Neat.
A four-stage cascade has already demonstrated 2 W of cooling power over a 2 Kelvin temperature lift.
Well, they’ve got a long way to go to manage 20-40° temperature lift needed to replace a cold climate heat pump.
By connecting multiple stages in series, each separated by one-way pressure valves, larger temperature lifts can be achieved. “This allows us to bridge temperature differences of several degrees, for example from 5 C up to 40 C in typical applications,” Vogel said.
Yes, I read that part too.
20 segments, targeting a 20 Kelvin temperature span and approximately 100 W of cooling capacity.
100w is still a very long way to go in scaling to 1-10 kw. Hopefully it scales; always good to have increasing efficiency in climate control when our planet is warming
Even just replacing Peltier coolers would be great. Solid state cooling is so handy we use Peltier coolers a fair amount despite their poor efficiency.
