An efficient method to harvest low-grade waste heat as
electricity may be possible using reversible ammonia batteries, according to
Penn State engineers.
"The use of waste heat for power production would allow
additional electricity generation without any added consumption of fossil
fuels," said Bruce E. Logan, Evan Pugh Professor and Kappe Professor of
Environmental Engineering. "Thermally regenerative batteries are a
carbon-neutral way to store and convert waste heat into electricity with
potentially lower cost than solid-state devices."