water chiller in a day

[EvoCarlos]

hello again
right so i have planed to make a water chiller and now i.ve got some bit together to build it.
Not sure how its giong to work yet but we will see my goal is to have it up and running today i have already started work on it and posting as i go on have a look and let me know what you think.
(oh and i dont want any posts with You can't do it like that):cord:
well i have to say i.am doing it like that i mean its not like its rocket since lol :rofl::cord::shrug: :up: :up: :up:

parts
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller002.jpg

oil check and filter back in mmmm fizzy but dont drink:shocked:
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Image124.jpg

service vavle fitted
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Image129.jpg

the making of the water HX
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller003.jpg

test fit rad with HX
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller004.jpg

renforced HX floted rad with wire then brazed in place
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller005.jpg

start of sution line
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller006.jpg

more to folow just having a break 4 10mins and some grub got to go and take my air compressor apart next to make a better seal on the intake for vaccing
back soon....

[one_servant]

That's a great collection of goodies you've got there! Good use of that pipe bender too...I can tell this'll be a very clean build.

[n00b 0f l337]

Nice Water HX, hopefully theres good transfer through those fins! I don't see a condenser in that pile though....

[EvoCarlos]

:up:That's a great collection of goodies you've got there! Good use of that pipe bender too...I can tell this'll be a very clean build.
thanks mate i was hoping it would look tidy :up:
Nice Water HX, hopefully theres good transfer through those fins! I don't see a condenser in that pile though....
hey nol yeah the condenser was in the house and was to lazy to fetch the heat trasfer will be good you will see what im doing in this next lot of images :)

right i made a sucsesful port for my air compressor to convert it in to a vac pump had to take the head off and rotate it 180% but it works i rig'd the gages up so i could test the gages wernt leaking look see 29.x hg

http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller0002.jpg
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller0022.jpg
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller0052.jpg
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller0062.jpg

right the heat trasfer part yes nol this is the bit you were thinking of :up:

water box
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller007.jpg
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller008.jpg
its not finish'd yet but want to get the unit working as the box is later :)

bit more work on the suction line fix'x the HX to the suction line the whole HX will be in water box with frezzer pack fluid to give the compressor more off time
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller009.jpg
i'll get cracking and get it done only came in for the condencer and food :up:

[sjg0]

EvoCarlos how did you cut that sheet metal?

[Bitemarks666]

looks like he use the angle grinder which is the real ghetto way. oh yeah

[EvoCarlos]

EvoCarlos how did you cut that sheet metal?
yep i just used a grinder to cut a groove the folded :)

looks like he use the angle grinder which is the real ghetto way. oh yeah

YOU NO THAT S$&T'S HARDCORE LOL:up:

right all build't some of the final images

condencer
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller010.jpg
filter
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller012.jpg
2m of 0.031 cap
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller011.jpg
system under vac getto style lol
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller013.jpg
birds eye view
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller014.jpg

sorry for the poor image qualty in the last few it is low light out side now so the pics are gay

the unit is under vac right now going to leave it 10 mins and get some gas in there see what see can do
:up::up:

[teyber]

what welder did you weld that with?

nice work :)

[EvoCarlos]

what welder did you weld that with?

nice work :)

its a clark mig 100et turbo had to get the galv off the steel to get it to weld :)

[EvoCarlos]

right ive done it water chiller in a day have been out side playing with it till now so it was finished well be for 12 midnight :up:

here the image you all wanted to see ice ice BABY lol
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller017.jpg

http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller016.jpg

still working on the charge but pressures seem good
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller020.jpg

2gallon bucket of water went down to 9c after 15-20mins or so BIG water ice slug YEAH!!!!!!!!
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller021.jpg
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller022.jpg

right then im off back to my hloe for a bit i'll put up some images of the enclosure soon thanks for looking

CARL........ :up:

[loonym]

That's not a bad way to bend sheet metal for the home hobbyist since getting stuff bent can be expensive. Takes a good eye and a steady hand, good work. :up:

[n00b 0f l337]

Wait you only vacuumed for 10 minutes?

