Heat2Power, co-founded by Profs. Stephen Forrest and Andrej Lenert, uses high-efficiency, low-cost thermophotovoltaic technology to turn stored heat into energy.
Just because of the amount of heat needed to produce a meaningful amount of energy. Just looking at recent news on TPV, and it looks like newer tech is only getting about 40% conversion efficiency, which is not super great.
The real problem with TPV is the type of heat it can use, which just from looking is a minimum of 1900 C/3450 F. This is because, like solar, it’s capturing photons the heat source kicks out, then “traps” them and runs them down a wire to store someplace (I’m over simplifying this of course).
To use it as this company plans, need to radiate heat from many sources to one central location to get those kinds of temps, which is incredibly challenging . It’s not like you could just slap a bunch of small capture points together from a large number of kinda hot things and batch them together.
Just because of the amount of heat needed to produce a meaningful amount of energy. Just looking at recent news on TPV, and it looks like newer tech is only getting about 40% conversion efficiency, which is not super great.
The real problem with TPV is the type of heat it can use, which just from looking is a minimum of 1900 C/3450 F. This is because, like solar, it’s capturing photons the heat source kicks out, then “traps” them and runs them down a wire to store someplace (I’m over simplifying this of course).
To use it as this company plans, need to radiate heat from many sources to one central location to get those kinds of temps, which is incredibly challenging . It’s not like you could just slap a bunch of small capture points together from a large number of kinda hot things and batch them together.