Where To Look For Imformation On Phase Change/cascades And Any Other Question

[bowman1964]

i am making this a sticky.

now anybody can put GOOD links in here

for information on how too build a system,

on where to buy parts,

and any other question that is asked on a daily basis so new guys can find it fast..

still the search engine works great if it was used.

but maybe this will be easier.

[Hardass]

Captcascade,s Help & Stuff.
http://www.xtremesystems.org/forums/...threadid=19517

[water_cooler 20]

Info about water chilling
http://wc101.com/guides/refridgeration/

Good Insulation how to
http://www.vr-zone.com.sg/?i=224&s=1

Bowman's direct-die how to
http://phase-change.com/index.php?ac...s&id=23&page=1

Bowman's Insulation how to
http://phase-change.com/index.php?ac...s&id=25&page=1

Dabit's website contains info on his cascade and water chiller
http://www.icecoldcomputing.com/index.php

Brazing how to
http://www.jwharris.com/jwref/procs/

Tool and parts
www.rparts.com

more tools and parts
http://www.johnstonesupply.com

[Pandrone]

Some info about refrigerants (boilingpoints etc): http://www.solvay-fluor.com/

[captaincascade]

good idea bowman. thanks hardass, i try.



guide on insulating your pc

http://www.vr-zone.com/?i=230&s=1



heres a good one on compressors as vacuum pumps.

http://www.belljar.net/refrig.htm


this site has alot of good info on general refrigeration and troubleshooting
http://www.hvacwebtech.com/HVACTechNotes.htm________


hers stuff on 2 stage compressors



http://www.xtremesystems.org/forums/...threadid=22720



heres some stuff on different refigerants



http://www.xtremesystems.org/forums/...threadid=23166



here is the infamous "dangers of a cascade system thread" a good warning to those who think they migh want to try


http://www.xtremesystems.org/forums/...threadid=22792


heres a thread on condensing pressures and efects on temperature


http://www.xtremesystems.org/forums/...threadid=22496




please feel free to edit if you think i got carried away. ive been waiting for this thread.



sorry about all the screwed up links, im lame. i forgot about it

[captaincascade]

oh my god, do you know how many hours i put into that. let me guess, theres nothing we can do a? did i screw up somehow?

man that really really sux:-(

[Teus]

(btw thanx for fixing the links)

[DaBit]

As sais before, my website contains the progress description of my cascade.

Project 210K: R507 high stage, R410A low stage

Project 173K (using R507 high, R1150/ethylene low) will be started soon

[Gary Lloyd]

What I consider to be the best first project for a phase change noob. Transform a window A/C into a chiller, then add a piercing valve and start learning (by reading and doing) about refrigeration.

http://www.xtremesystems.org/forums/...threadid=22968

And here's a good starting place for learning refrigeration theory:

http://www.refrigerationbasics.com

Look for the "Samples" button.

And then if you're really serious:

http://www.techmethod.com

Look for a book called "TECH Method Lesson Series: ACR Trouble Shooting".

[PMM]

captaincascade still lots of dud links at the top of the list
for info.

[Gary Lloyd]

Here's link for insulation:

http://www.armaflex.com/

[Gleep]

I thought I'd fix captaincascade's post since it has a lot of good links.


captaincascade's post

good idea bowman. thanks hardass, i try.


stuff from people that are building cascade systems
pc ice

http://www.xtremesystems.org/forums/...threadid=25057



piping and recomended oil per refrigerant.

Couldn't find this one.
http://www.xtremesystems.org/forums...25&pagenumber=1




parts

seal string
http://www.xtremesystems.org/forums/...threadid=25010


questions on subcooling

http://www.xtremesystems.org/forums/...threadid=24918



thread on charging refrigerant

http://www.xtremesystems.org/forums/...threadid=24797


guide on insulating your pc

http://www.vr-zone.com/?i=230&s=1


thread on upgrading your mach 1 or 2 from 134 to 404a,507

http://www.xtremesystems.org/forums/...threadid=24796


__________die electric grease

http://www.xtremesystems.org/forums/...threadid=25041




insulating gpu

http://www.xtremesystems.org/forums/...threadid=22957



thread on basic refrigeration

http://www.xtremesystems.org/forums/...threadid=24471


thread on autocascades

http://www.xtremesystems.org/forums/...threadid=24035


heres a good one on compressors as vacuum pumps.

