Dynamic modelling of the expansion cylinder of an open Joule cycle Ericsson engine: A bond graph approach

Creyx, M; Delacourt, Eric; Morin, Céline; Desmet, Bernard

doi:10.1016/j.energy.2016.01.106

Cited by 16 publications

(8 citation statements)

References 13 publications

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“…One of the main difficulties of the Stirling engine is the necessity of a compromise between a large area and a small volume of the heat exchanger [21,22]. Indeed, in a Stirling engine, the heat exchangers volume are considered as dead.…”

Section: Hot Air Enginesmentioning

confidence: 99%

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Waste Heat Recovery and Conversion into Electricity: Current Solutions and Assessment

Blaise

Feidt

2019

International Journal of Thermodynamics

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The main energy consumption sectors are the residential, industry and transport. In all of them, a part of the energy consumption is not used and generally rejected as heat in the environment. This is named the waste heat. Firstly, the main way is to optimize the process to reduce the fuel consumption. Then, if there is a residual waste heat, a valorization way is to convert this heat into electricity. Some technologies are developed. The main technology is the Organic Rankine Cycle engine. Then, a new concept, named Turbosol, is based on the quasi-isothermal expansion of a water and oil mixture in a nozzle. Some piston engines are also developed, based on Stirling, Ericsson and Joule cycles. All these technologies are named externally heated engines. Some other research studies concern the thermoelectric effect and the thermo-magnetic effect. In this article, a non-exhaustive list, with description and comments on these technologies is proposed. The aim is to assess the potential of them and identify the current limits. To compare the different technologies in first law efficiency terms is not sufficient. Some new criterions are proposed. The first consideration is to assess the heat rate consumption referred to the heat rate available. To assess the quality of waste heat to power conversion, it is pertinent to evaluate the power output divided by the available heat rate. Then, because of the second law, it is pertinent to evaluate the exergy recovery ratio. These new waste heat criterions are compared to the classical first law efficiency in different cases. Then, the main current issue is to produce enough electrical power output to ensure the profitability. Some thermo-economic considerations are proposed, including the impact of a waste heat taxation.

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Section: Hot Air Enginesmentioning

confidence: 99%

“…But, valves separate the different components and increase the engine complexity [23]. The current Joule-cycle Ericsson engine issue is the development of steady state [24] and dynamic models [22], with optimization [25] and the prototype achievement [23]. The current application is the micro-CHP systems.…”

Section: Hot Air Enginesmentioning

confidence: 99%

Waste Heat Recovery and Conversion into Electricity: Current Solutions and Assessment

Blaise

Feidt

2019

International Journal of Thermodynamics

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“…Lontsi & al. developed a dynamic model of an Ericsson engine [16] and show that high rotational speeds affect the energy performance. Creyx & al. developed detailed models of nonrecuperated Ericsson or Joule cycle reciprocating engines [4,17,18] for solid biomass-fuelled micro-CHP applications. Fula Rojas & al. have developed studies on thermal and thermodynamic modelling and experimentation of a Joule cycle hot air Ericsson engine [19,20] which allow to determine the conditions under which the in-cylinder heat transfers can improve the performance of the energy system considered.…”

Section: Figure 1 General Ericsson Engine Configurationmentioning

confidence: 99%

Study of three valves command laws of the expansion cylinder of a hot air engine

Stouffs

Ngangué

Mayi

2019

International Journal of Thermodynamics

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The family of hot air engines with external heat input is divided in two subgroups: the Stirling engines, invented in 1816, have no valves whereas Ericsson engines, invented in 1833, have valves in order to isolate the cylinders. The valves give some advantages to the Ericsson engine. Amongst them, the most important one is that the heat exchangers are not to be considered as unswept dead volumes whereas the Stirling engine designer is faced to the difficult compromise between heat exchanger transfer area maximization and heat exchanger volume minimization. However, the distribution system of the Ericsson engine introduces some complexity and a non-negligible mechanical energy consumption in order to actuate them. An original and very simple system called "bash-valve" is proposed to provide answers to the difficulties related to the distribution system of the Ericsson engine. The "bash-valve" technology has been used in steam piston engines and pneumatic piston engines. In this system, the piston itself actuates the opening of the valves when being around the top dead center. When its moves to the bottom dead center, the piston loses contact with the valves and it closes under the effect of the return spring. Three different valves command laws of the expansion cylinder of the proposed hot air engine are studied. A comparison between energy performance of the engine with the expansion cylinder equipped with two kinds of bash valve technology and the energy performance of the expansion cylinder of an incomplete expansion Joule Ericsson cycle engine is presented as well as their influence on the design of the system.

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“…There have been thorough reviews of the Stirling engine by Kongtragool and Wongwises [11], Thombare and Verma [12] and Wang et al [13]. The research of the Ericsson engine is not as extensive as the Stirling engine, but the Ericsson cycle was examined in a past study [14], as well as an open cycle Ericsson engine equipped with valves was analysed [15][16][17]. The above research has been instrumental in the development and improvement of these engines, but there has yet to be a comparison between Stirling and Ericsson engines to reveal which one preforms better and produces greater net work output for which situations.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Net Work Output between Stirling and Ericsson Cycles

Costa

MacDonald

2018

Energies

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Abstract:In this paper, we compare Stirling and Ericsson cycles to determine which engine produces greater net work output for various situations. Both cycles are for external heat engines that utilize regenerators, where the difference is the nature of the regeneration process, which is constant volume for Stirling and constant pressure for Ericsson. This difference alters the performance characteristics of the two engines drastically, and our comparison reveals which one produces greater net work output based on the thermodynamic parameters. The net work output equations are derived and analysed for three different scenarios: (i) equal mass and temperature limits; (ii) equal mass and pressure or volume; and (iii) equal temperature and pressure or volume limits. The comparison is performed by calculating when both cycles produce equal net work output and then analysing which one produces greater net work output based on how the parameters are varied. In general, the results demonstrate that Stirling engines produce more net work output at higher pressures and lower volumes, and Ericsson engines produce more net work output at lower pressures and higher volumes. For certain scenarios, threshold values are calculated to illustrate precisely when one cycle produces more net work output than the other. This paper can be used to inform the design of the engines and to determine when a Stirling or Ericsson engine should be selected for a particular application.

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Dynamic modelling of the expansion cylinder of an open Joule cycle Ericsson engine: A bond graph approach

Cited by 16 publications

References 13 publications

Waste Heat Recovery and Conversion into Electricity: Current Solutions and Assessment

Waste Heat Recovery and Conversion into Electricity: Current Solutions and Assessment

Study of three valves command laws of the expansion cylinder of a hot air engine

Comparison of the Net Work Output between Stirling and Ericsson Cycles

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