Conversion of thermal energy into electricity via a water pump operating in Stirling engine cycle

Slavin, V. S.; Bakos, G.C.; Finnikov, K. A.

doi:10.1016/j.apenergy.2008.10.018

Cited by 20 publications

(16 citation statements)

References 3 publications

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“…Stirling engines operate in a closed cycle with a working fluid of Helium. Working fluid is circulated in two working spaces (compression space and expansion space) and three heat exchangers (a cooler, a regenerator and a heater) [2]. A solar free piston Stirling engine (FPSE) is presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

Exergy loss analysis of the regenerator in a solar Stirling engine

Yang

Liu

2018

Therm sci

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Original scientific paper https://doi.org/10.2298/TSCI170911058YIn order to evaluate the irreversibility and exergy losses of the regenerators in a solar beta-type free piston Stirling engine due to flow friction, 1-D thermodynamic model to quantify exergy loss in the regenerators are built. The effects of important parameters, such as oscillating flow pressure drop, the exergy loss to flow friction, the exergy losses to conduction heat transfer at the hot and cold side of the regenerator and the percentage of Carnot efficiency of Stirling engine are presented and studied in detail. Results show that exergy loss decreases with the increase of the porosity and matrix diameter. As for the regenerator length, there is an optimum value that is equal to 0.035 m where the exergy loss is minimal and the percentage of Carnot efficiency is maximal. Therefore, some parameters should be selected reasonably to meet the overall design requirements of a solar Stirling engine.

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Section: Introductionmentioning

confidence: 99%

Exergy loss analysis of the regenerator in a solar Stirling engine

Yang

Liu

2018

Therm sci

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“…The concept of liquid piston engine was firstly reported in the available literature in 1971 and denoted as Fluidyne engine [7]. Together with the basic system layout, the several modifications were proposed [8][9][10]. Slavin et al [8] proposed a new scheme of engine that is characterized by use of offset heat exchangers instead of the usual heater and cooler.…”

Section: Introductionmentioning

confidence: 99%

“…Together with the basic system layout, the several modifications were proposed [8][9][10]. Slavin et al [8] proposed a new scheme of engine that is characterized by use of offset heat exchangers instead of the usual heater and cooler. The system layout was firstly reported by [9].…”

Section: Introductionmentioning

confidence: 99%

“…The system layout was firstly reported by [9]. In addition, Author [8] developed numerical model and simulated engine working cycle to define characteristic parameters for system design. Author concluded that the energy conversion based on the proposed principle is a promising area, however he [8] indicated that the realization of the prosed scheme is debatable due to difficulties related to its construction such as requirements for valves related to short actuation period, the realization of components sealing such as hydroturbine.…”

Section: Introductionmentioning

confidence: 99%

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A model of the novel concept liquid piston engine sourced by waste heat

et al. 2018

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This paper describes the model of the novel concept liquid piston engine, which is designed to convert low-grade waste heat into electricity. The proposed dynamic oriented model is implemented in Aspen Hysys that enables simulations dynamic simulation of various working agents. The simulation results were verified with experimental data obtained from the research installation. The proposed model demonstrated relatively small discrepancies with respect to experimental research, hence it could be used as a tool for research on optimization of an innovative power plant operation, i.e. various working agents, various operating pressures.

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“…High efficiency, long life time, low maintenance, low sound pollution, non-explosive nature and capability to use various fuels, can meet the demands of effective use of energy. The main drawback of Stirling machines may be attributed to high initial cost and low heat transfer in the heat exchangers [2]. In the 1970s and 1980s, a large amount of research was carried out on Stirling engines for automobiles.…”

Section: Introductionmentioning

confidence: 99%

A novel solar-powered active low temperature differential Stirling pump

Jokar

Tavakolpour-Saleh

2015

Renewable Energy

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a b s t r a c tThis paper presents a novel solar-powered active Stirling converter with liquid power piston and solid controllable displacer. First, the working principle of the proposed converter is described. Then, finite time thermodynamic approach incorporating heat transfer equations are employed to determine gas temperatures in hot and cold spaces based on the assumption of imperfect regeneration. Accordingly, pressure variation of the gas due to reciprocating motion of the displacer piston is investigated using the obtained gas temperatures and Schmidt theory. Next, total work done by the converter and thermal efficiency are evaluated. Kinematic and dynamic equations governing the pump system are presented and the water flow characteristics in suction and discharge states are investigated. A simulation study is carried out through coupling and simultaneously solving the obtained equations. An optimization scheme is thus conducted to find an optimum frequency of the active converter so that a maximum power is generated. The influences of regenerator efficiency, dead volumes, and water head on the optimum operating frequency and the generated power are investigated. Finally, the proposed converter is constructed and primarily tested. The experimental outcomes clearly reveal the feasibility of pumping water at low temperature difference through the proposed active Stirling pump.

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Conversion of thermal energy into electricity via a water pump operating in Stirling engine cycle

Cited by 20 publications

References 3 publications

Exergy loss analysis of the regenerator in a solar Stirling engine

Exergy loss analysis of the regenerator in a solar Stirling engine

A model of the novel concept liquid piston engine sourced by waste heat

A novel solar-powered active low temperature differential Stirling pump

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