Assertion: engine's power | /r/HasProperty | required
Facets:
Source sentences:
text: In small, low power engines this may simply consist of the walls of the hot space(s) but where larger powers are required a greater surface area is needed to transfer sufficient heat.
text: In small, low power engines this may simply consist of the walls of the cold space(s), but where larger powers are required, a cooler using a liquid-like water is needed to transfer sufficient heat.[citation needed]