[EvoCarlos]

Wait you only vacuumed for 10 minutes?

nope the unit was under vac for 30min with a 9.5cfm pump the gages were bouncing of the stop pins at the bottom the way i see it a normal vacpump is 1.5cfm and mine is 9.5cfm so no long vacing was necessary well it never is runing vac over night is point less if theres any crap in there the filter will get it thats what is for right.

[n00b 0f l337]

Normally, you do whats called a triple evacuation. You vac down to a set micron level, add an inert gas, repeat, three times. (Last time don't add the inert gas ;)). I bet you still have moisture and such in your system. The filter will remove basically a single drop of water, and remove very little as far as particulates go. It's rated to remove any excess from a triple evacuation.

EDIT: Your way undercharged right now too. What refrigerant are you using?

[Postal Dude]

NoL, what makes you say he's under charged? not questioning your knowledge, jus wondering what makes you say it :)

[n00b 0f l337]

First off it would seem he's running r134a, he's in vacuum, with a very low high side pressure, he's running a captubeas well, so its not the result of a TXV. He has no ice on his return to the compressor, and it seems like 15-20 mins for a small pale of liquid with a high surface area heat exchanger should be much lower then 9C. That entire area around those pipes should turn to solid ice in 4-5 minutes. He's going to want to get up towards 10-15psi low side pressure to really have a load held.

[Postal Dude]

Yeah he's using 134a. Im sure he'll probably add some more reading this. So hopefully it'll get sorted out. I think he just wanted some ice formed cus it was really late when he charged it.

[Xeon th MG Pony]

nope the unit was under vac for 30min with a 9.5cfm pump the gages were bouncing of the stop pins at the bottom the way i see it a normal vacpump is 1.5cfm and mine is 9.5cfm so no long vacing was necessary well it never is runing vac over night is point less if theres any crap in there the filter will get it thats what is for right.

using an air compressor you wont have even got down to 12,000 microns, as in you did absolutely nothing in terms of vacuum, just rarefied the air. you need to remove the moisture or you'll have lovely acidic oil in no time.

[n00b 0f l337]

using an air compressor you wont have even got down to 12,000 microns, as in you did absolutely nothing in terms of vacuum, just rarefied the air. you need to remove the moisture or you'll have lovely acidic oil in no time.
If it is a sealed manifold, like his, it is most likely perfectly possible as a single stage vacuum pump. Surely not as good as a 2 stage, and he's got alot MORE vacuuming to do, even with that 9.5cfm rating, but it should work.

[Postal Dude]

If doing a triple evac. How long should the unit be under vac for before puttin gas back in?

Vac out for x minutes

add squirt of r134a

vac out for x minutes

add squirt of r134a

vac out for x minutes

charge with r134a


someone kindly fill in the x's?


Also, i have read the guide and understand about squirting in high side, and vaccing out of low side, and vice versa. To drag moisture out of cap tube

[n00b 0f l337]

Depends on your vacuum pump, with yours I'd honestly do 6-8 hours for each vac.
And I wouldnt add a squirt of r134a, this is why you want to have nitrogen. Else your venting refrigerant.

[EvoCarlos]

hey hey i knew this would happen you guys can leave it can you alway saying no thats not right..:down:

using an air compressor you wont have even got down to 12,000 microns, as in you did absolutely nothing in terms of vacuum, just rarefied the air. you need to remove the moisture or you'll have lovely acidic oil in no time.

question do you know why a vac pump has oil in it? oh and as i said at the start i'll do it how choose......... i said that i did not want posts like yours here

Normally, you do whats called a triple evacuation. You vac down to a set micron level, add an inert gas, repeat, three times. (Last time don't add the inert gas ;)). I bet you still have moisture and such in your system. The filter will remove basically a single drop of water, and remove very little as far as particulates go. It's rated to remove any excess from a triple evacuation.

