tables indicates that the Stirling engine with thermal storage has very advantageous characteristics for application to vehicles. It is possible to drive a city bus. taxi, delivery truck, or passenger car around all day, without any noise, without using liquid fossil fuel and without exhaust emissions from the vehicle. Moreover, as Mcijer (1970a) pointed out. the system permits the interior of the vehicle to be heated by engine waste heat. In vehicles with electric propulsion, interior heating has always been a particularly difficult problem, especially in cold climates.

A more recent study by Asselman el al. (1977) of automotive applications of Stirling engines with thermal energy storage was directed particularly to the compact commuter passenger car.

Independently. Folsom et a I. (1977) considered a number of automotive propulsion schemes using thermal storage concepts and concluded that the Stirling engine had substantial advantages over Brayton and Rankinc cycle engines.

The safety of high-temperature thermal-storage systems was considered by Boser (1977) with an account of the accumulated experimental experience at Philips.

Intense effort is presently being invested in the United States on the development of Stirling engines for automotive purposes, using gasoline or diesel fuel with direct heating. The wisdom of this is questionable. Internal combustion engines are perfectly adequate for use where their noise, exhaust emission, and need for distillate fuels can be tolerated. Stirling engines can probably never be made as cheap and reliable as internal combustion engines have become in the century of effort devoted to them.

A better use of the time and money now being spent might be to develop Stirling engines with thermal-energy storage as automotive propulsion systems for the electric economy that lies ahead. In the electric economy, liquid distillate fuels will be in relatively short supply and available at premium prices. Electric energy will be low cost by comparison. The electric energy will be derived from coal combustion, from nuclear fission reactors and. in the twenty-first century, from large scale photelectric conversion of solar power and by nuclear fusion.

It is conceivable that in the electric economy Stirling engines with thermal-energy storage will become the primary vehicle propulsion system.

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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