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Добірка наукової літератури з теми "Rankin cycle"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Rankin cycle"

ISSHIKI, Naotsugu, Hiroshi KOJIMA, Izumi USHIYAMA, and Seita ISSHIKI. "Development of Steam Rankin Stirling Cycle Engine (SRSE)." Proceedings of the Symposium on Stirlling Cycle 2000.4 (2000): 59–62. http://dx.doi.org/10.1299/jsmessc.2000.4.59.

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Sultan, Dr Fawaz. "Performance Analysis of Steam Power Plants Using Ideal Reheat-Rankin Cycle." International Journal of Advanced engineering, Management and Science 3, no. 4 (2017): 305–12. http://dx.doi.org/10.24001/ijaems.3.4.4.

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Набокин, A. Nabokin, Новиков, and A. Novikov. "FOREIGN EXPERIENCE OF IMPLEMENTATION CYCLE CARNOT IN AUTOMOTIVE PISTON POWER PLANTS." Alternative energy sources in the transport-technological complex: problems and prospects of rational use of 3, no. 1 (March 16, 2016): 26–30. http://dx.doi.org/10.12737/18623.

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The article outlines the basic concepts of thermodynamic improvement of technical facilities for automobile transport. Reviewed the cycles of Rankin, Stirling, Edwards as the most applicable for the use of alternative energy sources.

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Bo, Dakkah Baydaa, I′ldar A. Sultanguzin, and Yuriy V. Yavorovsky. "Heat Recovery Using Organic Rankine Cycle." Vestnik MEI, no. 5 (2021): 51–57. http://dx.doi.org/10.24160/1993-6982-2021-5-51-57.

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Heat losses in industrial processes can be divided into three sections (high-, medium-, and low-temperature heat), depending on the temperature of the exhaust gases. This heat is usually recovered either by heat exchangers or by a closed Rankine cycle. However, about 60% of low-temperature heat losses remain irreplaceable. Currently, the organic Rankine cycle has become a promising method of low-temperature energy recovery, and several theoretical studies on this topic have appeared, but a small number of experimental studies have been performed. In our work, we have built a 2 kW heat recovery laboratory test bench using tube-type heat exchangers, a gear pump and a turbo expander on the working fluid R141b. As a result, we found that the efficiency of the cycle increases as the boiling point and pressure increase, but an increase in overheating at the inlet of the expander leads to a decrease in efficiency due to the use of the working fluid R141b. At the inlet of the evaporator and the outlet of the condenser, respectively, overheating and supercooling of the working fluid occurs, which negatively affects the efficiency of the cycle. The amount of useful heat obtained was 45.4 W with an efficiency of 2.24%. as a result of low efficiency of the expander and pump, as well as leaks during the test. The development of an experimental test bench with working on organic Rankin cycle requires long-term research work and great scientific potential. In the future, it will be necessary to create a new test bench based on a deeper study, so that we can get a higher efficiency of the expander and pump, which would affect the efficiency of this cycle. Also, we need to replace the working fluid in the cycle with a more efficient one.

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ISSHIKI, Naotsugu, Hiroshi KOJIMA, and Seita ISSHIKI. "A09 Development of Rankin Stirling Cycle Engine (SRSE) Utilizing wooden Pellets as Fuel." Proceedings of the Symposium on Stirlling Cycle 2001.5 (2001): 27–30. http://dx.doi.org/10.1299/jsmessc.2001.5.27.

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Ćehajić, Nurdin, and Sandira Eljšan. "Exergy analysis of sub-critical organic Rankin cycle for the energy utilization of biomass." Tehnika 73, no. 3 (2018): 373–80. http://dx.doi.org/10.5937/tehnika1803373c.

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Bai, Jie, Leilei Cao, and Lulu Cao. "System design and analysis on organic Rankin cycle for asphalt plant’s waste heat recovery." IOP Conference Series: Earth and Environmental Science 358 (December 13, 2019): 052067. http://dx.doi.org/10.1088/1755-1315/358/5/052067.

