precool

To alleviate this, the car can be set to "precool" whilst on charge.

Modern dilution refrigerators can precool the He with a cryocooler in place of liquid nitrogen, liquid helium, and a 1 K bath.

The design incorporates an inner vacuum can, which is used to initially precool the machine from room temperature down to the base temperature of the pulse tube cooler (using heat-exchange gas).

The lowest temperature, reached with single-stage PTR's, is just above 10 K. However, one PTR can be used to precool the other.

A precooled jet engine is a concept for high speed jet engines that features a cryogenic fuel-cooled heat exchanger immediately after the air intake, to precool the air entering the engine.

Within the atmosphere, hydrogen fuel would be used in a heat exchanger to precool air entering a high overall pressure ratio turbojet-like engine cycle, before being burnt with the air in a rocket motor, to produce a very high velocity propulsive jet.

Post-1990 models had a feature whereby the heater or air conditioner could be set to prewarm or precool the cabin to a specified temperature using power from the AC line once charging was complete, thus minimizing use of the batteries for climate control.