The oil had to pass through a heat exchanger to cool it down.

There he made important developments in the field of heat exchangers.

They are only practical for low power levels, without very effective heat exchangers.

Then it is recycled back into the first heat exchanger.

This may be achieved directly or through a heat exchanger.

Although often reported as "heat exchangers", these use a different technique.

Such heat exchangers are, for example, in domestic central heating systems.

On the other side of the heat exchanger, cooled water is produced.

It leaves the heat exchanger at room temperature (point a).

And I can't work on the heat exchanger from outside of the suit.