Eficiência Rankine (aprox.)

The Rankine Efficiency (approx.) Calculator provides a quick estimate of the thermal efficiency of an ideal Rankine cycle using the Carnot approximation. The formula η ≈ 1 − T_C/T_H relates the absolute temperatures of the hot source (T_H) and cold sink (T_C), both in Kelvin. This approximation is valid for ideal cycles without irreversibilities and serves as a theoretical upper limit.

To use the calculator, enter T_H and T_C. The result is the maximum possible efficiency for a cycle operating between these temperatures. Real Rankine cycles have losses such as friction and irreversible heat transfer, resulting in lower efficiencies. This tool is useful for engineers and students comparing real performance to ideal.

Use cases include conceptual designs of thermal power plants, where the impact of different operating temperatures on efficiency is assessed. It is also helpful in thermodynamics classes to demonstrate the Carnot limit. Caution: the approximation does not consider working fluid properties, such as water steam, which can deviate significantly from the Carnot cycle.

Avoid using this calculator for real cycles without adjustments. Real efficiency will always be lower. For accurate calculations, consider more complex models including irreversibilities. The calculator serves as a starting point to understand the fundamentals of thermal efficiency.