Power output for a heat engine is the amount of work the engine can perform per unit time. It is typically measured in units of watts (W) or horsepower (hp).
The power output of a heat engine is calculated by multiplying the engine's thermal efficiency by the rate of heat transfer from the hot reservoir to the cold reservoir. This can be represented by the equation P = Qh x η, where P is power output, Qh is the rate of heat transfer, and η is the thermal efficiency.
The power output of a heat engine can be affected by several factors, including the temperature difference between the hot and cold reservoirs, the type of working fluid used, and the design and efficiency of the engine's components.
The power output of a heat engine is directly proportional to its efficiency. This means that as the efficiency of the engine increases, so does its power output. Therefore, improving the efficiency of a heat engine can result in an increase in its power output.
No, according to the first and second laws of thermodynamics, the power output of a heat engine cannot be greater than its input power. This means that the engine can never produce more work than the amount of heat it receives from the hot reservoir.