Simulation, construction and testing of a two-cylinder solar Stirling engine powered by a flat-plate solar collector without regenerator

Tavakolpour, Ali Reza; Zomorodian, Seyed Mohammad Ali; Golneshan, Ali Akbar

doi:10.1016/j.renene.2007.03.004

Cited by 67 publications

(26 citation statements)

References 6 publications

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“…Heat transfer fluid contained in the receiver is then heated up to desirable working temperatures and pressures in order to generate electricity in a small engine attached to the receiver [62]. Engines currently under consideration include Stirling [63] and Brayton engines [64]. Several prototype dish-engine systems, ranging from 7kW to 25kW have been deployed in various locations in the USA.…”

Section: Parabolic Dish Collectorsmentioning

confidence: 99%

A review of solar collectors and thermal energy storage in solar thermal applications

2013

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Thermal applications are drawing increasing attention in the solar energy research field, due to their high performance in energy storage density and energy conversion efficiency. In these applications, solar collectors and thermal energy storage systems are the two core components. This paper focuses on the latest developments and advances in solar thermal applications, providing a review of solar collectors and thermal energy storage systems. Various types of solar collectors are reviewed and discussed, including both non-concentrating collectors (low temperature applications) and concentrating collectors (high temperature applications). These are studied in terms of optical optimisation, heat loss reduction, heat recuperation enhancement and different suntracking mechanisms. Various types of thermal energy storage systems are also reviewed and discussed, including sensible heat storage, latent heat storage, chemical storage and cascaded storage. They are studied in terms of design criteria, material selection and different heat transfer enhancement technologies. Last but not least, existing and future solar power stations are overviewed.

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Section: Parabolic Dish Collectorsmentioning

confidence: 99%

A review of solar collectors and thermal energy storage in solar thermal applications

2013

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“…The first theoretical approach towards the estimation of the engine power, known as Schmidt's theory [1,[3][4][5], was introduced for the kinematic type of the Stirling engines. Tavakolpour-Saleh et al [6] have investigated the performance of a kinematic low-temperature Stirling engine with two cylinders connected to one crankshaft. They have presented a novel theory for the prediction of real gas temperature to calculate the engine's power.…”

Section: Introductionmentioning

confidence: 99%

From Beale Number to Pole Placement Design of a Free Piston Stirling Engine

Zare

Omidvar

2017

Archive of Mechanical Engineering

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In this paper, pole placement-based design and analysis of a free piston Stirling engine (FPSE) is presented and compared to the well-defined Beale number design technique. First, dynamic and thermodynamic equations governing the engine system are extracted. Then, linear dynamics of the free piston Stirling engine are studied using dynamic systems theory tools such as root locus. Accordingly, the effects of variations of design parameters such as mass of pistons, stiffness of springs, and frictional damping on the locations of dominant closed-loop poles are investigated. The design procedure is thus conducted to place the dominant poles of the dynamic system at desired locations on the s-plane so that the unstable dynamics, which is the required criterion for energy generation, is achieved. Next, the closed-loop poles are selected based on a desired frequency so that a periodical system is found. Consequently, the design parameters, including mass and spring stiffness for both power and displacer pistons, are obtained. Finally, the engine power is calculated through the proposed control-based analysis and the result is compared to those of the experimental work and the Beale number approach. The outcomes of this work clearly reveal the effectiveness of the control-based design technique of FPSEs compared to the well-known approaches such as Beale number.

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“…Waste-heat [3,4], solar [5][6][7], biomass [8], low-temperature [9], and small Stirling engine systems [10,11] are examples of new power generation applications. Among these power systems, the solar Stirling engine is the most promising technology.…”

Section: Introductionmentioning

confidence: 99%

Biaxial-Type Concentrated Solar Tracking System with a Fresnel Lens for Solar-Thermal Applications

2016

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Abstract:In this paper, an electromechanical, biaxial-type concentrated solar tracking system was designed for solar-thermal applications. In our tracking system, the sunlight was concentrated by the microstructure of Fresnel lens to the heating head of the Stirling engine and two solar cells were installed to provide the power for tracking system operation. In order to obtain the maximum sun power, the tracking system traces the sun with the altitude-azimuth biaxial tracing method and accurately maintains the sun's radiation perpendicular to the plane of the heating head. The results indicated that the position of heating head is an important factor for power collection. If the sunlight can be concentrated to completely cover the heating head with small heat loss, we can obtain the maximum temperature of the heating head of the Stirling engine. Therefore, the temperature of heating head can be higher than 1000˝C in our experiment on a sunny day. Moreover, the results also revealed that the temperature decrease of the heating head is less than the power decrease of solar irradiation because of the latent heat of copper and the small heat loss from the heating head.

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Simulation, construction and testing of a two-cylinder solar Stirling engine powered by a flat-plate solar collector without regenerator

Cited by 67 publications

References 6 publications

A review of solar collectors and thermal energy storage in solar thermal applications

A review of solar collectors and thermal energy storage in solar thermal applications

From Beale Number to Pole Placement Design of a Free Piston Stirling Engine

Biaxial-Type Concentrated Solar Tracking System with a Fresnel Lens for Solar-Thermal Applications

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