Exploration of a Stirling engine and generator combination for air and helium media

Shufat, Salem Alarabi; Kurt, Erol; Çınar, Can; Aksoy, Fatih; Hançerlioğulları, Aybaba; Solmaz, Hamit

doi:10.1016/j.applthermaleng.2019.01.053

Cited by 20 publications

(21 citation statements)

References 22 publications

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“…This is attributable to the low cooling efficiency of the procured Stirling engine. Also observed was the higher rotation speed of the flywheel with increasing temperature as in (Shufat, Kurt, Cinar, Aksoy, Hançerlioǧullari, & Solmaz, 2019). As temperature increases, the vapour pressure contributes to the faster expansion of gases in the hot cylinder.…”

Section: Resultsmentioning

confidence: 81%

Electricity Generation Using a Hybridized Zeolite Adsorption Heat Pump and Heat Engine

Labik¹,

Kwakye-Awuah²,

Sefa-Ntiri³

et al. 2020

APR

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The use of adsorption in Thermal Energy Storage has gained considerable research interest of late. Some applications have focused on the use of TES for transformation of low temperature heat in applications such as cooling and heating. Zeolite and water have been studied as suitable materials. Their characteristics as environmentally friendly materials and high affinity makes them conspicuous. The unique properties of zeolites to hold adsorbed water/heat with very minimal loss is also significant. With the aid of a dynamo, a Stirling engine as heat engine and the adsorption energy storage system serving as heat pump was used to generate electricity. The relationship between electricity generation and temperature was investigated. The obtained average temperature and pressure of the zeolite - water adsorption heat pump was also compared with the basic adsorption cycle.

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Section: Resultsmentioning

confidence: 81%

Electricity Generation Using a Hybridized Zeolite Adsorption Heat Pump and Heat Engine

Labik¹,

Kwakye-Awuah²,

Sefa-Ntiri³

et al. 2020

APR

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“…Erol and Caliskan [8] compared performance of four mechanisms of beta-type Stirling engines with isothermal and kinematic analysis. At the same swept volume of 365 cm 3 and charged mass of 7.16 × 10 −4 kg, net 2 of 14 output works obtained by bell crank, slide crank, rhombic, and scotch yoke drive mechanisms are 12.85, 12.09, 15.49, and 12.91 J, respectively. Rhombic drive mechanism performed roughly 20 % better than others.…”

Section: Introductionmentioning

confidence: 98%

“…In recent years, capacity and efficiency of Stirling engines have been remarkably lifted and lots of effort were paid to implement the practical utilization of this technology [1]. Atmosphere gas like air, nitrogen, helium, and hydrogen can be adopted as working medium in Stirling engines [2,3]. Three main kinds of structure are exploited in Stirling engines, which are alpha-, beta-, and gamma-type.…”

Section: Introductionmentioning

confidence: 99%

Development of a Beta-Type Moderate-Temperature-Differential Stirling Engine Based on Computational and Experimental Methods

Cheng

Huang

2020

Energies

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Stirling engine is a favorable technique in the application of waste heat recovery or cogeneration system. This paper aims at developing a beta-type Stirling engine which is operated at moderate heating temperature (773–973 K). Rhombic drive mechanism is utilized to make coaxial motion of displacer and piston. Based on the proposed dimensions, a theoretical model combining thermodynamic and dynamic analysis is built to predict the performance of the Stirling engine. Thermodynamic analysis deals with variations of properties in each chamber while dynamic analysis handles the resultant shaft torque produced by the Stirling engine. Furthermore, a prototype engine is manufactured, and experimental test is carried out to validate the simulated results in this research. Under heating temperature of 973 K, charged pressure of 8 bar, rotation speed of 1944 rpm, shaft power of 68 W is obtained from the prototype Stirling engine. Power density is calculated to be 1.889 W-c.c.−1 by theoretical prediction and 1.725 W-c.c.−1 by tested result. The impact of the geometrical dimensions is investigated to survey the optimal piston diameter which is related to compression ratio and swept volume.

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“…Due to the external combustion feature, harmful exhaust emissions such as hydrocarbon (HC), carbon monoxide (CO), and carbon dioxide (CO 2 ) are much less and controlled compared to internal combustion engines. 17,18 Various power generation methods and machines are developed to meet energy demands using renewable energy sources. Stirling engines, one of these alternative power generating machines, can easily use many renewable energy sources due to their external combustion feature and have again taken their place at the top of the energy generation required due to positive developments in production technology compared to other power generation systems.…”

Section: Introductionmentioning

confidence: 99%

The examination of performance characteristics of a beta‐type Stirling engine with a rhombic mechanism: The influence of various working fluids and displacer piston materials

Erol

Çalışkan

2021

Int J Energy Res

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In this study, to develop a power generation system that can use renewable energy resources more efficiently, a beta-type Stirling engine with rhombic mechanism was designed and manufactured. Kinematic and thermodynamic analyses of a beta-type Stirling engine were performed numerically in the Fortran program.Volume and pressure changes depending on crankshaft angle of Stirling engine were made using the isothermal analysis. The effects of the basic parameters related to engine performance, such as working fluid mass, charge pressure, heater, and coolant temperatures, on the net work amount were investigated. Five different gases, including helium, air, nitrogen, carbon dioxide, and argon, were used as a working fluid in experimental studies. The effects of all these gases on engine performance characteristics were examined at charge pressures of 1 to 5 bar for two different displacer pistons made of stainless steel and titanium material. The performance characteristics of Stirling engine manufactured were tested using a specially designed electrical heater, at 727 C hot end and 27 C cold end temperature, depending on engine speed. In all experimental studies, maximum power output was acquired to be 215.48 W, at 4 bar and 550 rpm when a stainless steel displacer piston and helium gas as a working fluid were used, and maximum torque value was acquired to be 7.54 Nm, at 5 bar and 150 rpm. The lowest engine power output among maximum engine powers was acquired to be 34.66 W when argon gas was used as a working fluid at 3 bar and 300 rpm, using a displacer piston made of titanium material. Maximum power output acquired in the experimental studies using a stainless steel displacer piston and helium; it was determined that it is 72.12%, 73.69%, 241.49%, and 288.81% higher than the engine power acquired by nitrogen, air, carbon dioxide, and argon gases, respectively.

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Exploration of a Stirling engine and generator combination for air and helium media

Cited by 20 publications

References 22 publications

Electricity Generation Using a Hybridized Zeolite Adsorption Heat Pump and Heat Engine

Electricity Generation Using a Hybridized Zeolite Adsorption Heat Pump and Heat Engine

Development of a Beta-Type Moderate-Temperature-Differential Stirling Engine Based on Computational and Experimental Methods

The examination of performance characteristics of a beta‐type Stirling engine with a rhombic mechanism: The influence of various working fluids and displacer piston materials

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