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The investigation of the effect of thermal barrier coating on the performance of Stirling engine

✍ Scribed by Halit Karabulut; Can Çιnar; Fatih Aksoy

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
244 KB
Volume
33
Category
Article
ISSN
0363-907X

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✦ Synopsis

The shuttle heat transfer is one of the reasons reducing the performance of Stirling engines. This study is concerned with the reduction in shuttle heat transfer by coating the displacer. The displacer of a gamma type Stirling engine was coated with a layer of yttria-stabilized zirconia (YSZ), and the effect of the coating on the engine performance was evaluated by comparing speed-power and speed-torque characteristics of the engine with coated and uncoated displacers. Characteristics were obtained for 700, 800 and 9001C heater temperatures. At each stage of the heater temperature, the charge pressure ranged from 1 to 3.5 bars with 0.5 bar increments. At 9001C heater temperature and 3 bars charge pressure, the shaft power before coating was 34.9 W, after coating the power increased to 43.8 W, which corresponds to a 25% increment. The temperature applied to the engine did not cause any damage on the coating layer.

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