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Study on Atmospheric Stirling Engine NAS-1
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English
Abstract
To get a simple and low cost Stirling engine that would be manufactured and used in any district of the world, a unique atmospheric Stirling engine named NAS-1 is under study at NIHON University.
NAS-1 was originally planned to be used for the solar field, so the cylinder head was designed to have a glass head at its top with the concentrated solar beam penetrating the glass.
NAS-1 uses a rubber diaphragm for the power piston, and it has proved to be very reliable and successful. It has James Watt's approximate linear motion link mechanisms (Watt link) for the main crank shaft, instead of the usual crossed head to eliminate liquid oil lubrication.
This kind of engine has been thought to furnish very simple, low cost and efficient power for future clean energy fields.
This engine design is simple, low in cost, and doses not involve problems of high pressure, and does not produce any pollutants whatsoever such as carbonic acid gas, NOx and others' pollution.
We succeeded in low temperature operations of the new design atmospheric Stirling engine NAS-1 and 2 engine has shown very well indicated output power in our testing.
By the experiments heated with electric heater, NAS-1 and 2 engine have shown very well indicated efficiency about 10 % at even a very low temperature difference of 200 °C.
Authors
Citation
Watanabe, H., lsshiki, N., Ohtomo, M., Watanabe, K. et al., "Study on Atmospheric Stirling Engine NAS-1," SAE Technical Paper 929390, 1992, https://doi.org/10.4271/929390.Also In
References
- Isshiki N. “Internal Combustion Stirling Engine” 2nd International Stirling Engine Conference 1984-6 Shanghai
- Isshiki N. Moriya N. “Study on Internal Combustion Stirling Engine” 3rd International Stirling Engine Conference 1986-6 Rome
- Isshiki N. Watanabe H. Shishido K. Watanabe K. “Studies on Internally Heated Solar Stirling Engine” 4th ICSE'88 Tokyo
- WATANABE H. Isshiki N. et al. “Studies on Nihon Universities' Atmospheric Stirling engine” 5th ISEC- 91 DOVROVNIK