EDIT: Your way undercharged right now too. What refrigerant are you using?

hey nol i respect what you say because you are not a nay sayer and the above i agree with
1.my air comp is more than suciffent at removing moisture its all up the wall lol
2.a tri vac was performed the reading in pic of gages are low because it was the 2nd vac stage i ran the unit to test the cap tube was clear this was done last night when i was finishing up the unit has had the 3rd vac today and a full proper charge i think in total its about 2hr under vac the compressor manifold was sealed with a red bull can gasket and its a reed valve type, same as refige comp just vents to air so its noisey unlike a proper vac pump that has oil to silence and catch the crap mine just fires it all up the wall lol....

low side is 16-20psig and hi side is 170-190psig just fitted a 10.5v transformer to the pc fan so i can run it off the controller also wired that up today just trying some setting under testing as we speak its all working great i dont no what all the fuss is about i built it and it works may be thats why pepole are so naggy on here no affence :up:

[n00b 0f l337]

question do you know why a vac pump has oil in it? oh and as i said at the start i'll do it how choose......... i said that i did not want posts like yours here
He's giving you advice, technically your being the nay sayer to his nay saying ;) ;)
Chances are your removing air and such, but not boiling off moisture, Xeon is correct.

[EvoCarlos]

He's giving you advice, technically your being the nay sayer to his nay saying ;) ;)
Chances are your removing air and such, but not boiling off moisture, Xeon is correct.
yeah problly but like i said it works and im not going to pay £160 for a proper vac my way worked
i did do the boil test with a jam jar and shrader it did boil a bit out
i dont care any more it works so im happy
i just wanted people to be like well done and thats great not critasising cause i dont have a hvac certificut and with spelling like that<---- why would they lol give me one
also advice is nice but there is better ways to put it in text
peace out im going to go play chilled water.....:up:

[Postal Dude]

If He heats up the system with a hair drier as he evacs it. surely the low pressure inside, and external heat source will boil off most the moisture? Putting it on vacuum reduces the boiling point of water, if you can add heat from the outside, and lower the BP of water in the system enough. It should work right? If his needles are bouncing off the gauges lower limit, does he not have the required vacuum? Obviously adding external heat to the mix will also help

[n00b 0f l337]

If He heats up the system with a hair drier as he evacs it. surely the low pressure inside, and external heat source will boil off most the moisture? Putting it on vacuum reduces the boiling point of water, if you can add heat from the outside, and lower the BP of water in the system enough. It should work right? If his needles are bouncing off the gauges lower limit, does he not have the required vacuum? Obviously adding external heat to the mix will also help
Very much so, I have a 1500W Space heater for cascade vacuuming. Helps a ton.
We gave you well dones haha, if your looking for a pat on the back you got it, we're just trying to make sure your system lasts, and you get it running to the best it can do :)

[teyber]

yeah problly but like i said it works and im not going to pay £160 for a proper vac my way worked
i did do the boil test with a jam jar and shrader it did boil a bit out
i dont care any more it works so im happy
i just wanted people to be like well done and thats great not critasising cause i dont have a hvac certificut and with spelling like that<---- why would they lol give me one
also advice is nice but there is better ways to put it in text
peace out im going to go play chilled water.....:up:

your being a true original phase changer here- this is just fine for experimenting and using yourself. If you ever take a customer everybody will shun you if you vacuum this way.

Do you have a heat gun? it would help if you heat the entire system while vacuuming and GENTLY tap the lower half of the compressor all around with a soft mallet while vacuuming.

