[borh375]

> windmill can not only provide mechanical energy, but also thermal energy. The problem is that almost nobody knows this.

It can also provide A/C to cool a house then. The problem is that almost nobody knows this, except Einstein of course https://en.m.wikipedia.org/wiki/Einstein_refrigerator

[fy20]

The vapour absorption cycle is similar in that it requires no moving parts. It's commercially used in caravan fridges, where propone is burnt as a heat source.

[mhh__]

And Szilard