Re: Will somebody please explain this set up to me!!Oh! Hi every one!
My last trip to the track, using ice water as coolant on a 90ish degree day, my charge temp at launch was 60 degrees and rose to 102 degrees over a 10.4 second pass at 26psi of boost. I think it could be better if I wasn't pulling hot underhood air into the compressor.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
I would like to point out the A.J.'s experience with intake temps with his W/A system to me is odd. I know he went through different iterations and tried different things, but *something* wasn't right. Based on what Warren and I have talked about, I don't think the Frozen Boost cores are all that great. In this case, you very well might be getting what you pay for as after going to a different core Warren has had a better experience.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
This thread has all the makings of another ported stocker vs. tubular header battle royal. Those were the days...
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
thedon809
Are you attributing his problems with water to air setups as a whole? Or incorrectly sized cooler? I've done a lot of reading and people have had good success with water to air setups.
No idea what A.J.'s issue is. All I am saying is, verify the intercooler setup is working correctly under load, don't just assume because you spend a bunch of money and put it together it will work correctly under load.
Quote:
Originally Posted by
rgl10
Normally my setup never got above 120 to 130 under 18 psi boost. I only logged it from the charge temp sensor which I know is very slow to respond but even on long uphill pulls it would stay around 100 degrees or so.
From 5 years ago --
https://www.turbododge.com/forums/f4...e-build-6.html
I used the open element charge temp sensor, which respond pretty quick. Something like this. https://www.amazon.com/Genuine-GM-25.../dp/B000ECMZ20
It always seems strange to me that the longer I stay in boost the colder my charge air temperature. Maybe that just shows how heat soaked my intake manifold really is.
http://thelostartof.net/tryingbe/dod...old4thgear.jpg
Quote:
Originally Posted by
contraption22
My last trip to the track, using ice water as coolant on a 90ish degree day, my charge temp at launch was 60 degrees and rose to 102 degrees over a 10.4 second pass at 26psi of boost. I think it could be better if I wasn't pulling hot underhood air into the compressor.
Thanks for the data.
Quote:
Originally Posted by
Reaper1
I would like to point out the A.J.'s experience with intake temps with his W/A system to me is odd. I know he went through different iterations and tried different things, but *something* wasn't right. Based on what Warren and I have talked about, I don't think the Frozen Boost cores are all that great. In this case, you very well might be getting what you pay for as after going to a different core Warren has had a better experience.
Yup, we know it is odd and no, we never figure out what caused it. As I said before, verify the intercooler setup is working correctly under load, don't just assume because you spend a bunch of money and put it together it will work correctly under load.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
tryingbe
No idea what A.J.'s issue is. All I am saying is, verify the intercooler setup is working correctly under load, don't just assume because you spend a bunch of money and put it together it will work correctly under load.
Gotcha. I would hope people would be logging IAT's. I moved my air temp sensor from the manifold to the IC pipe thinking it would be more accurate. Most cars I see these days don't put the temp sensor in the manifold. I'm assuming so they don't get heat soaked.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Csxtra, thank you for explaining that set up, ith's that first time i've seen that and it intrigued me, so thanks again, very much!!
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
There is no ac system on the planet that will operate below 32f for very long unless perhaps you live in a place with near-zero humidity. The whole reason why AC systems don't just blow 20* air everywhere is that the condensation collecting onto the evaporator core will freeze and block flow across the evaporator until it becomes an ice cube. Maybe the Arizona residents here could get away with it. For most people, blowing below-freezing air out of your AC vents is only good for putting a short clip on youtube that doesn't mention that the system will stop blowing anything some time after until you turn it off for like 30 minutes. If you could somehow change the operation of the system on the fly so that the evaporator would not drop below freezing until the cabin humidity was below a certain point, that'd be a neat trick honestly.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
Reaper1
I would like to point out the A.J.'s experience with intake temps with his W/A system to me is odd. I know he went through different iterations and tried different things, but *something* wasn't right. Based on what Warren and I have talked about, I don't think the Frozen Boost cores are all that great. In this case, you very well might be getting what you pay for as after going to a different core Warren has had a better experience.
I originally had a Frozenboost Type 3 A/W intercooler in my car and I was logging pressure drop and Intake Air Temps and during a 1/4 mile run I was seeing 4-5 psi pressure drop at 28psi of boost and the Intake Air Temps increased from 94 degrees at the beginning of the run to 138 degrees by the end of the run (44 degree increase), while the water temperatures only increased by 1.6 degrees from 87.4 to 89 degrees over the run. The outside temps were in the upper 40s.
