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<t>STM Power has shelved their Heat Power Unit HPU. Unfortunately. They did require a high side temp of 1400 deg F to operate the Beta units that were built. Most waste heat is not of this quality. If you have waste heat of 1400 deg F or higheer and of significant quantities, I have some solutions. ...

<t>Another possible, energy free solution may be a heat pipe. If you tune pressure, volume etc of refrigerant in a pipe and have two temperatures of enough delta, you could possibly use a heat pipe. It works this way. The cold side condenses the liquid. Hopefully the cold side is the high side of th...