Design of Ericsson Heat Engine with Micro Channel Recuperator

Kussul, Ernst; Makeyev, Oleksandr; Baidyk, Tatiana; Olvera, Omar

doi:10.5402/2012/613642

Cited by 10 publications

(7 citation statements)

References 10 publications

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“…Each operating point corresponds to a well-defined engine whose characteristics are given by Eq. (12). It is observed in Figure 14 that this engine configuration exists only for pressure ratios greater than 3, in the range of dead volumes considered.…”

Section: Engine Operating Rangementioning

confidence: 85%

“…It is observed in Figure 14 that this engine configuration exists only for pressure ratios greater than 3, in the range of dead volumes considered. Unlike the Ericsson engine [12] for which it is possible that the curves and do not cross each other, there is always a solution for the intersection of the curves of the compression and expansion cylinder mass flow rate. Figure 15 presents the curves of the engine dimensionless net power depending on the pressure ratio B for different values of the volume ratio (Φ = 5, 10 and 20).…”

Section: Engine Operating Rangementioning

confidence: 99%

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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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Section: Engine Operating Rangementioning

confidence: 85%

Section: Engine Operating Rangementioning

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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“…One of the first applications of the MET technology was development of microchannel recuperators for Ericsson heat engines [50,51]. Now we want to describe the new prototype of the microchannel filter.…”

Section: Metmentioning

confidence: 99%

Microchannel filter for air purification

2020

Self Cite

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AbstractIn this study, we propose a new design for a microchannel filter. The closed indoor environments with which we interact daily are sources of diseases for the respiratory system of human beings. Recommendations for the design of microchannel filters for indoor air purification are proposed, implementing low-cost microequipment technology (MET) for the manufacture of the elements that constitute a microfiltration system. For the microchannel filter production, we proposed to use MET, which is a miniaturization technology and can reduce manufacturing costs. The microchannel filter was 3.75 cm in radius with a thickness of 3 mm. It had a triangular profile and a helical trajectory. It was designed, manufactured, and tested for two profile dimensions. The main purpose was to reduce the pressure drop of the air flow through the filter. We described the air flow simulation for the microchannel filter using SolidWorks. A prototype microchannel filter was constructed, which underwent manufacturing tests. It is possible to clean the microchannel using water flow, which allows us to maintain the filtration quality within an optimum range of contaminant removal.

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“…Qin et al [6] have fabricated an evaporator-collector, used in the pump of an aqueous heater, made up of copper fins having a thickness of 350 µm. Kussul et al [7] fabricated a micro-channels recuperator made up of copper and used in the Ericsson engine. They improved the engine efficiency based on the low-temperature difference (5 • C) achieved after designing copper micro-channels which was otherwise not possible.…”

Section: Introductionmentioning

confidence: 99%

WEDM of Copper for the Fabrication of Large Surface-Area Micro-Channels: A Prerequisite for the High Heat-Transfer Rate

et al. 2020

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To get the maximum heat transfer in real applications, the surface area of the micro-features (micro-channels) needs to be large as possible. It can be achieved by producing a maximum number of micro-channels per unit area. Since each successive pair of the micro-channels contain an inter-channels fin, therefore the inter-channels fin thickness (IFT) plays a pivotal role in determining the number of micro-channels to be produced in the given area. During machining, the fabrication of deep micro-channels is a challenge. Wire-cut electrical discharge machining (EDM) could be a viable alternative to fabricate deep micro-channels with thin inter-channels fins (higher aspect ratio) resulting in larger surface area. In this research, minimum IFT and the corresponding machining conditions have been sought for producing micro-channels in copper. The other attributes associated with the micro-channels have also been deeply investigated including the inter-channels fin height (IFH), inter-channels fin radius (IFR) and the micro-channels width (MCW). The results reveal that the inter-channels fin is the most critical feature to control during the wire electrical discharge machining (WEDM) of copper. Four types of fin shapes have been experienced, including the fins: broken at the top end, deflected at the top end, curled bend at the top, and straight with no/negligible deflection.

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Design of Ericsson Heat Engine with Micro Channel Recuperator

Cited by 10 publications

References 10 publications

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

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

Microchannel filter for air purification

WEDM of Copper for the Fabrication of Large Surface-Area Micro-Channels: A Prerequisite for the High Heat-Transfer Rate

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