Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Home Brewing Beer > Bottling/Kegging > Blacklight in refrigerator

Reply
 
LinkBack Thread Tools
Old 04-06-2011, 01:00 AM   #1
TheBroonery
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2010
Location: Gaithersburg, MD
Posts: 370
Liked 5 Times on 4 Posts
Likes Given: 3

Default Blacklight in refrigerator

Today I got the idea to replace the light in my beer fridge with an incandescent blacklight. Hooked it up and it looks pretty sweet.

My queston is, Should I or the Clear Carboy of Lager in there be worried about light from a blacklight affecting the beer the way sunlight and fluorescent light do?

__________________
TheBroonery is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 01:07 AM   #2
Yuri_Rage
Gritty.
HBT_MODERATOR.png
Feedback Score: 0 reviews
 
Yuri_Rage's Avatar
Recipes 
 
Join Date: Jul 2006
Location: Southwest
Posts: 13,910
Liked 606 Times on 376 Posts
Likes Given: 54

Default

A black light is likely worse for your beer than most other household light sources. "Skunking" is caused by biochemical reactions that are accelerated through exposure to UV light...exactly the kind of radiation emitted by a black light.

__________________
Homebrewed Blog..........YouTube Channel .......... Shirts, posters, etc
Yuri_Rage is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 02:01 AM   #3
TheBroonery
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2010
Location: Gaithersburg, MD
Posts: 370
Liked 5 Times on 4 Posts
Likes Given: 3

Default

Hmm.. so mabye not wise when I have a clear glass carboy in there, but would the brown glass in an ordinary beer bottle block the wavelength? Also, considering that the light is only on when the door is open, perhaps a total of 1 or 2 minutes per 24-hour cycle, should I leave it in or take it out?

__________________
TheBroonery is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 02:05 AM   #4
beninan
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: Bangor, Maine
Posts: 995
Liked 13 Times on 13 Posts

Default

Though it may look nice, I would take it out. Even brown bottles do not block 100% of UV rays.

I'm not sure if the specifics of my numbers are right, but I remember reading somewhere that it only takes minutes in direct sunlight for beer in a clear glass to start to show signs of "skunking".

__________________

"Stop giving me credit for those stupid quotes! For that last time it wasn't me! STFU NOOB!" <-- Benjamin Franklin

beninan is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 02:18 AM   #5
Flywheel
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2010
Location: pig's eye
Posts: 384
Liked 2 Times on 2 Posts
Likes Given: 3

Default

http://www.google.com/url?sa=t&source=web&cd=4&ved=0CCkQFjAD&url=http%3A %2F%2Fwww.brewangels.com%2FBeerformation%2Fbbrskun king.pdf&rct=j&q=basic%20brewing%20skunking%20beer %20table&ei=5cubTc_5DpCw0QHh3OTjAg&usg=AFQjCNG4R7K rS4fAopf_KRea92Wj9wr6iA&sig2=7YkFsCEZ0Xgy8_Hkfk-teA&cad=rja

If I recall correctly UVA light has a wavelength of 200-400 ... looks like the brown bottles might be ok, but not the clear carboy. But, don't take my word for it.
__________________
Keg1: IRA
Keg2: StarSan
Keg3: British Bitter
Keg4: StarSan
Bottle: Belgian Strong Golden Ale
Secondary: 68ºF air
Primary1: Cider
Primary2: Nothing
Planned: hmmmmmm

You mean a woman of your culture and money and beauty and money and wealth and money would, would marry that imposter?