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Al-Furaiji, Mushtaq A., Fawzi Sh Alnasur, Hayder salah AL sammarraie, and Muhammed Im Kareem. "Regeneration equations for the Rankine cycle with super-heated steam." IOP Conference Series: Earth and Environmental Science 1029, no. 1 (May 1, 2022): 012015. http://dx.doi.org/10.1088/1755-1315/1029/1/012015.

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Abstract The paper presents a mathematical model to calculate the thermal efficiency of the steam turbines with superheating, methodology forecasting for the Rankin cycle with superheated steam using Regression equations, MathCad, SPSS, and Statistatica programs. The resulting regression equation is applied to calculate the indicator values in a given range of variation of parameters, and it is also limitedly suitable for calculation outside this range. A MathCad-based approach for calculating the predictive model was created and presented. This work presents the formulation of a problem for the method of experiment planning. A turbine unit with three input parameters that influence the value of the output parameter Y (the thermal efficiency of the Steam turbine unit) was studied through the method of experiment planning. Along with that, the first parameter (initial pressure turbine, bar) varied within: 100< x1 <128; the second parameter (the turbine-inlet temperature, °C) varied within: 450 < X2 < 550; the third parameter (the fraction of dryness) varied within: 0.79 < X3 < 0.83.

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YOKOYAMA, Tomoyuki, Tomohiko YAMAGUCHI, Souichi SASAKI, Hidejiro MORITAKA, Kuniyasu KANEMARU, and Satoru MOMOKI. "624 Feasibility Study of Super Critical CO2 Rankin Cycle Driven by Heat Source of a Hot Spring." Proceedings of Conference of Kyushu Branch 2015.68 (2015): 257–58. http://dx.doi.org/10.1299/jsmekyushu.2015.68.257.

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HORINO, Takashi, Chayadit PUMANERATKUL, Kyosuke FUJITA, Haruhiko YAMASAKI, and Hiroshi YAMAGUCHI. "Performance and Flow Characteristics of Thermally Driven Pump in CO₂ Solar Rankin Cycle System." Proceedings of Mechanical Engineering Congress, Japan 2017 (2017): S0510102. http://dx.doi.org/10.1299/jsmemecj.2017.s0510102.

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Дисертації з теми "Rankin cycle"

Staněk, Štěpán. "Paroplynová turbína pro akumulaci energie." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417553.

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Master thesis discusses the growing need of electric energy storage and its effectivity and capacity. It describes an overview of possible technologies with their advantages and disadvantages. Greater attention is paid to the storage of energy in gas, so-called Power to Gas, which combines the electrolytic production of hydrogen from water and the Sabatier reaction to produce synthetic methane. This technology is introduced in the so-called SIT Brno cycle of Siemens Industrial Turbomachinery company. The main part of the thesis is focused on the description of this cycle and on the calculation of the steam-gas turbine (high-pressure and low pressure module). This thesis describes the methodology of turbine calculation and the composition of the steam gas mixture after combustion of methane. The carbon dioxide formed by combustion in the steam-gas mixture generator was replaced by steam. Part of the diploma thesis are drawings of cross-section of individual turbine modules.

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Landelle, Arnaud. "Experimental and numerical study of transcritical Organic Rankine Cycles for low-grade heat conversion into electricity from various sources." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI090/document.