After seeing those lackluster results, I had the custom A/W IC built using a bigger Bell core, but leaving the rest of the system the same (Meziere pump, Frozenboost type 101 heat exchanger, and a 2.5 gallon reservoir).
This year on Hot Rod Drag Week, I finally got the tune on the car close enough to run a decent time (12.6 @ 114.8) and had my datalogging setup working correctly. The log for that run showed a max pressure drop of 2.6psi at 34psi of boost, and the Intake Air Temps started at 134 degrees with a heat-soaked intake, dropped to 126 degrees once moving in first, then increased to 141 degrees by the end of the run (15 degree increase), while the water temperatures stayed constant at 116 degrees during the run. The outside temperatures were in the upper 80s/low90s.
The other interesting thing is that the temperature drop across the intercooler at the end of the run was 281 degrees (max turbo outlet temp was 422 degrees - sucking in hot underhood air).
After reviewing my logs, I need to do something to reduce the Intercooler water temps before the run to below ambient. I need to put in an insulated water tank and either allow adding ice, or do like RGL10, AJ, and Andrew Kane did and plumb a heat exchanger into my A/C system to pre-cool the intercooler water before a run at the track.
Quote:
Originally Posted by
errol
Csxtra, thank you for explaining that set up, ith's that first time i've seen that and it intrigued me, so thanks again, very much!!
You're welcome errol, thanks for starting a good thread!
Warren
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
My question is, is it a problem with frozenboost core design? Or just the size of the core? I was looking at going with the type 5.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
thedon809
My question is, is it a problem with frozenboost core design?
Quote:
Originally Posted by
csxtra
I originally had a Frozenboost Type 3 A/W intercooler in my car and I was logging pressure drop and Intake Air Temps and during a 1/4 mile run I was seeing 4-5 psi pressure drop at 28psi of boost and the Intake Air Temps increased from 94 degrees at the beginning of the run to 138 degrees by the end of the run (44 degree increase), while the water temperatures only increased by 1.6 degrees from 87.4 to 89 degrees over the run. The outside temps were in the upper 40s.
Quote:
Originally Posted by
tryingbe
A.J. had a frozen boost water to air intercooler core as well.
Those are solid numbers telling you frozen boost core doesn't cool the boost well, nevermind freezing it.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Yeah, I think I've enough evidence of that in the various threads and discussions on it to convince that I need to be looking at upgrading my frozenboost I/C to something better. Worked good for a relatively cheap system on lower boost levels (max I ran was 25 on a spike, final tune was better at 18-20 psi). It's a good upgrade over a stock intercooler without having to figure how to run 2.5" piping around a full-size rad.
I never had any logging of intake temps, but I know after 3 back-to-back 8th mile runs, it would feel warm to the touch instead of cold like usual, and it would start getting slower. Moving on the street or highway, never had any such issue, it was solidly consistent. That's at anywhere from 18 to 22 psi on a stock Garrett. It did run a 9.24@80mph in the 8th with a horrible 2.32 60ft and 3300# race weight, so it made decent power for a stock 2.5 .
I'll run it again here shortly on my new TIII setup, but I think I will look into a better core. If I can though, I'll get some kind of datalogger and see what the temps actually are first.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
Vigo
There is no ac system on the planet that will operate below 32f for very long unless perhaps you live in a place with near-zero humidity. The whole reason why AC systems don't just blow 20* air everywhere is that the condensation collecting onto the evaporator core will freeze and block flow across the evaporator until it becomes an ice cube. Maybe the Arizona residents here could get away with it. For most people, blowing below-freezing air out of your AC vents is only good for putting a short clip on youtube that doesn't mention that the system will stop blowing anything some time after until you turn it off for like 30 minutes. If you could somehow change the operation of the system on the fly so that the evaporator would not drop below freezing until the cabin humidity was below a certain point, that'd be a neat trick honestly.
There is one thing you are overlooking with this line of reasoning. The evaporator can freeze solid in my car till there is no airflow coming out the vents but as long as your refrigerant is pure with no moisture inside the lines then refrigerant will still flow. The lines do not freeze inside. The cycling switch will cause the compressor to kick out if there is no heat exchange going on but if you have heat in your water then your low side pressure will still be high enough to keep the compressor on. The H valve will limit the flow of refrigerant if the Freon (Suva) gets cold but the system will always flow some to keep the compressor lubricated. That actually helps the intercooler system as your regular ac is not adding any heat to the Freon. Liquid is coming out of the evaporator instead of gas so the boiling and heat exchange takes place in your water heat exchanger instead of the evaporator. R134a boils at -15 degrees so it is theoretically able to get the water temperature down to that if it has antifreeze in it. I can guarantee the water can get below zero. My exchanger had ice on the outside of it many times. Also you need your intercooler in the heat of summer more than in winter so it is unlikely you can freeze the system unless you are racing on ice covered roads where you don’t need much intercooling anyhow.
