Tactics for Controlling Heat in a High Current Bridge Rectifier?
Have you considered not making so much heat in the first place? You can use Schottky diodes which if well chosen will halve the power wasted. If you know what you are doing then look at some form of synchronous MOSFET rectifier. If you use low Rds(on) devices which at low voltages are not hard to find you will waste even less power.