Poison for email spiders
Flywheel is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 02:23 AM   #6
TheBroonery
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2010
Location: Gaithersburg, MD
Posts: 370
Liked 5 Times on 4 Posts
Likes Given: 3

Default

I threw a T-shirt over the carboy - what do you guys think?

dscn3061.jpg  
__________________
TheBroonery is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 02:25 AM   #7
Yuri_Rage
Gritty.
HBT_MODERATOR.png
Feedback Score: 0 reviews
 
Yuri_Rage's Avatar
Recipes 
 
Join Date: Jul 2006
Location: Southwest
Posts: 13,910
Liked 606 Times on 376 Posts
Likes Given: 54

Default

Did some VERY light reading.

http://en.wikipedia.org/wiki/Black_light

If Wikipedia is to be trusted (and it's not...but this info passes the common sense test):

Quote:
A black light may also be formed by simply using Wood's glass as the envelope for a common incandescent bulb. This was the method that was used to create the very first black light sources. Although it remains a cheaper alternative to fluorescent tubes, it is exceptionally inefficient at producing UV light since most of the light emitted by the filament is visible light which must be blocked. Due to its black body spectrum, an incandescent light radiates less than 0.1% of its energy as UV light. Incandescent UV bulbs, due to the necessary absorption of the visible light, become very hot during use. This heat is, in fact, encouraged in such bulbs, since a hotter filament increases the proportion of UVA in the black-body radiation emitted.
So, an incandescent black light may actually be LESS harmful to your beer than a regular white lightbulb due to filtering. However, since the fridge is solely for beer, how about removing the interior light altogether? If you like black lights, do something funky to the exterior of the fridge and mount the incandescent black light near it.
__________________
Homebrewed Blog..........YouTube Channel .......... Shirts, posters, etc
Yuri_Rage is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 02:29 AM   #8
brum
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Bloomington/Indy, IN
Posts: 107
Liked 2 Times on 2 Posts
Likes Given: 10

Default

Believe it or not, the wavelengths of UV radiation are so small that they will go straight through the small cotton weaves in the Tshirt.

Plus radiation penetrates through things anyways/creates scattering. Ok I'm done. Just feeling very informed after actually reading ahead in my medical physics class haha

__________________

Originally Posted by MyNameIsPaul

We make beer in buckets with toilet parts and coolers, this might not be the best place for you.

brum is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 02:33 AM   #9
TheBroonery
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2010
Location: Gaithersburg, MD
Posts: 370
Liked 5 Times on 4 Posts
Likes Given: 3

Default

Quote:
Originally Posted by Yuri_Rage View Post
Did some VERY light reading.

http://en.wikipedia.org/wiki/Black_light

If Wikipedia is to be trusted (and it's not...but this info passes the common sense test):


So, an incandescent black light may actually be LESS harmful to your beer than a regular white lightbulb due to filtering. However, since the fridge is solely for beer, how about removing the interior light altogether? If you like black lights, do something funky to the exterior of the fridge and mount the incandescent black light near it.
Ha! I was just looking at that wikipedia page too! The fridge had 4 bulbs in the main compartment to begin with, but since dedicating it to beer, I had unscrewed all but one of the bulbs which gave plenty of light. If I put the blacklight bulb outside the fridge it would expose the other carboy.. plus I don't like how hot the thing gets - I measured over 500 degrees with a laser thermometer after it was on for just a few minutes before I put in the fridge. At least the fridge keeps it cool!
__________________
TheBroonery is offline
 
Reply With Quote Quick reply to this message
Old 04-06-2011, 02:36 AM   #10
TheBroonery
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2010
Location: Gaithersburg, MD
Posts: 370
Liked 5 Times on 4 Posts
Likes Given: 3

Default

Quote:
Originally Posted by brum View Post
Believe it or not, the wavelengths of UV radiation are so small that they will go straight through the small cotton weaves in the Tshirt.
Then how do you explain THIS!?!

__________________
TheBroonery is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Compact Refrigerator RedDragon Bottling/Kegging 3 07-06-2009 11:13 PM
Refrigerator getting too cold pjk49202 Bottling/Kegging 11 06-19-2009 02:55 PM
Refrigerator not cooling... CollinsBrew Bottling/Kegging 4 05-05-2009 01:26 PM
Refrigerator big enough? pjk49202 Bottling/Kegging 4 03-24-2009 04:02 PM
Keg Refrigerator RookieBrew Bottling/Kegging 7 05-31-2006 03:51 PM



Newest Threads