Quote:
Originally Posted by t vago
I would suggest placing these TEGs in the immediate vicinity of your upstream O2 sensor, and just behind and downstream of your downstream O2 sensor. If the O2 sensors can take the heat, the TEGs should also be fairly happy there.
Edit: And are you sure you want to rely on ambient air to generate your temperature differential? Seems like you're going to want to put some cooling fins on to take away this heat, and use some sort of forced airflow, at a minimum. Maybe a coolant loop would be better.
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You could include tube in tube design; where a larger square tube is placed over the cooling finns. The downstream side could end in a tapered nozzel to a Venturi that uses the exhaust stream to pull through cooling air over the cooling fins.