1 Attachment(s)
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
rgl10
There is one thing you are overlooking with this line of reasoning......
This guy gets it. I'm an engineer for a company that supplies A/C compressors to car companies (being vague on purpose) and we test A/C systems and parts. When I saw your system my first thought was "damn it, he did it first".
My approach is (or will be) slightly different though. I've been DYING to try one of these puppies on my GLHS:
http://www.turbo-mopar.com/forums/at...id=63208&stc=1
They are refrigerant to coolant heat exchangers, with their own expansion valves (TXV). I have a bunch of different sizes, one even bigger than the one on the left. I also have a few refrigerant solenoid valves (normally open or normally closed) to shut off the flow to the evaporator if necessary. They're primarily used to cool batteries in hybrid/electric cars, but their capacity is surprising compared to their size.
All I need to do is get my GLHS to run for an appreciable amount of time without breaking. Currently putting the engine back together after ALL the valve stem seals popped off.
Thanks for your contribution to the community!
Jeff
Quote:
Originally Posted by
rgl10
(Suva)
You just made my heart skip a beat! .....my God the times I've had to choke on my words and take a deep sigh when I hear people talking about the "Freon" in their cars. So few people care about the difference between R-12 and R-134a, or even what a "trade name" is.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Jeff,
Thanks for joining the discussion!
I have been considering using solenoids to switch between the stock expansion valve and evaporator and a separate expansion valve and heat exchanger for cooling the intercooler coolant, so I can either cool the passenger compartment or the intercooler with the A/C system.
Those units are EXACTLY what I had been looking for, and I had not yet found any solenoids yet. Without exposing your "secret identity" is there a retail source for these TXV/heat exchanger units and the refrigerant solenoids?
Thanks!
Warren
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
Turbo SOB
This guy gets it. I'm an engineer for a company that supplies A/C compressors to car companies (being vague on purpose) and we test A/C systems and parts. When I saw your system my first thought was "damn it, he did it first".
My approach is (or will be) slightly different though. I've been DYING to try one of these puppies on my GLHS:
http://www.turbo-mopar.com/forums/at...id=63208&stc=1
They are refrigerant to coolant heat exchangers, with their own expansion valves (TXV). I have a bunch of different sizes, one even bigger than the one on the left. I also have a few refrigerant solenoid valves (normally open or normally closed) to shut off the flow to the evaporator if necessary. They're primarily used to cool batteries in hybrid/electric cars, but their capacity is surprising compared to their size.
All I need to do is get my GLHS to run for an appreciable amount of time without breaking. Currently putting the engine back together after ALL the valve stem seals popped off.
Thanks for your contribution to the community!
Jeff
You just made my heart skip a beat! .....my God the times I've had to choke on my words and take a deep sigh when I hear people talking about the "Freon" in their cars. So few people care about the difference between R-12 and R-134a, or even what a "trade name" is.
awesome input. love the hands on tech..
and yes.. if your water intercooler system using a liquid evap core chilling you can get fluid below freezing..
The piece you show looks alot like the killer chiller water/evaportator set up.
https://www.speedlogixstore.com/product-p/kc-hc.htm
https://cdn3.volusion.com/gtmo2.k7dx...os/KC-HC-2.jpg
long term plan for the van is a AWIC frozen boost core with larger water holes.. and a killer chiller plumbed in. with a 03-04 cobra heat exchanger and cobalt pump. and 2-4 gallon tank.
I think one of the main problems with the frozen boost cores is the SMALL water inlets and outlets.. they just cant flow fast enough. the water absorbs the heat and is stuck in the intercooler too long.
That is why we are seeing INTAKE temps going up. but resiviour and tank water temps not moving. The water is doing its job in .5 a second.. but stuck in the core and low flow for 2-3 seconds..
Look at the size of the water oulets.. with a fitting on it. maybee 8-9mm holes? you cant move enough water.