Check ebay, whatever the UK equivalent version of craigslist is, for vacuum pumps. over here you can get a cheap one thats good ENOUGH for what we do for ~ 50 quid shipped. of course our economy sucks:p: but maybe get one imported from here eventually? im sure the difference in currency more then makes up for the shipping :)


postal dude- about the x's- the only way to know is to buy a vacuum gauge...:up: to play it safe maybe 1 hour then 1 hour then i like to let the last vacuum sit for a long time (maybe 6 hours while im at school, 3 hours if not) or let it sit under 150 microns for at least an hour and tap compressor and heat system, mainly compressor (get moisture from oil sitting in compressor). overkill yes but i figured i payed quite a bit of money for my vac gauge, pump, and short hoses i might as well wait longer for a good vac :).

[n00b 0f l337]

Hehe I have a tendency to let her run all night ;)

[teyber]

Hehe I have a tendency to let her run all night ;)

my mom won't let me run any machines overnight after i um... left the load tester on:rolleyes:

[n00b 0f l337]

*smooth move Einstein*

[teyber]

*smooth move Einstein*

:p:

[wdrzal]

my mom won't let me run any machines overnight after i um... left the load tester on:rolleyes:

Mom raise homes insured value and sends premium in early & double checks to see that it was received on time.. :rofl:

Ps to Everyone: you may want to evaluate/discuss adding additional insurance to cover your expensive tools should a home/garage fire ever occur and you suffer a complete loss,no matter what the cause is.......

[EvoCarlos]

your being a true original phase changer here- this is just fine for experimenting and using yourself. If you ever take a customer everybody will shun you if you vacuum this way.

Do you have a heat gun? it would help if you heat the entire system while vacuuming and GENTLY tap the lower half of the compressor all around with a soft mallet while vacuuming.

Check ebay, whatever the UK equivalent version of craigslist is, for vacuum pumps. over here you can get a cheap one thats good ENOUGH for what we do for ~ 50 quid shipped. of course our economy sucks:p: but maybe get one imported from here eventually? im sure the difference in currency more then makes up for the shipping :)
:).
yep did that :) will keep an eye on ebay.

hey guys right i had a sleep now, my head is clear 1st off just wanted to say my sorrys to detroitAC and Xeon th MG Pony my be i was wrong but the unit is working to a fashtion no malace intended

ok right this is what i think you guys are here for....help
i have found a design floor's
1. 12v pc fans are gay @ 10v(and can any one recommend ether 240v fan or good 12v i can run off a transformer?

2.the unit takes an age to freze up the water around the evap
i.m thinking may be the evap is to large interanally

3.water cooling rad not so good for condencer

and nol you were right in saying about the suction line not being frosted well even with a good charge it wont frost but when i built this unit i did not sub cool the cap tube and hence no liqued @ evap just gas i have now droped the cap tube in the water next to the evap and its frosing the suction line

right i want your guys recommendtions
longer cap? subcool the cap around the suction or just smash it up and say well it was fun for a day lol :):up::up:

i just read this post and it makes no sence so hope you can work it out lol

[n00b 0f l337]

Putting the captube in shouldn't get you more liquid. I think your evap is just fine as well, your captube length's good too. I think you need a better condenser is probably all.

[Postal Dude]

He'll have condensing sorted as soon as i run him up a 1'x1'x2" condenser out of one of these scrap AC units. The evaps look very well suited

[n00b 0f l337]

Yep, he might want a recirculator pump though, as the high fin per area will sort of resist liquid flow.

[EvoCarlos]

Putting the captube in shouldn't get you more liquid. I think your evap is just fine as well, your captube length's good too. I think you need a better condenser is probably all.
ohh o i just exstended the cap by a meter
He'll have condensing sorted as soon as i run him up a 1'x1'x2" condenser out of one of these scrap AC units. The evaps look very well suited
i'm starting to like you more and more :up:

Yep, he might want a recirculator pump though, as the high fin per area will sort of resist liquid flow.
i'n not sure what kind of pump you are talking about nol images are good so i can see what you mean tkx..

just had a oil blockage in the cap tube its well funny when it lets go it was like thunder that will teatch me for using the old cap tube off my vapo should of used neww i got 25m left lol

