GD George's cars (Retired)
- Thread starter HolyCrapItsFast
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HolyCrapItsFast
Drinks beer!
And my good friend Ray is making progress on fabrication....
HolyCrapItsFast
Drinks beer!
Moar!
HolyCrapItsFast
Drinks beer!
That's the Air to Water Intercooler. :tup:
HolyCrapItsFast
Drinks beer!
Yes... significant increase in flow and efficiency requires less size with the AWIC. Notice how short the pipe run is? Can you say "No turbo lag!" 
This, coupled with the heat exchanger and a chiller, will massively out perform any front mount IC... Or so I hope to prove with my flow gauge. :tup:
This, coupled with the heat exchanger and a chiller, will massively out perform any front mount IC... Or so I hope to prove with my flow gauge. :tup:
Alin
Diehard Car Enthusiast!
Yes... significant increase in flow and efficiency requires less size with the AWIC. Notice how short the pipe run is? Can you say "No turbo lag!"
This, coupled with the heat exchanger and a chiller, will massively out perform any front mount IC... Or so I hope to prove with my flow gauge. :tup:
How would an AWIC work on this setup?
HolyCrapItsFast
Drinks beer!
Fairly well I would imagine. :tup:
Alin
Diehard Car Enthusiast!
[MENTION=1069]35r[/MENTION] seems to disagree. [MENTION=3516]zax[/MENTION] and [MENTION=1868]Boogieman98[/MENTION] are alongside your thoughts on it being a very efficient way.
http://igotasti.com/vBforum/showthr...tercooler-!!!!!!!!!!!!!!/page2&highlight=awic
So, why does [MENTION=1069]35r[/MENTION] disagree?
I love the back to the future reference (Mr Fusion)
George's cars Old and New, Updated with Porn
Jesus alin, read things properly. I don't disagree, its great for a car that isn't being driven daily. This is what you put in a racecar alongside an icebox. Everyone is worried about less lag... Buy the proper turbo and an aftermarket top mount with splitter and you wont have it. There are so many of our cars making very solid power because they are properly built. You aren't going to make enough power for an AWIC to make that much of a difference anyways. We don't drive Evos. Max power for most Subaru owners is around 450 and mainly because they cost so much to get to that point. And that is an achievable number without extra headaches of a friggin AWIC. If you aren't planning on racing and building something you NEED this for its a waste of time and money.
Jesus alin, read things properly. I don't disagree, its great for a car that isn't being driven daily. This is what you put in a racecar alongside an icebox. Everyone is worried about less lag... Buy the proper turbo and an aftermarket top mount with splitter and you wont have it. There are so many of our cars making very solid power because they are properly built. You aren't going to make enough power for an AWIC to make that much of a difference anyways. We don't drive Evos. Max power for most Subaru owners is around 450 and mainly because they cost so much to get to that point. And that is an achievable number without extra headaches of a friggin AWIC. If you aren't planning on racing and building something you NEED this for its a waste of time and money.
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HolyCrapItsFast
Drinks beer!
I'm getting really good with the Arduino. I never though I had this in me! :tard:
The number's you see are for demo purposes only but this is what this is going to look like in rear time. I finished the actual program last night. Now all I need is a damn turbo to try this on :lol:
The number's you see are for demo purposes only but this is what this is going to look like in rear time. I finished the actual program last night. Now all I need is a damn turbo to try this on :lol:
HolyCrapItsFast
Drinks beer!
Making good progress on my AWIC controller! I believe it is finished. The hardest part about this project was not programming or designing the circuits but making the temp sensors. Drilling out these adapters was a bitch with a 60 year old drill press! :tard:
So to recap what this does, I needed a way to measure the ambient temperature at the air intake, the input temperature to the AWIC and the output temperature from the AWIC to prove efficiency. Then I decided to add in and out temps on the heat exchanger to prove delta temperature. So then I figured why stop there... Measure the flow rate and calculate GPM and BTU. Still not done... I can really control the functionality of the entire setup if I use this information to control the condition and improve AWIC efficiency. So I incorporated water pump speed throttling, heat exchanger fan operation and an additional heat pump assembly, put in series with the heat exchanger, that will cool the water when ambient temps go above 85*f and heat the water in ambient temps below 55*f. More detail below...
Control function features...
Pump speed throttling:
To help maintain the most efficient conditions possible, you want to see the most heat energy transfer from the heat exchanger as possible. To measure this you look to the delta temperature between the input and output of the heat exchanger. If the delta temperature is low then there is little energy being transferred. To improve situations like this it is necessary to slow the pump down to allow the water to remain in the heat exchanger for a longer period on time allowing the most transfer of energy possible. Adversely when the delta temps are high, the heat exchanger is being efficient and this allows you to pump higher volumes of water and increase the pump speed. The controller allows three possible speeds... 33%, 66% and 100%. It does this by using a PWM signal.
