murena with ac?

[Matra_Hans]

Hi Hisashi,
Welcome. You are new to this form but you are certainly not new to the Murena as I have seen your name years back in other forums.

Regards Hans

[Anders Dinsen]

Hisashi, welcome to the forum! Good to have your input here and on this thread. I hope all is well with you and your Murena!

/Anders

[Oskar]

think im going for the same setup
http://www.youtube.com/watch?v=k2pvo00Cq4c

how much does power (amps) does the car demands simultainiously, 150w 200w?

say 450w peltier and then a  650/12= 55amp generator is needed.  hmm
and a waterpump 50w..   

[phil75]

Welcome Hisashi

photos of your Murena?

[Oetker]

Just keep in mind that a Peltier is not very economic with energy.
If you take a Peltier of about 450 W consumed power, there wil be only about 250 W cooling energy left.
That is not much to cool the car, so you need al last 2, wich come to 900 Watt and 500 usefull Watts..
At 13 Volt that will be P=UxI = 900=13xI    I= 69 Amp.
You need serious wiring and a powerfull generator.
Also 2 very big heatsinks.
a lot of heat is generated at the other side of the Peltier.
How do you get rid of that?

I use a Awco to cool. (All Windows Can Open)

[michaltalbot]

  You want to kill me today?  AWCO 

[lewisman]

Slightly off topic, but AWOC + SFO (sunroof fully open) would suit me

Both Bagheeras that I owned had large fabric sunroofs which were almost as good as a targa top.  I have a dreadful, leaky glass sunroof on my murena which is pretty useless. 

Has anyone fitted a fabric type sunroof to a murena?  A removable roof panel would also be worth considering...

[Bart_Maztra]

On the other hand, I may try an alternative solution, using a number of peltier elements. I have five peltier elements, each 4 square inches big. I am thinking of creating a duct where they are mounted, dividing the duct in two, with some serious heat sinks on each side. Then blow air from the cold side into the car and venting the hot side to the outside. Right now it is just a thought, no serious planning has taken place, but I have studied the possibilities and challenges involving peltier elements.

Some years ago i made a mini fridge by using a peltier element.  A total failure!
The peltier element get realy hot on one side, and very cold at the other side. The peltier element is just a few millimeter thick. So there is just a small space between the hot and cold area.  The problem i had is to make proper heat isolation. Keeping the heat away from the cold.  A big part of the heat was heating up the surrounding of the peltier. The heatsink on the inside of the fridge was realy cold, but the heatsink on the outside was heating up the housing of the fridge.

Result:  the temperature of the fridge has raise a little after 30 minutes of heavy power consumption.

[Jon Weywadt]

Some years ago i made a mini fridge by using a peltier element.  A total failure!
--

Hi Bart.
I am aware of the challenges using peltier elements. The problems you encountered are "standard", yet there are portable coolers using peltier elements, that work quite well.

The challenge is to move the heat and cold from the heatsinks and Oskar provided the idea for the solution earlier in this thread. By using water cooled heatsinks, I plan to transport the cold into the Murena's heater core where the blower will dissipate it in the cabin. The heat I plan to send to a second heater core element placed out in front of the radiator. Thermostats and electric pumps should ballance the whole setup.