[EvoCarlos]

some random images

temp probe bulb
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller023.jpg

fan 10v transformer
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller026.jpg

big o block o ice
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller025.jpg

running presures after 3 hours.
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller024.jpg

[Postal Dude]

I think he means in your liquid bucket. A pump to move the ice pack fluid around so you get better temps in the bucket. The thing im giving him wont be in the water. It will be his condenser. Outside the bucket of water

[n00b 0f l337]

just had a oil blockage in the cap tube its well funny when it lets go it was like thunder that will teatch me for using the old cap tube off my vapo should of used neww i got 25m left lol
You won't have oil blockages at your temps, just won't happen.
That's called moisture ;) moisture of oxidation.
Also, ice is an insulator aka bad. So you need a lower temp fluid, preferablly with a very low viscosity since your using a radiator in the liquid.

[EvoCarlos]

You won't have oil blockages at your temps, just won't happen.
That's called moisture ;) moisture of oxidation.
Also, ice is an insulator aka bad. So you need a lower temp fluid, preferablly with a very low viscosity since your using a radiator in the liquid.

you may just be right there as i run out of gas so i put my bottle of R507 on but i dont think i bled the line set when i did it i must have put a lines worth of air in there, need to get some more gas tomorow dont get my R507 till wednesday now as of the bank hols

so what you are saying if i use antifrezze in the holdover tank the temp will transfer better?

nol you will have a pm soon from me :up:

[Postal Dude]

Yeah carl. Solid ice isnt as good at transfering heat, as a liquid at the same temperature. A water/antifreeze mixture will be alot better for transferring heat. Although ice looks cooler lol

[EvoCarlos]

tru your right it looks cool:up:

right this is a do not try this @ home moment i have had to revac as i let air in (fool) but i did not have a purge gas to push out moisture oh wait a min i do but your not going to like it lol
hhhrrrmmmmm water cooling pipe blow torch and a schrader hrrm -16c thats better than my atempt with r134a but exsplosive its coming out 2moro just using it to do a triple vac and i can vent it as its not ozone depleting
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller028.jpg
so whats the Rxxx code for propain/butain is it r907? i can't find it in coolpack's list

[n00b 0f l337]

R290 is propane.
Ice is a straight up insulation. You want something like alcohol actually, not anti freeze.
Download this from the link on my FTP.
http://www.thewiltedrose.net/adam/Phase%20Projects%2007/Phase%20Information/Refrigerants.xls

[EvoCarlos]

R290 is propane.
Ice is a straight up insulation. You want something like alcohol actually, not anti freeze.
Download this from the link on my FTP.
http://www.thewiltedrose.net/adam/Phase%20Projects%2007/Phase%20Information/Refrigerants.xls

lol i found my office disc that very helpful chart to have:)
the gas that i put in is R-290/600a(50/50) bp of -32.8
i think but of what % i dont know its butane/propane mix

theres a simller thing on coolpack but not so many in the list lol
whats the safty ratings mean? a/a1-b1?

[n00b 0f l337]

Toxicity and flammability.

[EvoCarlos]

Toxicity and flammability.

yeah im going to stay away from the flammables
next question so in this image http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller005.jpg

would it be better to use the rad as an evap instaed of the copper tube i have used? i have now moved the water flow from the rad to the tank to make flow thru the water so it cools quicker but ive had a big setback with one of my gfx cards stoping working due to water colecting on the card i did a real good job of laging it all up and pasting the card in vasoline but still a problem

also the controler that i bought has been great, off temp and comp delay at start with on screen temp down to a min of -50 the only bad thing i found was the cost of postage lol
from here its the tlz11 (http://www.t-uk.co.uk/refrigeration_controls.htm)

[n00b 0f l337]

I don't think you'll have any circulation through that tight of an evap though. I think you need a small liquid pump to move stuff around.

