Effects of the regenerator on engine performance of a rhombic drive beta type stirling engine

2021 ◽  
pp. 1-9
Author(s):  
Fatih Aksoy ◽  
Hamit Solmaz ◽  
Muhammed Arslan ◽  
Emre Yılmaz ◽  
Duygu İpci ◽  
...  
Keyword(s):  
Engine Performance ◽  
Stirling Engine

Optimization of Stirling Engine Performance Based on Multipoint Approximation Technique

1994 ◽  
Author(s):  
Vassili V. Toropov ◽  
Henrik Carlsen
Keyword(s):  
Computing Time ◽  
Engine Performance ◽  
Stirling Engine ◽  
Optimization Techniques ◽  
Approximation Technique ◽  
Working Cycle ◽  
Design Variables ◽  
Stirling Engines ◽  
Multipoint Approximation ◽  
Conventional Optimization

Abstract The ideal Stirling working cycle has the maximum obtainable efficiency defined by Carnot efficiency, and highly efficient Stirling engines can therefore be built, if designed properly. To analyse the power output and the efficiency of a Stirling engine, numerical simulation programs (NSP) have been developed, which solve the thermodynamic equations. In order to find optimum values of design variables, numerical optimization techniques can be used (Bartczak and Carlsen, 1991). To describe the engine realistically, it is necessary to consider several tens of design variables. As even a single call for NSP requires considerable computing time, it would be too time consuming to use conventional optimization techniques, which require a very large number of calls for NSP. Furthermore, objective and constraint functions of the optimization problem present some level of noise, i.e. can only be estimated with a finite accuracy. To cope with these problems, the multipoint explicit approximation technique is used.

A14 Study on SOFC-Stirling Engine Combined System : Analysis of Engine Performance

2005 ◽  
Vol 2005.9 (0) ◽  
pp. 43-46
Author(s):  
Sanyo Takahashi ◽  
Yasuyuki Kaneko ◽  
Eiichi Shinoyama ◽  
Hiroshi Sekiya ◽  
Iwao YAMASHITA
Keyword(s):  
System Analysis ◽  
Engine Performance ◽  
Stirling Engine ◽  
Combined System

A01 Effects of Bypass Tube on a Single Piston Type Stirling Engine Performance

2009 ◽  
Vol 2009.12 (0) ◽  
pp. 7-8
Author(s):  
Shinji OKAMOTO ◽  
Hiroaki FUTAGI ◽  
Kazuhiro HAMAGUCHI
Keyword(s):  
Engine Performance ◽  
Stirling Engine

CFD analysis of radiation impact on Stirling engine performance

2017 ◽  
Vol 152 ◽  
pp. 354-365 ◽  
Author(s):  
R. Ben-Mansour ◽  
A. Abuelyamen ◽  
Esmail M.A. Mokheimer
Keyword(s):  
Engine Performance ◽  
Stirling Engine ◽  
Cfd Analysis

Thermodynamic Analysis and Performance Investigation of an Alpha-Type Stirling Engine

2012 ◽  
Author(s):  
E. D. Rogdakis ◽  
I. P. Koronaki ◽  
G. D. Antonakos
Keyword(s):  
Thermodynamic Analysis ◽  
Power Output ◽  
System Performance ◽  
Engine Performance ◽  
Energy Systems ◽  
Stirling Engine ◽  
Operating Conditions ◽  
System Capacity ◽  
Stirling Engines ◽  
Alpha Type

The Stirling engine, as an external combustion engine, can be powered using a variety of heat sources including the continuous combustion process thus achieving significantly reduced emissions. Energy systems powered by a Stirling engines meet the needs of various applications not only in the domestic and industrial sections but in military and space gadgets as well. Stirling engines can also be used as cryocoolers in medical applications where they are called to achieve very low temperatures. Each energy system using Stirling Engine optimizes its performance in specific operating conditions. The system capacity depends on the geometric and structural characteristics, the design of the unit, the environment in which the engine is allowed to it works as well as the size of the load. In order to study the function and the efficiency of Stirling energy systems a CHP SOLO 161V -ALPHA TYPE STIRLING ENGINE was installed in the Laboratory of Applied Thermodynamics of NTUA. A thermodynamic analysis has been conducted using appropriate computing codes. The effect of each independent variable on the system performance was investigated. The study was divided into distinct levels of detail, bringing out each variable. Initially, the performance of the heat engine was examined assuming an ideal regenerator. Then, the effectiveness of the regenerator was evaluated as well as its effect on the engine performance, while the effect of the pressure drop and the energy dissipation on the engine efficiency was also investigated. Measurements were conducted using different operational conditions concerning the heating load of the engine. The effect of the geometrical characteristics of the regenerator on power output and engine performance was examined based on the results of a simulation analysis. Moreover, the power output and the efficiency of the machine in relation to the thermal load of the unit and the average pressure of the working medium were investigated. Major performance input characters affecting geometrical and operational parameters of the unit were identified leading to unit optimization with specific combinations leading to increased system performance. Simulation results were validated by comparison to corresponding values obtained by relative experiments conducted with the SOLO unit. Finally, a sensitivity analysis was performed in order to investigate the effect of the operating conditions on the performance of an alpha type Stirling Engine.

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