A Donation.

[bullet2urbrain]

Hey everyone,

Someone has graciously donated a working refrigerator to me, it is an older Over Under refrig with the following components, it works just fine as a fridge but i'd rather start small and build a phase unit with it. I am going to be taking Thermodynamics next quarter @ school and what better way than to get my hands on some basics than with a small Phase unit.

anyway here is what is contained in the belly of the beast.

http://img130.imageshack.us/img130/2109/dscn0108xr9.th.jpg (http://img130.imageshack.us/my.php?image=dscn0108xr9.jpg)

i have other pics but Imageshack is being finnicky.

it is currently gased with R134a as is standard, i presume some of my Professors for Thermo will be able to get more "fun" gases and provide me with some tools. just wondering if i should take all this out and start a phase or hope for something better....

Thanks guys


PS: LardArse or someone can you please fix the pictures in your Refrigeration basics guide. I tried to read but the links are broken

[_HL4E_HalfLife_]

Haha i got the exact same compressor,condensor and fan as whats in ur pic lol what a quinceadince.

The compressors in these fridges arn't that powerful but it might be good enough for a GPU otherwise i would get something a bit larger.

[DetroitAC]

i presume some of my Professors for Thermo will be able to get more "fun" gases and provide me with some tools. just wondering if i should take all this out and start a phase or hope for something better....



Good luck! In my thermo we spent maybe 2 days on the refrigeration cycle (reversed Rankine). Majority of the course will be the laws of thermo, and some VERY simple analysis of Rankine, Brayton, Stirling, etc. I think you give professors too much credit, if I'm wrong...you're in a good school!

[bullet2urbrain]

Good luck! In my thermo we spent maybe 2 days on the refrigeration cycle (reversed Rankine). Majority of the course will be the laws of thermo, and some VERY simple analysis of Rankine, Brayton, Stirling, etc. I think you give professors too much credit, if I'm wrong...you're in a good school!

I'm in a school where engineers pretty much are top dog. and the professors are generally very open minded provided you show them that you have done your part of the research.

if i just walked in and was like " plop heres some parts can you build me a Phase unit" they'd be like "lol get lost EE Major" but if i show them im ready to do my part to get it done i think they would be willing to help.

Half Life: what type of load temps will this hold with say something like 100Watt Heat load??? im more interested in building this becuase of the experience not to -100*C my CPU... im sure i'll find a use for cooling something to -35* or so :D

friends and beer seem to be 2 things that come to mind... :D


EDIT FOR MORE INFO: so if i rip everything out of that fridge, there are 2 big questions that come to mind... what more do i need? I obviously need a block of some kind and a cap tube made? and then i will need some more R134a... is this close or am i much more of a n00b than i think. and the second being, can it handle more than R134a?

[n00b 0f l337]

-35C load is a far shot away I'd say. Thats almost normal temperatures for other single stages with much more powerful compressors and condensers.
You may be aiming towards 0C at evap load.

[bullet2urbrain]

0*C = fine by me, im really interested in the process of building it... plus i've learned some neat things possible witha MicroController that i may want to try...

similar to a cruise control of sorts... im sure its been done before but i wanna try it.

any answer's to the questions above NoL?

[[486]]

I use that same one as a vac. pump! and i'm sure it would work with r 22 [or r-290] but wont last long, i was using it as a makeshift recovery device and the head pressure got to 400 real quick [forgot to take valve core out of discharge] mine on the internet said it was like 1/10 hp or something