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Le Cycle Organique de Rankine (abrégé ORC de l’anglais Organic Rankine Cycle) est une technologie permettant la conversion de chaleur basse température en électricité. L’ORC transcritique a été identifié comme une solution prometteuse pour la valorisation de la chaleur fatale. Cependant, peu d’installations expérimentales ont permis de confirmer ces performances. Ce travail de thèse présente le fonctionnement et l’optimisation d’ORC sous-critique et transcritique pour la conversion de chaleur basse température en électricité à partir de différentes sources. Premièrement, les contextes thermodynamique et technologique de l’ORC sont présentés. Des critères de performance énergétiques et exergétiques sont définis et appliqués à une base de données d’installations expérimentales afin d’exposer l’état de l’art actuel des ORC. Deuxièmement, les outils numériques et expérimentaux, spécifiquement développés ou utilisé pour ces travaux, sont présentés. Trois installations expérimentales d’ORC transcritique complet ou incomplet fournissent les données expérimentales. Différents modèles numériques sont utilisés : sous l’environnement Matlab pour la modélisation en permanent, l’analyse des données expérimentales et l’analyse énergétique/exergétique ; L’environnement Modelica/Dymola pour l’analyse des transitoires et de la dynamique du système. Dans un troisième temps, ces différents outils sont utilisés pour étudier quatre différentes problématiques : - Le fonctionnement de la pompe de circulation est étudié, d’un point de vue énergétique et volumétrique. Des modèles semi-empiriques et des corrélations de performance sont présentés. - Les transferts thermiques en supercritique sont examinés, en local et en global. Les coefficients de transfert thermique sont comparés avec différentes corrélations de la littérature. - L’influence de la charge de réfrigérant sur les performances et le comportement de l’ORC est analysée. La charge optimale est estimée pour différentes conditions de fonctionnement et des mécanismes de régulation de la charge sont présentés. - Les performances énergétiques et exergétiques de l’ORC sont comparées avec la base de données. Une analyse exergétique du procédé a permis d’identifier des voies d’amélioration
The Organic Rankine Cycle (ORC) is a technology used for low-grade thermal energy conversion into electricity. Transcritical ORC has been identified as a solution for efficient waste heat recovery. However, few experimental tests have been conducted to confirm the interest of transcritical ORC and investigate its operational behaviors. The work presented focuses on the operation and the optimization of subcritical and transcritical Organic Rankine Cycles for low-grade heat conversion into electricity from various heat sources (solar, industrial waste heat). First, the thermodynamic framework of ORC technology is presented. Energetic and exergetic performance criteria, appropriate to each type of input source, are introduced and selected. The criteria are later applied to a database of ORC prototypes, in order to objectively analyze the state-of-the-art. In a second step, the experimental and numerical tools, specifically developed or used in the present thesis, are presented. Three subcritical and transcritical ORC test benches (hosted by CEA and AUA) provided experimental data. Numerical models were developed under different environments: Matlab for steady-state modeling, data processing and energy/exergy analysis. The Modelica/Dymola environment for system dynamics and transient operations. Lastly, the different tools are exploited to investigate four different topics: - The ORC pump operation is investigated, both under an energetic and volumetric standpoint, while semi-empirical models and correlations are exposed. - Supercritical heat transfers are explored. Global and local heat transfer coefficients are estimated and analyzed under supercritical conditions, while literature correlations are introduced for comparison. - Working fluid charge influence over the ORC performance and behavior is investigated. Optimal fluid charge is estimated under various operating conditions and mechanisms for charge active regulation are exposed. - ORC system performances and behavior are discussed. Through both an energetic and exergetic standpoint, performances are compared with the state-of-the-art, while optimization opportunities are identified through an exergetic analysis

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Joska, Jakub. "Charakteristiky ventilátorových chladicích věží." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443198.

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This diploma thesis deals with the problematics of fan cooling towers. The very first part of the text is research, focusing mainly on the theory of cooling and the function of fan cooling towers in general. The following chapter deals with the water resource management of the Dukovany nuclear power plant and the specification of its objects of forced draft cooling towers. The second part describes a computational model created to determine the cooling performance of these towers under the given input conditions. In the following chapters, the results from the computational model are compared with the available data from warranty measurements and with the provided characteristics. The final pages deal with the study of the influence of changes in input parameters on the cooling performance and the research of the behavior of the cooling towers under extreme weather conditions.