Heat Exchanger Fan control and water spray:
The fans are meant to keep the heat exchanger as cool as possible in hot weather conditions and a water spray can be used automatically when ambient temps are high or on demand by the user in conjunction with the chiller. The controller simply monitors the output temperature of the heat exchanger and when temps reach 85*f, the fans turn on. When output temp has settled below 81*f, the fans turn off for a 4 degree hysteresis. The fans and water spray will also come on when ambient temps reach 95*f.
Chiller/Heater (Heat Pump) Control:
The heat pump unit is in addition to the heat exchanger. After the water has been processed in the heat exchanger, it can be further processed by running through a thermoelectric cooler/heater to allow either greater than 100% AWIC efficiency or to heat the air to aid in cold start and warm up conditions when running E85.
This idea was spawned from the ice box idea. Though it may not be as efficient or effective as an ice box, it does have it's advantages. For one, once the ice is gone, there is no cooling... with the heat pump, it will remain active forever and without any maintenance or moving parts. Two, it can be used to heat the water allowing the AWIC to heat the air going into the engine for previously mentioned reasons.
The heat pump is controlled with two relays that reverse the polarity to the thermoelectric coolers. When ambient air is greater than 95*f, the chiller is active (Goes off @ 83*f). It will also activate when delta temps in the heat exchanger are below 5*. When ambient temps are bellow 55*f, the heater is active (Goes off at 65*f). The chiller can also be use On-Demand) for those special occasions when you would like to race and have an ice box effect.
The construction of the unit needs to be completed as of yet.
Here are some pics of the finished controller...
So to recap what this does, I needed a way to measure the ambient temperature at the air intake, the input temperature to the AWIC and the output temperature from the AWIC to prove efficiency. Then I decided to add in and out temps on the heat exchanger to prove delta temperature. So then I figured why stop there... Measure the flow rate and calculate GPM and BTU. Still not done... I can really control the functionality of the entire setup if I use this information to control the condition and improve AWIC efficiency. So I incorporated water pump speed throttling, heat exchanger fan operation and an additional heat pump assembly, put in series with the heat exchanger, that will cool the water when ambient temps go above 85*f and heat the water in ambient temps below 55*f. More detail below...
Control function features...
Pump speed throttling:
To help maintain the most efficient conditions possible, you want to see the most heat energy transfer from the heat exchanger as possible. To measure this you look to the delta temperature between the input and output of the heat exchanger. If the delta temperature is low then there is little energy being transferred. To improve situations like this it is necessary to slow the pump down to allow the water to remain in the heat exchanger for a longer period on time allowing the most transfer of energy possible. Adversely when the delta temps are high, the heat exchanger is being efficient and this allows you to pump higher volumes of water and increase the pump speed. The controller allows three possible speeds... 33%, 66% and 100%. It does this by using a PWM signal.
Heat Exchanger Fan control and water spray:
The fans are meant to keep the heat exchanger as cool as possible in hot weather conditions and a water spray can be used automatically when ambient temps are high or on demand by the user in conjunction with the chiller. The controller simply monitors the output temperature of the heat exchanger and when temps reach 85*f, the fans turn on. When output temp has settled below 81*f, the fans turn off for a 4 degree hysteresis. The fans and water spray will also come on when ambient temps reach 95*f.
Chiller/Heater (Heat Pump) Control:
The heat pump unit is in addition to the heat exchanger. After the water has been processed in the heat exchanger, it can be further processed by running through a thermoelectric cooler/heater to allow either greater than 100% AWIC efficiency or to heat the air to aid in cold start and warm up conditions when running E85.
This idea was spawned from the ice box idea. Though it may not be as efficient or effective as an ice box, it does have it's advantages. For one, once the ice is gone, there is no cooling... with the heat pump, it will remain active forever and without any maintenance or moving parts. Two, it can be used to heat the water allowing the AWIC to heat the air going into the engine for previously mentioned reasons.
The heat pump is controlled with two relays that reverse the polarity to the thermoelectric coolers. When ambient air is greater than 95*f, the chiller is active (Goes off @ 83*f). It will also activate when delta temps in the heat exchanger are below 5*. When ambient temps are bellow 55*f, the heater is active (Goes off at 65*f). The chiller can also be use On-Demand) for those special occasions when you would like to race and have an ice box effect.
The construction of the unit needs to be completed as of yet.
Here are some pics of the finished controller...
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HolyCrapItsFast
Drinks beer!
A few months. I'm loving Arduino!
HolyCrapItsFast
Drinks beer!
Oh and Ray and I have been throwing around an idea for the past year... We have committed ourselves to achieving this goal. His father is on board 100%
Here is your one and only clue!
Here is your one and only clue!
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