http://www.belljar.net/refrig.htm


this site has alot of good info on general refrigeration and troubleshooting
http://www.hvacwebtech.com/HVACTechNotes.htm


hers stuff on 2 stage compressors



http://www.xtremesystems.org/forums/...threadid=22720



heres some stuff on different refigerants



http://www.xtremesystems.org/forums/...threadid=23166



here is the infamous "dangers of a cascade system thread" a good warning to those who think they migh want to try


http://www.xtremesystems.org/forums/...threadid=22792


heres a thread on condensing pressures and efects on temperature


http://www.xtremesystems.org/forums/...threadid=22496




please feel free to edit if you think i got carried away. ive been waiting for this thread.


__________________

[nas]

cpu W output for captube calc

[Russell_hq]

Here is a PT chart for a variety of refrigerants:

PT Chart

Also i think it would be a good idea if we list what cap tube sizes we use/recommend for the different refrigerants and setups.

I'll start. Im using propane with 180" of 0.031" cap tube on a direct die setup. Seems to work for me

Here is a quote from Gary on cap tubes:

You will need about 7 feet of .026 (.6mm), 10 feet of .028 (.7mm) or 16 feet of .031 (.8mm). A cap tube is stable between 5-16 feet, so .036 (.9mm) is not a good idea, and best would be in the center of the stable range. In other words, 10 feet of .028 would be best.

[Gary Lloyd]

Here is a quote from Gary on cap tubes:

You will need about 7 feet of .026 (.6mm), 10 feet of .028 (.7mm) or 16 feet of .031 (.8mm). A cap tube is stable between 5-16 feet, so .036 (.9mm) is not a good idea, and best would be in the center of the stable range. In other words, 10 feet of .028 would be best.

This is assuming about 150 watts of heat load and R404A/R507. A higher heat load needs less restrictive cap tube and vice versa. A lower pressure refrigerant also needs less restrictive cap tube, and vice versa. In order to get the right cap tube size, we need to know the heat load and the refrigerant, and to a lesser extent the compressor size.

[Russell_hq]

Thanks for adding the extra info Gary, I got a bit excited and just pasted that stuff in there.

I'd like to add some links for refrigerant properties calculators:

Forane

Nice and simple just give a temp or pressure, gives saturated values and superheat values. Gives enthalpies and a bunch of other stuff.
Forane

Coolpack Refrigeration Tools

Draws charts and does cycle calculations and has alot more refrigerants than Forane. looks nice too
CoolPack Refrigeration Utillities

[Russell_hq]

I copied this from phase-change.com, I'm sure its here aswell somewhere but quicker to find over there. Its a quote from Gary(who else)

When I check out a system, I am monitoring a minimum of 8 temperatures, and sometimes as many as 12.

For those who may be interested, here is what is needed:

Low side:

CPU temp
Evap temp
SST (saturated suction temp) or low side pressure (and type of refrigerant)
Suction line temp near compressor inlet

High side:

Condenser air in temp
Condenser air out temp
SCT (saturated cond temp) or high side pressure (and type of refrigerant)
Liquid line temp near condenser outlet

It's not a one time deal. Each time you change something, the entire list needs to be reported again.

That's what it takes to do it right.

And if you haven't insulated yet, don't bother. The system should not even be started until it is insulated.

Thought it might be worth stickying this info, as I know I am always looking for it.

[Gleep]

I found some pressure/temp charts for some of the refrigerants we are using that go down to -150F/-140F.

R134A

R404A (aka Suva HP62)

R410A

R507

[pythagoras]

Nice resource on fundamentals of refrigeration:

http://uk.refrignet.danfoss.com/SW/U...b/indexOld.htm

Regards

John.

[p4z1f1st]

has anybody an "how-to" for building a pipe to run 2 Evaps on one Cascade ?

[p4z1f1st]

i know, but nobody posted a link, which anwser my question....so, now i could open a new thread or ask my question, someone answers and posts a link with a how-to, which fulfills the sense of this thread