Final answer:
An electric pump is relevant for calculating thermal efficiency, which evaluates how effectively a device converts heat into output, pertinent in systems that move fluid like a flush system.
Step-by-step explanation:
The subject of this question pertains to the role of electric pumps in ensuring an effective flushing system. When considering thermal efficiency, an electric pump is a relevant example for calculation. Thermal efficiency is a measure of the efficiency by which a device converts heat into work or output. It's a dimensionless performance measure for devices like engines, boilers, heaters, and pumps which transfer or convert heat energy from a source to useful work. Calculating thermal efficiency for an electric pump would involve understanding how much of the electrical energy consumed is converted into the hydraulic energy applied for moving fluid, such as in a flushing system, and how much is lost as heat.