Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Home Brewing Beer > DIY Projects > My "Bling" Keezer

Reply
 
LinkBack Thread Tools
Old 10-20-2008, 03:29 PM   #1
TimGrz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Posts: 36
Default My "Bling" Keezer

Here is my Craig List buy. Not the prettiest thing.



I am going to build a bar around it like BrewPastors and Jester369 have done.



This is what counts.



Plenty of room for corny kegs and a my 10# CO2 bottle. Plus more space on the compressor hump.



The compressor is accessed from the left side. It had this cover over it. However I found that side of the chest freezer hot, and the other sides really warm in spots. I had to think there was a more efficient way.



Now some people think that the sides of the chest freezer are designed to be used like a heat-sink. I am not sure I buy into that. It may help in that area, but I personally don’t think that is by design. As much as appliance repair people know-- they are not the engineers designing the freezer. No matter, I have other plans.



So I did a test by removing the cover and placing a small fan on low blowing directly at the compressor. Using my handy laser temperature gun I found that the heat on the compressor itself dropped an amazing 40°. All of the sides of the freezer became cool with only the slightest hint of warm spots. The temp of the freezer also dropped more than 15°.



[CONT...]

__________________
TimGrz is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 03:29 PM   #2
TimGrz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Posts: 36
Default

So I am building my own replacement panel out of ¼” birch paneling. Those are holes for two 120mm computer fans that will blow directly on the compressor itself. The smaller holes below are for the fan speed controls. I am powering it from a old laptop power-supply I dug up in a box of stuff at work. The fans have such little power needs the power-supply barley gets above ambient room temperature.



Conveniently there is a 4” hole in the back of the freezer where the power cords go to the compress. It now doubles as my “exhaust port.”



Fans temporary installed. Using zip ties. The two holes below I covered with black electrical tape (not shown). I have packing tape holding it to the freezer for now.



Yeah, the blue LED’s are for the bling factor. Actually, they were on sale and I figured this was a budget build, and with nobody being able to see it, so what.



Another shot





Lights out bling shots:




[CONT]

__________________

Last edited by TimGrz; 10-20-2008 at 03:35 PM.
TimGrz is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 03:30 PM   #3
TimGrz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Posts: 36
Default

Again, Lights out bling shots:






End result after six hours:



This is temp is monitored at the exhaust port. I would say a 2-3° is difference it is working pretty well. The sides of the freezer are all cool with only the side just above the compressor having any warmth.



Currently the fans are on full blast. It is somewhat loud; I am not sure how loud they will be with the bar around it. I plan on leaving plenty of space so that I can re-use the wood “skin” should this freezer die in the future. I am going to install the fan controls as well as the automagic temperature probe.

BTW, the automagic temperature probe is really just a temperature differential. I attached the probe and it immediately slowed down. I placed a match near it and it immediately sped up. I wonder how slow it can go? I got an ice cube and placed the probe on it…. It sped up. So it really works only if it is outside it’s set range will it speed up, never slow down.

/tg

__________________

Last edited by TimGrz; 10-20-2008 at 03:33 PM.
TimGrz is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 05:34 PM   #4
slimer
Feedback Score: 0 reviews
 
slimer's Avatar
Recipes 
 
Join Date: Oct 2007
Location: Westmont, IL
Posts: 723
Default

Did you ever consider putting one fan so it blows air in and the other so it sucks it out?

__________________
slimer is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 05:40 PM   #5
Brooklyn-Brewtality
Four Beasts Brewery
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Brooklyn-Brewtality's Avatar
Recipes 
 
Join Date: Aug 2008
Location: Brooklyn
Posts: 2,278
Liked 22 Times on 17 Posts
Likes Given: 1

Default

Quote:
Originally Posted by slimer View Post
Did you ever consider putting one fan so it blows air in and the other so it sucks it out?
that would have been my first instinct. It would be easy to test though, shouldn't take a minute to turn one of the fans around and see what effect it has
__________________

Kegged: Berlinerweisse, Dubbel, Galaxy Wheat
Bottled: Golden Strong, Mild, IIPA, Rauch
Fermenting: Saison, Imperial Wheat Stout, Brett Saison, APA, Brett Roggenbier

Brooklyn-Brewtality is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 05:45 PM   #6
TimGrz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Posts: 36
Default

Quote:
Originally Posted by slimer View Post
Did you ever consider putting one fan so it blows air in and the other so it sucks it out?
No, for two reasons.

