553 Rankine Cycle Engine Cost

The installed costs of waste heat recovery Rankine cycle systems producing electrical power vary over a significant range. This variation is caused primarily by output power levels, production quantity, temperature range available, and heat exchanger requirements. In DG applications, where the Rankine cycle engine is combined with primary engines to produce less than 250 kW total, installed costs of $300 to $600/kW are estimated for production quantity Rankine cycle engines.

300 400 500 600

Maximum Cycle Temperature, deg F


Simple cycle efficiency as a function of temperature.

S 20





A/ • /



, 4

* +


, *

Heat Available, millions BTU/hr


1 10

Heat Available, millions BTU/hr


Potential Rankine cycle power output (kW) as a function of heat rate.

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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