Design, fabrication, and testing of a MEMS microturbine

Jeon, Byung Sun; Park, Kun Joong; Song, Seung Jin; Joo, Young Chang; Min, Kyoungdoug

doi:10.1007/bf02916190

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…As a result, the use of drainage waste for electricity production which could contribute to the local electrical power production as local consumption is immense (Diez, 2008). But this generation of sewage energy has never taken place and the hydraulic energy potential has not been studied in the drainage plants in Pakistan (Elbatran et al, 2015;Falconi et al, 2009;Ghalichechian et al, 2008;Ikeda et al, 2010;Jeon et al, 2005). Thus the desire to achieve hydraulic micro-scale electricity production with an energy output of less than 90 kW is growing (Alexander et al, 2009;Singh and Nestmann, 2011;Stark et al, 2011;Yasuyuki et al, 2014;Runner, 2015;Uchiyama et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Production of electricity employing sewerage lines using a micro cross flow turbine

Tahir¹,

Mugheri²,

Ahmad³

et al. 2020

Int. J. Eng. Sci. Tech

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In the design of cross flow turbines, efficiency is a significant parameter. The crossflow turbine for developing nations is the most cost-efficient electricity generation source and often used in isolated power systems. This research work analyzes the potential of electricity production using a micro-cross flow turbine from sewage lines. To measure the hydraulic potential of the sewage’s wastewater, flow rate at the connection point was investigated by experimentation on site and the efficiency of the micro cross flow turbine was evaluated. The experimental results show that the hydraulic potential of the selected point for electricity production is enough throughout the year. It also shows that the micro-cross flow turbine can be used effectively to produce electricity from the sewage at the link points. The highest efficient 2 mm head was observed with a maximum flow rate of 0.112 m3/s. Depending on the flow rate, the turbine velocity was 103-263 rpm. The maximum power of shaft was 284.58 W and the highest power generated was 196.24 W. The maximum overall efficiency was 68.2%. This article discusses the design, efficiency, operation and cost of low-head micro crossflow turbines. Keywords: Electricity Generation, Hydraulic Potential, Micro Cross Flow Turbine, Sewage

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Section: Introductionmentioning

confidence: 99%

Production of electricity employing sewerage lines using a micro cross flow turbine

Tahir¹,

Mugheri²,

Ahmad³

et al. 2020

Int. J. Eng. Sci. Tech

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“…Recently, with the development of new technologies for manufacturing devices at small sizes (e.g., micron or sub-micron scales), manufacturing of many smallsize components for devices in the eld of the Micro-Electro-Mechanical Systems (MEMS) has been possible. For example, micro-engines and micro-drills are two types of micro-rotating equipment, which can be used in industrial or biomedical applications [1][2][3][4][5][6]. Generally, the rotational speed of the rotor in micro-drills is very high and can reach 60000 rpm [6].…”

Section: Introductionmentioning

confidence: 99%

Size Effect Investigation on Lateral Vibrations of a Micro Drill Subjected to an Axial Load Using the Modified Couple Stress Theory

Rahi

2018

Scientia Iranica

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In this paper, the modi ed couple stress theory is used to capture size e ect on dynamic behavior of a micro-drill subjected to an axial load and a concentrated mass, which is attached to its free end. Governing equations of lateral vibrations of the system and associated boundary conditions were derived by rst, obtaining the total kinetic and potential energy of the system and then, using Hamilton's principle. The Assumed Modes method was applied for transforming the governing partial di erential equations into a set of in nite ordinary di erential equations. Considering two terms of the equations, the rst two natural frequencies and instability rotational speeds of the micro-drill system were determined semi-analytically. Finally, numerical results of natural frequencies and the threshold of instability speeds of the system were derived with respect to di erent values of the system parameters such as rotational speed, axial load, rotor length, concentrated mass, and material length scale. The results showed that the material length scale parameter was extremely e ective on natural frequencies and the threshold of instability speeds of the micro-drill.

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“…Generally, there has been a significant increase in the reported research work focused on the development of micro-turbomachineries in the last few years [1][2][3][4][5][6]. Much of this was directed towards satisfying the demonstrated need for generating power at device size and output levels suitable for use in portable electronic appliances [4,5,7].…”

Section: Introductionmentioning

confidence: 99%