Assertion: steam engine's efficiency | /r/HasProperty | limited by low temperature differential
Facets:
value: relatively
type: DEGREE
value: on either side of the piston
type: LOCATION
Source sentences:
text: Maximum theoretical efficiency was limited by the relatively low temperature differential on either side of the piston; this meant that for a Watt engine to provide a usable amount of power, the first production engines had to be very large, and were thus expensive to build and install.