Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   JANUARY 2017 , Volume 16 , Number 10 #F0070; Page(s) 448 To 458.
 
Paper: 

THERMODYNAMIC ANALYSIS OF PERFORMANCE PARAMETER OF A NOVEL 3 CYLINDER STIRLING ENGINE CONFIGURATION

 
 
Author(s):  AMARLOO ALI, KESHAVARZ VALIAN ALI*, BATOOEI ALIREZA, ALIZADEHNIA SIAMAK
 
* DEPARTMENT OF MECHANICAL ENGINEERING, K.N. TOOSI UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN
 
Abstract: 

Various configurations for Stirling engines have been presented. In Beta and Gamma type configurations, a displacer moves the working fluid between hot and cold sources. In the Alpha type there is no such part and it has a much simpler structure than the Beta and Gamma type. Therefore in this study, a novel configuration is introduced for Stirling engine where the displacer is replaced by two pistons and cylinders. With this replacement, the new configuration can be called 3-Cylinders Gamma configuration for Stirling engine. Similar to Alpha type engine, this configuration has a simpler structure and manufacturing process. For evaluation of new configuration, a simulated model of fabricated Gamma Stirling engine is prepared based on new configuration and geometry of ST-500 engine. The modeling is developed in GT-Suit software which is an industry-leading simulation tool.
Maximum error between the experimental results and simulation of the new engine is about 20 percent for heat consumption and 14.7 percent for power generated. Thermodynamic analysis of performance parameters is done after the validation. The thermodynamic analysis results indicate that the increment of engine speed does not have appropriate effect on the performance and this led to engine efficiency reduction. On the other hand, increasing the pressure and hot source temperature led to improvement in engine performance and higher thermal efficiency.

 
Keyword(s): STIRLING ENGINE, GAMMA CONFIGURATION, 3-CYLINDER CONFIGURATION, THERMODYNAMIC ANALYSIS, PERFORMANCE PARAMETERS
 
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