scholarly journals Basic Study on the Regenerator of Stirling Engine (I) -The influence of the heat exchange effectiveness of the regenerator on the engine power-

2002 ◽  
Vol 27 (1) ◽  
pp. 33-38 ◽  
Keyword(s):  
Heat Exchange ◽  
Stirling Engine ◽  
Basic Study ◽  
Heat Exchange Effectiveness ◽  
Engine Power

scholarly journals The Power and Efficiency Analyses of the Cylindrical Cavity Receiver on the Solar Stirling Engine

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5798
Author(s):  
Ji-Qiang Li ◽  
Jeong-Tae Kwon ◽  
Seon-Jun Jang
Keyword(s):  
Heat Exchange ◽  
Inclination Angle ◽  
Wall Temperature ◽  
Area Ratio ◽  
Stirling Engine ◽  
Open Area ◽  
Engine Efficiency ◽  
Aperture Ratio ◽  
Inclination Angles ◽  
Engine Power

The technique of solar dish and Stirling engine combination is the most challenging and promising one. For the efficient conversion of the externally concentrated heat to the usable power, we studied the influences of the wall temperature, inclination angle, and open area ratio of the receiver on the Stirling engine power and efficiency. The theoretical analysis of the heat exchange element of the solar Stirling engine was performed, and the simulation model of the cavity absorber was built and analyzed. The temperature cloud and heat loss trends of the receiver under different wall temperatures, inclination angles, and opening ratios were illustrated. When the wall temperature of the absorber changes from 700 to 1000 K, the efficiency of the engine has increased by 8.8% from 21.34% to 30.11%. The higher the temperature, the higher the efficiency. As the inclination angle of the absorber increases from 0° to 60°, the efficiency of the engine is increased by 7.7% from 21.1% to 28.8%. With the increases of the aperture ratio, the engine output and efficiency reduced. The engine efficiency at the aperture ratio of 0.5 is 4% larger than that at the aperture ratio of 1.

Performance of a Stirling Engine Regenerator Having Finite Mass

1986 ◽  
Vol 108 (4) ◽  
pp. 669-673 ◽  
Author(s):  
J. D. Jones
Keyword(s):  
Finite Element ◽  
Pressure Variation ◽  
Stirling Engine ◽  
System Model ◽  
Finite Mass ◽  
Element System ◽  
The Matrix ◽  
Cyclic Variations ◽  
Good Agreement ◽  
Engine Power

The performance of a Stirling engine regenerator subjected to sinusoidal mass flow rate and pressure variation is analyzed. It is shown that cyclic variations in the temperature of the matrix due to its finite mass lead to an increase in the apparent regenerator effectiveness, but a decrease in engine power. Approximate closed-form expressions for both of these effects are deduced. The results of this analysis are compared with the predictions of a finite-element system model, and good agreement is found.

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