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Brandsar, Jo. "Offshore Rankine Cycles." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19069.

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The title of the thesis - "Offshore Rankine Cycles" - is very general and cover a large range of engineering fields, e.g. thermodynamic cycles (Rankine, ORC, Brayton, Kalina, etc.), mechanical equipment (gas/steam turbine, heat exchangers and additional equipment) and safety concerns (flammable and/or toxic fluids, high temperature and pressures), to name the most important.The thesis try to give a brief overview of all critical points and alternatives, concerning employment of a waste heat recovery machine on offshore facilities, although focus has been on three more specified cases, namely:1. Comparison of a steam cycle vs. an organic Rankine cycle for high temperature operating conditions.2. Study of heat exchanger parameters on total cycle performance.3. Investigation of a modular expander setup versus a single expander.To compare a steam cycle to an organic cycle, a choice of working fluid for the organic cycle had to be made. After some investigation, toluene was chosen as it is a "common" fluid with known properties and was found to be a viable option for high temperature heat sources, both for subcritical and supercritical operation. Due to water being constricted to subcritical operation a CO2 cycle was implemented as a comparison to the supercritical toluene cycle. The main focus of the comparison was exergy losses during heat transfer and power output.The heat exchanger parameter study was conducted with a printed circuit heat exchanger as an example. The study of overall cycle performance has close connections to the heat exchanger size, since it is an important parameter concerning offshore employment due to costly "footprint". The cycle's dependency on the heat exchanger is mainly by the heat transfer rate, or heat load, which the heat exchanger applies to the cycle. The heat transfer rate is given by the heat exchanger`s ability to reduce the temperature of the exhaust gases. This ability depends on the two fluids involved and the geometry of the heat exchanger. While the choice in working fluid and pinch points sets the amount of heat transferred, the remaining analysis rest on the overall heat transfer coefficient (UA) to balance the heat load. When fluid properties are determined, the UA - value is again dependent on heat exchanger geometry and further variation of these parameters will in turn reveal the size of the heat exchanger. When imposing a working fluid to the cold side of the heat exchanger an optimization in heat exchanger volume could be found at specified heat load.A VBA macro has been made where expander parameters (rated power and efficiency vs. volumetric flow rate values) could be used as inputs to calculate the power output of two expanders in a modular setup relative to a single expander as reference.

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Igobo, Opubo. "Low-temperature isothermal Rankine cycle for desalination." Thesis, Aston University, 2016. http://publications.aston.ac.uk/28569/.

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In brackish groundwater desalination, high recovery ratio (of fresh water from saline feed) is desired to minimise concentrate reject. To this effect, previous studies have developed a batch reverse osmosis (RO) desalination system, DesaLink, which proposed to expand steam in a reciprocating piston cylinder and transmit the driving force through a linkage crank mechanism to pressurise batches of saline water (recirculating) in a water piston cylinder unto RO membranes. However, steam is largely disadvantaged at operation from low temperature (< 150oC) thermal sources; and organic working fluids are more viable, though, the obtainable thermal cycle efficiencies are generally low with low temperatures. Consequently, this thesis proposed to investigate the use of organic working fluid Rankine cycle (ORC) with isothermal expansion, to drive the DesaLink machine, at improved thermal efficiency from low temperature thermal sources. Following a review of the methods of achieving isothermal expansion, ‘liquid flooded expansion’ and ‘expansion chamber surface heating’ were identified as potential alternative methods. Preliminary experimental comparative analysis of variants of the heated expansion chamber technique of effecting isothermal expansion favoured a heated plain wall technique, and as such was adopted for further optimisation and development. Further, an optimised isothermal ORC engine was built and tested at < 95oC heat source temperature, with R245fa working fluid – which was selected from 16 working fluids that were analysed for isothermal operation. Upon satisfactory performance of the test engine, a larger (10 times) version was built and coupled to drive the DesaLink system. Operating the integrated ORC-RO DesaLink system, gave freshwater (approximately 500 ppm) production of about 12 litres per hour (from 4000 ppm feed water) at a recovery ratio of about 0.7 and specific energy consumption of 0.34 kWh/m3; and at a thermal efficiency of 7.7%. Theoretical models characterising the operation and performance of the integrated system was developed and utilised to access the potential field performance of the system, when powered by two different thermal energy sources – solar and industrial bakery waste heat – as case studies.