[EvoCarlos]

I don't think you'll have any circulation through that tight of an evap though. I think you need a small liquid pump to move stuff around.

im now using the water from the tank it is being pumped round the water loop and over the evap but i think my 60/40 mix of water antifreze is to strong for it as its rate'd to not frezze @ -60 with a 60/40% so i might try 50/50 see if it allows it to go cooler but i think the evap that i have is poo i may try the rad its only a evac a way:)

[Xeon th MG Pony]

If it is a sealed manifold, like his, it is most likely perfectly possible as a single stage vacuum pump. Surely not as good as a 2 stage, and he's got alot MORE vacuuming to do, even with that 9.5cfm rating, but it should work.

No and flat out no, He's using a piston, which has a dead space at TDC where re-expansion will occure, at this point at low vacuum it gurentees he can not pump out any further and efficiency disapears, same as a low SST in a recipicating compressor. Hence the gurentee he will have moisture in the system and minute amounts of air in the system.

[Xeon th MG Pony]

hey hey i knew this would happen you guys can leave it can you alway saying no thats not right..:down:
question do you know why a vac pump has oil in it? oh and as i said at the start i'll do it how choose......... i said that i did not want posts like yours here


I'm a certified technician so I know a hell of allot better why they do then you will! and by the very post it appears you don't know why at all.

FYI: The oil is NOT there to "Catch the crap" It is to lubricate and to mechanically seal the veins, this is why clean oil is paramount to efficient vacuum pump as dirt will cause the van to not totally seal thus reducing the strength of the vacuum. Vacuum pumps do not rely on valves reed or other wise, they rely on a constant rotation & oil seal. Idealy nothing will be caught in our oil!

Simply put the vacuums main purpose is to remove moisture & Air, running mineral oil you will have moisture tolerance ie no acidic oil, but you'll have your expansion device freezing up all the time and the system will fail.

I don't bs I just give the facts straight up, you won't get sugar coating with this pony!

[Xeon th MG Pony]

yeah problly but like i said it works and im not going to pay £160 for a proper vac my way worked
i did do the boil test with a jam jar and shrader it did boil a bit out
i dont care any more it works so im happy
i just wanted people to be like well done and thats great not critasising cause i dont have a hvac certificut and with spelling like that<---- why would they lol give me one
also advice is nice but there is better ways to put it in text
peace out im going to go play chilled water.....:up:

You want it to work good then you need the right tools, I would say nothing about a cert, all it is a piece of paper worthless in its own right, what matters is how you do it. No cert needed so long as you play by the proper rules and use good procedure. As such will ensure a good working reliable safe system.

If you do not want constructive criticism and just want praise plenty of newb sites that don't know any better will do that!

I assume you come here to learn and as such I offer what cost me 5 years + 10,000 dollars to learn, you learn getting criticism.

[Xeon th MG Pony]

yep did that :) will keep an eye on ebay.

hey guys right i had a sleep now, my head is clear 1st off just wanted to say my sorrys to detroitAC and Xeon th MG Pony my be i was wrong but the unit is working to a fashtion no malace intended

ok right this is what i think you guys are here for....help
i have found a design floor's
1. 12v pc fans are gay @ 10v(and can any one recommend ether 240v fan or good 12v i can run off a transformer?

2.the unit takes an age to freze up the water around the evap
i.m thinking may be the evap is to large interanally

3.water cooling rad not so good for condencer

and nol you were right in saying about the suction line not being frosted well even with a good charge it wont frost but when i built this unit i did not sub cool the cap tube and hence no liqued @ evap just gas i have now droped the cap tube in the water next to the evap and its frosing the suction line

right i want your guys recommendtions
longer cap? subcool the cap around the suction or just smash it up and say well it was fun for a day lol :):up::up:

i just read this post and it makes no sence so hope you can work it out lol

Accepted, Sorry for being blunt, just the way I communicate it is not intended to be mean or insulting, just take it at face value.

