Study of a Stirling engine used for domestic micro-cogeneration. Thermodynamic analysis and experiment

Grosu, Lavinia; Dobre, Cătălina; Petrescu, Stoian

doi:10.1002/er.3345

Cited by 21 publications

(13 citation statements)

References 22 publications

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“…Among these cities, Tabriz had the highest overall efficiency and Bandar Abbas had better performance in the annual Stirling engine efficiency, the annual primary energy saving and annual carbon dioxide emissions reduction [107]. Grosu et al [108] presented a micro-CHP system with Stirling engine, and the results showed that the direct method and the adiabatic model had good accuracy. Ferreira et al [109,110] optimized a micro-CHP with a parabolic collector and a solar Stirling engine to produce heat and power.…”

Section: Parabolic Dish Collectorsmentioning

confidence: 99%

Solar collectors and photovoltaics as combined heat and power systems: A critical review

Kasaeian

Nouri

Ranjbaran

et al. 2018

Energy Conversion and Management

128

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A main method to increase the solar energy utilization efficiency is to combine heat and power generation together. In this paper, a critical review of the literature on solar combined heat and power systems (CHP) is conducted, which includes solar photovoltaic/thermal systems, concentrated photovoltaic/thermal systems, and various combination with different solar collectors and applications. It shows that there are serious gaps in this field, which calls for more research. The modeling and analysis of the electrical parts of the CHP systems are not adequate, and there are limited studies on the economic and exergy assessments of the solar concentrating CHP systems. The solar collectors for combined CHP were focused on optimizing the performance of the maximum average useful power generation and minimum total heat transfer area, little environment impact analysis was conducted. Careful exergy, economic and environmental analysis on both electronic and thermal performance is suggested, especially for large CHP system.

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Section: Parabolic Dish Collectorsmentioning

confidence: 99%

Solar collectors and photovoltaics as combined heat and power systems: A critical review

Kasaeian

Nouri

Ranjbaran

et al. 2018

Energy Conversion and Management

128

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“…f eg is the output force of the PMLG and is related to the load coefficient C and the piston speed

f_{eg} = C \overset{x}{true} ((),, t)

; f f is the mechanical friction force. (For more details about this model, please refer to Jia et al, Smallbone et al, Yuan et al, and Grosu et al)…”

Section: Pmlg Focused On Microgenerationmentioning

confidence: 99%

Performance and power quality assessment of a linear electric generator focused on microgeneration applications

Hernandez

Segundo

Gonzalez

et al. 2017

Int. Trans. Electr. Energ. Syst.

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The use of new generation devices based on renewable energy is a subject that increasingly becoming more important for the development of new distributed generation systems; one device developed for this purpose is the permanent magnet linear generator (PMLG). This work deals with the performance and power quality assessment of the PMLG under 2 different generation scenarios of microgeneration: the wave energy converter and the free piston engine linear generator. The performance of the PMLG is evaluated using the finite element method and experimental results under steady state condition of a 100-W prototype are presented to test and validate the proposed process design. The actuator displacement inside the PMLG was obtained from the equation that governs the movement of the 2 systems under study; this displacement was the excitation function used to conduct the simulation and the laboratory experiments. This work contributes to the design and development of power components devoted to microgeneration and creates the need for the modelling and development of power electronic converters for helping in control and power quality. KEYWORDS distributed generation, linear generator, microgeneration, piston generator, power quality, wave energy converter 1 | INTRODUCTION Currently, with the microgeneration arises, new alternatives on energy conversion devices are able to take alternative and sustainable energy, as in the case of permanent magnet linear generator (PMLG). This generator has been developed and tested to harness wave energy, 1-4 and more recently, in free piston energy converters 5-7 with applications in hybrid vehicles. 8,9 For the design of the PMLG, some previous contributions were reviewed, 1 study 10 describes and develop this device to be coupled to a wave energy converter (WEC) system using a buoy and another study 11 uses a submerged air-filled chamber known as Archimedes wave swing. In the energy conversion system, there are nonuniform and irregular movements of the waves in WEC, which affects the voltage and output power of the PMLG. With this in mind, De la Abbreviations: FEM, Finite element method; WEC, wave energy converter; PMLG, permanent magnet linear generator; FPEG, free piston electric generator; THD, total harmonic distortion; 2S, 2-stroke mode; 4S, 4-stroke mode; A s , stator surface dimension (m 2 ); D s , stator diameter (m); L s , stator axial length (m); B m , average magnetic flux density in stator (T); J m , current density in stator conductors (A/m 2 ); v m , linear velocity of magnets on the shaft (m/s); A a , shaft cross section (m 2 ); D a , shaft diameter (m); A g , cross section of the air gap tub (m 2 ); D g , mean diameter of air gap (m).; B a , average magnetic flux density in actuator (T); B g , average magnetic flux density in air gap (T); N s , number of conductors in stator windings.; V gen , induced voltage (U); P losses , electrical losses in PMGL (W); P in , desired power rate (W); P out , output power rate (W); P mec , mechanical losses due friction (W); %η, effi...

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“…Features as compactness, cost efficiency, noiselessness, ease of installation, and low maintenance are required when cogeneration systems are considered for domestic applications [7]. Owing to the rising interest in this topic in the residential sector, current research can be found in the literature [8][9][10][11][12][13][14][15][16]. The facility presented in this investigation combines the conventional cogeneration scheme with a heat pump, creating an autonomous micro-cogeneration system.…”

Section: Introductionmentioning

confidence: 99%

Development of a new android application to remotely control a micro‐cogeneration system as e‐learning tool

Crespo

Rey²,

Míguez

et al. 2016

Comp Applic In Engineering

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The increasing use of smartphone technology in people's daily lives and its continuous development lead to the inevitable use of mobile applications because of their easy access anytime and anywhere. In this study, a new Android application for smartphones is developed and presented for the remote control of a micro‐cogeneration system from a mobile device without the need to be near the system. The mobile application consists of five different windows through which real‐time data on the most important variables of the system can be observed at any time. Additionally, the application allows the user to select the system's desired operating mode among a total of five possibilities. Alarms and warnings are also shown along with the detailed status of the main variables of the groups forming the system. Moreover, the application can graphically show the progression of variables at any time, and a history of the changes to the system is available. An experimental practice based on the “use of current mobile applications” for a subject of the Master of Thermal Engineering is proposed as a pedagogical method that involves the procedure “learning by doing,” in which students can realize the great advantages of using these technologies. © 2016 Wiley Periodicals, Inc. Comput Appl Eng Educ 24:497–507, 2016; View this article online at http://www.wileyonlinelibrary.com/journal/cae; DOI

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Study of a Stirling engine used for domestic micro-cogeneration. Thermodynamic analysis and experiment

Cited by 21 publications

References 22 publications

Solar collectors and photovoltaics as combined heat and power systems: A critical review

Solar collectors and photovoltaics as combined heat and power systems: A critical review

Performance and power quality assessment of a linear electric generator focused on microgeneration applications

Development of a new android application to remotely control a micro‐cogeneration system as e‐learning tool

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