First if you look at the area that the compressor is in I didn't have a lot of room to choose were to put the fans, the center was about the only option. With the two fans so close the air would just whip around for the most part. The way I have the fans mounted each blows directly over and around one side of the compressor.

Secondly I would have to have had a way to seal up the hole at the back of the freezer where the power cords go in. I really need to take a picture of that and post it. Don't know why I did not to a picture to begin with. And while this would not be difficult I still stand by the air just whipping in/out if they were next to each other.

Now the air coming exiting the hole in the back is quite substantial. I would say it is like a hair drier on medium.

My other thought is maybe I should pull air out of the box instead of pushing it in. All that would be needed is flipping the fans around, and the exhaust hole would become a air intake hole.

/tg
__________________
TimGrz is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 05:49 PM   #7
BrewBeemer
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2006
Location: an island, inside an atoll
Posts: 3,504
Liked 20 Times on 20 Posts
Likes Given: 7

Default

One fan down low blowing in with the other up top pulling the heat out vs side by side. Add a sheetmetal wall to divide the hot from cold air getting mixed up then add some insulation board inside the compressor compartment that should help some more. Overall great findings and results. Idle minds produce no bier.
What brand and model is that unit, I didn't recall seeing anything in the photos. Thanks for sharing.

__________________

Bier Jagdwaffe... Bier 30 zeit.....~~=o&o>..........


Last edited by BrewBeemer; 10-20-2008 at 05:59 PM.
BrewBeemer is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 06:21 PM   #8
TimGrz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Posts: 36
Default

It's a GE. I'd have to get the model number off of it. It was a 14.7 cubic foot.

If you look carefully at this picture you can see that it is pretty tight in there. With the copper tubing and what-not. Building any type of dividers to put in there would be a PITA.



Looking at the picture again, the only way I can see doing this is to have the two fans sucking air out of the space. They would have had to be 80mm to install one above and below each other as two 120mm on top of each other would not fit (I already measured) and directly in front of the compressor. On each side of the compressor a PVC tube leading from the face of the panel to the rear of the compressor. Block the hole in the rear of the freezer.

This would accomplish two things:
1) Draw cool ambient room air from the outside to the rear of the compressor/space and the fans suck the cool air across and around the compressor and back into the room.
2) Add unneeded complexity to this.

The rear exhaust port was just too easy to pass up. Plus having the cool air drawn from a different side of the freezer then the exhaust port is a bonus and will become much more important when the wood "skin" gets built around it. I already thought about getting a PVC elbow to attach it to the exhaust to blow the exhaust air away from the side of the freezer with the panel on it.

/tg

__________________
TimGrz is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 07:19 PM   #9
slimer
Feedback Score: 0 reviews
 
slimer's Avatar
Recipes 
 
Join Date: Oct 2007
Location: Westmont, IL
Posts: 723
Default

Sorry I opened up a can of worms. I just remember in my dorm in college where I had two 12" box fans and the room got cooler when I had one facing in and one facing out next to each other.

__________________
slimer is offline
 
Reply With Quote Quick reply to this message
Old 10-20-2008, 07:52 PM   #10
KiltLifter
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2008
Location: Lafayette, CO
Posts: 171
Liked 9 Times on 4 Posts

Default

The whole freezer system removes heat from the inside and lets it go outside. It does this by compressing the gas which creates heat, then dissipating that heat (in the skin radiators), then sending it inside where it is allowed to expand, which absorbs heat from the inside. A similar thing happens with your compressor in the background of the pics - ever notice that you get very cold air and sometimes ice when you drain it? On the freezer, you will be cooling the compressor better, but I don't think it will drop the temp of the skin radiators very much. BUT, I'm curious, since you have the way cool thermometer, just how much cooler the sides are with and without the fans, you may prove me full of p00p.

Also, if the fans are noisy, run them in series and they'll spin at half speed. Do the same temp test to see if half speed is cooling as well as full (it may be because of the exit impedance of the 4" hole).

__________________
KiltLifter 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
"American" or "Imperial" Oatmeal Stout Recipe: Critiques please! cladinshadows Recipes/Ingredients 4 01-04-2012 10:21 PM
is a "deep Freeze" ok for a keezer??? twst1up Bottling/Kegging 7 07-31-2009 10:23 PM
"Video Surveillance on the Fly" or "Urine trouble now mister!" Tenchiro Debate Forum 1 05-23-2009 06:33 PM
Does my keezer need to "breathe"? D-Boss Equipment/Sanitation 5 12-09-2008 11:21 PM
Does my keezer need to "breathe"? D-Boss Bottling/Kegging 2 12-07-2008 05:13 AM