2 - A weak solution of sodium hydroxide will eat away the aluminium fins on the evap nicely. Your evap is fine, it is the cap tube length or mor likely some moisture in the system is freezing and reducing your capacity. We want our evap large in volume and surface area!

3 - No, no it wouldn't be very good for a chiller this size, you want at least a 6,000btu condenser (Remember a hermetic compressor will be adding 30% of its own load on the condensor!)

What to do?
I'd immagin if you can get your self a cheap R-12 tvx from ebay of the 1/4Ton range will make your life way easier for charging and load handling, if not then wait till you have a vac pump that can pull down to 500 microns, (A good vac makes all the dif in the world!).

I'd start with a larger condensor first off. Secondaly what are you going for? Fast pull down or ultimate acheived temp? You can have one or the other but not both! unles you have a TXV it can give both!

[DetroitAC]

(oh and i dont want any posts with You can't do it like that):cord:
well i have to say i.am doing it like that i mean its not like its rocket since lol :rofl::cord::shrug: :up: :up: :up:

I think EvoCarlos has made it clear in his first post that he doesn't want this kind of argument. I've had some things I wanted to warn him about, but I've respected his request to not post that in this thread. (pretty sure you meant rocket science, right?)

IMO if you ask in the first post for no criticism, that's what you should get ( a few reminders may be necessary since not everyone reads an entire thread). No criticism, even if it's constructive, even if if you think your input will help him. I don't think EvoCarlos should need to hunt for a new forum, he should be able to post his build here as long as he stays within forum rules and good taste.

[EvoCarlos]

Accepted, Sorry for being blunt, just the way I communicate it is not intended to be mean or insulting, just take it at face value.

2 - A weak solution of sodium hydroxide will eat away the aluminium fins on the evap nicely. Your evap is fine, it is the cap tube length or mor likely some moisture in the system is freezing and reducing your capacity. We want our evap large in volume and surface area!

3 - No, no it wouldn't be very good for a chiller this size, you want at least a 6,000btu condenser (Remember a hermetic compressor will be adding 30% of its own load on the condensor!)

What to do?
I'd immagin if you can get your self a cheap R-12 tvx from ebay of the 1/4Ton range will make your life way easier for charging and load handling, if not then wait till you have a vac pump that can pull down to 500 microns, (A good vac makes all the dif in the world!).

I'd start with a larger condensor first off. Secondaly what are you going for? Fast pull down or ultimate acheived temp? You can have one or the other but not both! unles you have a TXV it can give both!

hey yeah i relazed that a few post back and i must of over recactided
re:2. i have now modifided the unit to get betterrrr performance well try lol had a real big problem i'll tell ferther down,
i will keep an eye out for txv but £££ is the problem atm lol
re 3. i have a large condencer here to uses now certaesy of Postal dude and a big thanks to him :up::up:
re what i want form this unit will as i have the controler i would like it to pull down fast and then off @ a set temp with the pc using the temp from water thats chill'd
aaaaaaaaarrrrrrrrrrrrr i need vac pump my air commpressor is dying very slowlly its 8 years old and its shaged lol may invest one day:yepp:

I think EvoCarlos has made it clear in his first post that he doesn't want this kind of argument. I've had some things I wanted to warn him about, but I've respected his request to not post that in this thread. (pretty sure you meant rocket science, right?)

IMO if you ask in the first post for no criticism, that's what you should get ( a few reminders may be necessary since not everyone reads an entire thread). No criticism, even if it's constructive, even if if you think your input will help him. I don't think EvoCarlos should need to hunt for a new forum, he should be able to post his build here as long as he stays within forum rules and good taste.

