Assertion: steam engine's efficiency | /r/HasProperty | low
Facets:
value: in tesla's time
type: TEMPORAL
value: at idle
type: DEGREE
Source sentences:
text: At idle, the thermal efficiency is low, since the only usable work being drawn off the engine is from the generator.
text: A steam engine has low efficiency.
text: In Tesla's time, the efficiency of conventional turbines was low because turbines used a direct drive system that severely limited the potential speed of a turbine to whatever it was driving.
text: The least efficient, OTEC, uses the temperature difference of ocean water on the surface and ocean water from the depths, a small difference of perhaps 25 degrees Celsius, and so the efficiency must be low.