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JUNIOR, CARLOS THOMAZ GUIMARAES LOPES. "THERMODYNAMIC COMPARISON BETWEEN A TRADITIONAL RANKINE CYCLE WITH AN INNOVATIVE RANKINE CYCLE USING RESIDUAL GASES FROM THE SIDERURGIC PROCESS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11329@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
O presente trabalho realiza uma comparação entre o ciclo Rankine tradicional e uma nova proposta de ciclo Rankine para uma planta de cogeração na indústria siderúrgica. O ciclo inovador é caracterizado por um sistema de regeneração por injeção direta de vapor seguida de bombeamento bifásico substituindo o uso de pré-aquecedores como no ciclo tradicional. Para a simulação dos ciclos de potência é empregado o Software Gate Cycle. São simuladas e estudadas diversas alternativas de configuração para a aplicação da nova tecnologia. A melhor alternativa de configuração do ciclo inovador é então comparada com o ciclo tradicional por meio da aplicação das análises de Primeira e Segunda Leis da Termodinâmica. Observou-se, entretanto, pouca diferença no desempenho do ciclo tradicional e do ciclo modificado.
In the present work, a comparison between a traditional Rankine cycle and a proposed innovative Rankine cycle, for a cogeneration plant in the steel industry, is carried out. The innovative cycle is characterized by a regeneration system with direct steam injection followed by two-phase pumping, instead of the water pre-heaters used in the traditional cycle. Different configuration alternatives for the technology application were simulated and studied. The best alternative was then selected and compared with the traditional cycle using First and Second Laws of Thermodynamics analyses. Little difference was observed, however, between the traditional and the modified cycle performances.

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Dahlqvist, Johan. "Impulse Turbine Efficiency Calculation Methods with Organic Rankine Cycle." Thesis, KTH, Kraft- och värmeteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104174.

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A turbine was investigated by various methods of calculating its efficiency. The project was based on an existing impulse turbine, a one-stage turbine set in an organic Rankine cycle with the working fluid being R245fa. Various methods of loss calculation were explored in the search for a method sufficiently accurate to make valid assumptions regarding the turbine performance, while simple enough to be time efficient for use in industrial research and development. The calculations were primarily made in an isentropic manner, only taking into account losses due to the residual velocity present in the exit flow. Later, an incidence loss was incorporated in the isentropic calculations, resulting in additional losses at off-design conditions. Leaving the isentropic calculations, the work by Tournier, “Axial flow, multi-stage turbine and compressor models” was used. The work presents a method of calculating turbine losses separated into four components: profile, trailing edge, tip clearance and secondary losses. The losses applicable to the case were implemented into the model. Since the flow conditions of the present turbine are extreme, the results were not expected to coincide with the results of Tournier. In order to remedy this problem, the results were compared to results obtained through computational fluid dynamics (CFD) of the turbine. The equations purposed by Tournier were correlated in order to better match the present case. Despite that the equations by Tournier were correlated in order to adjust to the current conditions, the results of the losses calculated through the equations did not obtain results comparable to the ones of the available CFD simulations. More research within the subject is necessary, preferably using other software tools.

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Somayaji, Chandramohan 1980. "First and second law analysis of Organic Rankine Cycle." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-03102008-143144.

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Collings, Peter. "Theoretical and experimental analysis of an organic Rankine Cycle." Thesis, University of Glasgow, 2018. http://theses.gla.ac.uk/30642/.

