What size heat exchanger for water to air?
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  1. #1
    Fellow Frogger! callipygous's Avatar
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    Default What size heat exchanger for water to air?

    What size heat exchanger do you think I should run for a water to air system? I'm going to install this due to space restrictions, instead of the more common air to air.

    I can probably save a bit of money by getting a second hand heater matrix These are common as butterflies and just as cheap. Though possibly a bit smaller...

    There is a good looking matrix that measures 26 x 14 x 2 cm though I feel it may be a bit slim for my application, though I could be wrong.

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  2. #2
    Demannu-facturing! Demannu's Avatar
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    Air conditioner condensors work well.

    The pump and the heat exchanger itself are the expensive bits, and you can't really shortcut on them!
    Scotty

    Melbourne - Dandenong Ranges

    1956 Peugeot 403 - 'Francois' - resto project

    1969 Peugeot 504 - 'Pascal' - daily driver project

    1970 Peugeot 404 Utility - 'Brutus' - resto project

    1978 Peugeot 604 - as yet unnamed - V6 on straight LPG

    1987 Peugeot 505 - as yet unnamed - project car

    1999 Peugeot 406 Coupé - 'Chloe' - 5 speed manual

    2011 Peugeot 3008 XTE HDi - 'Zoe' - hatchback on steroids

    2014 Peugeot RCZ - 'Remy'

    1999 Range Rover 4.6 HSE - 'Grover' - tow car

  3. #3
    Fellow Frogger! callipygous's Avatar
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    Yeah, the pumps are about $100 and the water to air coolers are from $150.

    Can't really fit an air conditioner condenser as well as the larger radiator and air conditioner condenser that is already on there for air conditioning all together.

    Space concerns is why I am going water to air.

  4. #4
    Demannu-facturing! Demannu's Avatar
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    Are you sure you're out of space? I find that there's heaps of room between the radiator and the grille on a 504. Put the intercooler radiator at the front, then the aircon, then the radiator. If you need more room, remove the fan from the air conditioner condensor and wire the feed line for it via a diode to the electromagnetic clutch on the engine fan.

    Works best if you put a shroud between the airconditioner condensor and the radiator. In fact, it works much better than the original electric fan!
    Scotty

    Melbourne - Dandenong Ranges

    1956 Peugeot 403 - 'Francois' - resto project

    1969 Peugeot 504 - 'Pascal' - daily driver project

    1970 Peugeot 404 Utility - 'Brutus' - resto project

    1978 Peugeot 604 - as yet unnamed - V6 on straight LPG

    1987 Peugeot 505 - as yet unnamed - project car

    1999 Peugeot 406 Coupé - 'Chloe' - 5 speed manual

    2011 Peugeot 3008 XTE HDi - 'Zoe' - hatchback on steroids

    2014 Peugeot RCZ - 'Remy'

    1999 Range Rover 4.6 HSE - 'Grover' - tow car

  5. #5
    Fellow Frogger! callipygous's Avatar
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    In front of the radiator is where the condenser currently goes.

    Do you really think that I should have three radiators, one behind the other. Doesn't sound very efficient! I don't know if there would be the width, either.

    I'd prefer a smaller radiator that's thicker behind the left hand headlight.

  6. #6
    Demannu-facturing! Demannu's Avatar
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    Quote Originally Posted by callipygous View Post
    In front of the radiator is where the condenser currently goes.

    Do you really think that I should have three radiators, one behind the other. Doesn't sound very efficient! I don't know if there would be the width, either.

    I'd prefer a smaller radiator that's thicker behind the left hand headlight.
    That's how 99% of road-going cars with front mounted intercoolers (be them water or air) are set up, including mine. In fact, I have 4. From the front: Intercooler, aircon condensor, oil cooler, radiator. I've never had any cooling problems with any of those systems.

    Remember that the intercooler is only going to be producing heat when you're working the engine hard. The rest of the time the air passing through it is virtually the same as ambient. So you may find a drop in the efficiency of your air conditioner if you're drag racing up the toowoomba range. Having said that, I haven't noticed it!

    Avoid putting anything behind headlights. Keep it all in the airflow.
    Scotty

    Melbourne - Dandenong Ranges

    1956 Peugeot 403 - 'Francois' - resto project

    1969 Peugeot 504 - 'Pascal' - daily driver project

    1970 Peugeot 404 Utility - 'Brutus' - resto project

    1978 Peugeot 604 - as yet unnamed - V6 on straight LPG

    1987 Peugeot 505 - as yet unnamed - project car

    1999 Peugeot 406 Coupé - 'Chloe' - 5 speed manual

    2011 Peugeot 3008 XTE HDi - 'Zoe' - hatchback on steroids

    2014 Peugeot RCZ - 'Remy'

    1999 Range Rover 4.6 HSE - 'Grover' - tow car

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