400CFM of air goes through the cooler. and you can barely get 3 gallons a minute through your pipping...
http://www.frozenboost.com/images/product/type51.jpghttp://greenhulk.net/forums/attachme...3&d=1368025469
http://www.siliconeintakes.com/image...ooler_mod1.jpg
Now look at the coolant out puts on a precision and bell and holley core.
https://cdn1.bigcommerce.com/server3...0.1280.jpg?c=2
http://realstreetperformance.com/pre...054-1000_2.jpg
https://ls1tech.com/forums/attachmen...ps1a956809.jpg
https://www.speednik.com/wp-content/...kJL-Custom.jpg
I think the main problem with the frozen boost design is SMALL coolant connections. Once I purchase my set up I had planed to have it machined for larger outlets and connections. to get that HOT coolant out faster and get some cold water into the core faster.. should equalize the difference.. if we see +40* of intake temp and only +4* in intercooler liquid temp. its a clear sign we are not utilizing enough of the coolant heat transfer abilities. I want to see my intercooler tank water temps go up 20-30* and the intake temps go up 20-30* as well.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
No, thank you!
Quote:
Originally Posted by
csxtra
is there a retail source for these TXV/heat exchanger units and the refrigerant solenoids?
OK, there's a normally open refrigerant solenoid on the Fiat 500 BEV, and I believe it's the same unit or very similar used on the new plug-in hybrid Pacifica. They're too new to find in the junk yards, but the dealer might be able to get them if you're willing to pay those prices. Older Ford Escape hybrids have a normally closed solenoid.
The chiller on the left is a prototype unit from a few years ago that is not in production on anything I know of. The Chevy Volt has one that's similar in size to the one on the right. Don't let it's small size fool you, it's quite capable. The first gen Volt unit is bigger.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
csxtra
is there a retail source for these TXV/heat exchanger units and the refrigerant solenoids?
Thanks!
Warren
Crophex makes them.
http://www.crophex.com/products/brazed-heat-exchangers
HFM makes them
https://www.hfm-phe.com/
and FYI BMW/mercedez and audi are using these devices to cool transmission fluid. and rear diff fluid.
and Telsa uses them . the Volt has them and spark EV.
This is some blurbage about them
https://www.motor.com/newsletters/20...ecrviceQs.html
and info on them from valeo.
http://www.valeo.com.cn/en/our-activ...ement-466.html
http://www.valeo.com.cn/medias/uploa...-diaporama.jpg
teslas unit.
http://www.teslorean.com/tesla-technology/
https://article.images.consumerrepor...Model-S-shield
sanhua also makes them.
http://www.sanhuaautomotive.com/prod...ller-assembly/
So does Hell/Behr
https://www.hella.com/techworld/us/T...vehicles-1725/
:lol:
becoming more and more popular.. we had something very similar decades ago in fork lifts..
i think they were hydraulic fluid coolers.
good stuff.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
AJ ran one of these for a few years in his minivan.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
There is one thing you are overlooking with this line of reasoning. The evaporator can freeze solid in my car till there is no airflow coming out the vents but as long as your refrigerant is pure with no moisture inside the lines then refrigerant will still flow.
Don't get me wrong because i absolutely love your omni and think it's one of the most interesting things i've ever seen in this community, but I live in a state where my cars that don't have AC literally get parked more than half the year. If airflow across the evaporator stops then so will airflow across the outside of the car because... i will park it. But, I acknowledge your use of the principle you stated to achieve a specific thing. I just hate to think people are looking at vids of someone claiming their vents blow below freezing and hoping they can actually hot rod their AC system to achieve that continuously. I'd rather deal with mere 40f discharge temps than wait in the Texas sun for my evaporator to thaw.
Re: Will somebody please explain this set up to me!!Oh! Hi every one!
Quote:
Originally Posted by
masterjr33
I think the main problem with the frozen boost design is SMALL coolant connections. Once I purchase my set up I had planed to have it machined for larger outlets and connections. to get that HOT coolant out faster and get some cold water into the core faster.. should equalize the difference.. if we see +40* of intake temp and only +4* in intercooler liquid temp. its a clear sign we are not utilizing enough of the coolant heat transfer abilities. I want to see my intercooler tank water temps go up 20-30* and the intake temps go up 20-30* as well.
Maybe, but I had pretty good flow going through mine using 5/8 hose. I had almost thought it was too much flow, like it wasn't staying in the core long enough to absorb the heat. Could be wrong though. Car is almost ready to drive again, so maybe once I get some temp logging equipment I can check temps, then drill out the holes to allow 3/4 or 1" hose and see what it does. I think the exchanger fittings are at least 3/4, IIRC I had to step them down to use 5/8 hose.