hey detroit i dont mind if you want to say it can go here i was just a bit moody when i put i dont want that kind of post lol

also on another note as i have only realy got in to phaze just these last 2 months or so and the 1st bit i did was just repairing a vapo ls that was a bit messed up this chiller was my learning curve to phaze and i have learnt alot and have solve a few problems myslef in the process oh and my brazing skillz are uber leet now just need to get my oxy/acc bottles for speed brazing lol

right on to what i was doing to day project fxxxxx shh not yet
this monring i evac'd the chiller and removed the water rad condencer and added a 2nd on top so now i have 2 linked i remove the water rad from the water box as it made no diffrence what so ever i have now move the water flow in to the water box and improvemnts were made
but i vac'd it down and pured it with propain/butain to flush out the moisture then gas'd it up to 30psig thru the hi side started it up and gas it to running pressures but low and behold 5mins was all i got out if it

then total loss of everything pressures stuck no flow from hi to low when off so to night evc'd it again and unbrazed it all testing all the pipes were clear with propain as it was to hand the cap was clear the condecer was clear but the filter was full absolutilly blocked. F%$K it i shouted and got my hair off with it for 10seconds but where had all this crap come from well it was from the 2nd water rad i had added it was full of limescale i did purge while brazing but this did not help lol
i taped the filter on the bench for 5mins and got all the limescale dust out put it all back together and tri vac'd it for 40mins gas'd it up with 507
now with the evap in air it got to -40 and run for 2 1/2 hours with no problems just trying to get the charge right now

:banana::banana::banana::banana: me have i realy wrote this much damn i should of just said it broke but now its fixd lol:up::up:

[Xeon th MG Pony]

if you want fast pull down a short cap tube will give you an expedient one but your ultimate low temp will suffer for it. Excellent to hear about the condensor congrates!

right now with the strength of the pound you aut to be able to score one nie a quid on the US ebay. Sounds like you may need a new filter/drier or at least recomend one as such.

[drbhatti]

brilliant work, in a day! whodve thunk it?!

[EvoCarlos]

if you want fast pull down a short cap tube will give you an expedient one but your ultimate low temp will suffer for it. Excellent to hear about the condensor congrates!

right now with the strength of the pound you aut to be able to score one nie a quid on the US ebay. Sounds like you may need a new filter/drier or at least recomend one as such.
i'll defo keep an eye out for a vac of some discription
i was going to change the filter but it seams to be working fine now i do have a new one but i have no 1/8 pipe to reduse it to cap tube lol

brilliant work, in a day! whodve thunk it?!
cheers bud i playing with it now seeing what affects the runing and other stuff lol

so the cap tube has been shortend by 7" and the evap i made is 2ft shorter now and coiled close then soft solderd to help transfer the temp thru the hole coil so pics for you to look @ and ponder @
this ones b4 evap mod
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller036.jpg

http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller050.jpg
dirty pipe the soft solder would not stick lol
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller051.jpg
4mins its getting there filter down hill
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller052.jpg
10mins gone by and it a big ol lump o ice filter up hill it works better on this application
http://i90.photobucket.com/albums/k262/evocarlos/water%20cooled/waterchillR/Waterchiller053.jpg

[Postal Dude]

Lookin good mate!
Use some of your halfrauds antifreeze to see how cold you can get liquid.As soon as you get ice on the evap it insulates it, ruining heat transfer.With antifreeze in there the liquid temp will get alot lower.

[EvoCarlos]

Lookin good mate!
Use some of your halfrauds antifreeze to see how cold you can get liquid.As soon as you get ice on the evap it insulates it, ruining heat transfer.With antifreeze in there the liquid temp will get alot lower.

with the anit frez it take ages to chill down so ivw made a weak mixture it gets a bit o ice on the evap which helps cool the water down faster 4l of water/af mix 20mins to -10 with the water flowing over the evap still room for improvemt but cba as i used my last silver solder on ur chiller so go to wait till tomorow to get some :) then im going to fit that big ass condencer yeah!!!!!

[Postal Dude]

i'v got the fan here for that too when we get together next. It should fit right over the top of it :D

Big ass condenser. Good gas. Tiny little efficient evap. I think its gonna pull down nice :D