lot of web sites don't allow "hotlinking".  Hotlinking means a link that points directly at (usually) a picture.  They don't want people to do that because they'd rather that you go to the actual site (not just the picture).  That way you have to look at their site and any ads and such that might go along with that.

I have a lot of support and friends over there at HBT.com but there are many things that annoy me. This is one more.

Kai
Title: Re: Light bulb in fridge to control temp.
Post by: Thirsty_Monk on December 31, 2009, 05:21:39 PM
Image is here:
http://www.homebrewtalk.com/gallery/data/1/medium/img_02452.jpg

Why does this come up as "HOMEBREWTALK.COM NO HOTLINKING" ?

Kai
I thought that when I post direct link to it (instead of inbedding) it would work.
Try right click on link and open in new tab.
Let me know if it works.
If not I would have to get some service as photobucket or picasa...
Title: Re: Light bulb in fridge to control temp.
Post by: Kaiser on December 31, 2009, 05:34:17 PM
Try right click on link and open in new tab.
Let me know if it works.
If not I would have to get some service as photobucket or picasa...

You need to copy the link and paste it into a browser. If you just click it, even opening it in a new window, the "referrer" information is retained and you'll get the NO HOTLINKING message.

I still think it is very annoying.

But I see the problem with hotlinking just images. But just posting the image and not giving a source you might technially be violating copyright. I do encurage others to use my stuff for non commercial purposes (e.g. forum posts) but the source needs to be mentioned.

If you post a lot outside of HBT and want to show images you may have to host them somewhere else. Some forums do allow image attachments, which is nice, but not all do. They might be a disk space or admin hassle.

Kai
Title: Re: Light bulb in fridge to control temp.
Post by: Thirsty_Monk on December 31, 2009, 07:07:12 PM
O.K.
Let's try it now:
(http://lh5.ggpht.com/_58SufWZLFuc/SzzyLIo4LII/AAAAAAAAASU/sgqsb1h-Za0/s640/crw_2907.jpg)
I am actually racking here but the heat source is in the back.
Title: Re: Light bulb in fridge to control temp.
Post by: dontblake on January 23, 2010, 12:18:14 AM
Just don't use a high wattage halogen light.
See this thread from the BN  (hoping that hotlinking works)

http://www.thebrewingnetwork.com/forum/viewtopic.php?f=4&t=18695

This guys fridge is seriously messed up!
Title: Re: Light bulb in fridge to control temp.
Post by: Thirsty_Monk on January 23, 2010, 02:26:44 AM
Just don't use a high wattage halogen light.
See this thread from the BN  (hoping that hotlinking works)

http://www.thebrewingnetwork.com/forum/viewtopic.php?f=4&t=18695

This guys fridge is seriously messed up!
All I can say is WOW.
Glad nothing rally bad happened.