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In order to reduce emissions of carbon dioxide from the energy and transportation sectors, while still providing a reliable and affordable service, innovation in the fields of power generation and energy efficiency is needed. There exists a wide variety of low-temperature heat sources, such as waste heat from industry and transportation, solar thermal, biomass and geothermal, which contain large amounts of energy, but do not have sufficient temperature to be economically viable using traditional power generation techniques. Several technologies have been proposed to utilise these promising resources, of which the Organic Rankine Cycle is widely considered to be the technology with the most potential for large-scale commercial deployment. However, the low driving temperature differential available to Organic Rankine Cycles using these heat sources means that they face several technological challenges, some of which are addressed in this thesis. Firstly, they experience low efficiencies, which means that small absolute changes in efficiency and cost can be proportionally very significant, this makes cycle optimisation to achieve marginal gains a worthwhile exercise. Secondly, there is a lack of suitable working fluids for the Organic Rankine Cycle, meaning that they often have to operate with a fluid that is not tailored for the specific application. Producing tailor-made working fluids to a given heat source and sink temperature could represent a significant field for optimising the performance of ORCs. Thirdly, there is a lack of experimental validation of many theoretical aspects of the Organic Rankine Cycle, particularly for low heat source temperatures and power outputs. This thesis aims to contribute to the body of research on ORC technology by developing an analytical model to design an experimental rig. This rig is used to validate several theoretical predictions, which are then expanded upon to develop a novel method of cycle optimisation in an application with variable heat sink temperatures. Firstly, a thermodynamic model was developed in MATLAB to analyse a small-scale Organic Rankine Cycle. This model builds on well-established analytical modelling principles that frequently appear in the literature. This basic model was used as a tool to design a lab-scale experimental Organic Rankine Cycle rig, capable of addressing several gaps in the current literature, most notably the lack of research on the impact of a regenerator on the performance of an Organic Rankine Cycle, and the lack of experimental research on the performance of an Organic Rankine Cycle using a working fluid composed of a mixture of two working fluids, in this case r245fa and r134a. The model, its results and the design of the experimental rig are described in detail. The results from this experimental rig showed an increase in cycle efficiency and cycle output power with increasing heat source temperature and increasing cycle pressure ratio. The use of a regenerative cycle resulted in an increased cycle efficiency, but the extra flow resistance caused by the additional heat exchanger caused the mass flow rate of the cycle to drop, reducing the output power at the same time as reducing the evaporator heat demand and thereby increasing cycle efficiency. The addition of more r134a, which has a lower boiling point, to the working fluid mixture, increased the condenser pressure and thereby reduced the cycle pressure ratio, reducing output power and efficiency. The maximum efficiency achieved was 11.3%, for a regenerative cycle with a heat source temperature of 95°C and a pressure ratio of 4.56:1. Using the results from the experimental rig, and the model that they validate, the concept for the Dynamic Organic Rankine Cycle is presented. The Dynamic Organic Rankine Cycle was conceived as a solution to a problem identified in the literature, namely that an Organic Rankine Cycle using ambient air as the heat sink cannot fully utilise the driving temperature differential available to it during times of colder ambient temperature, as it must be designed to still function on the hottest day of the year. In order to address this, the Dynamic ORC Concept uses a variable working fluid composition, capable of shifting the composition between one working fluid component and the other by batch distillation in order to change the fluid’s bubble and dew points to match the heat sink temperature. The use of working fluid mixtures is in contrast to most current research, which has focused primarily on pure, single-component working fluids. A theoretical analysis of this cycle in MATLAB was carried out, and it was found that the cycle results in substantial increase in year-round power generation from the cycle, of the order of 8-10% for a heat source temperature of 150°C, increasing to 23% and higher for heat source temperatures of 100°C and below, while operating in a continental climate, such as that of Beijing, China. When operating in a climate with less temperature variation, the gains are lower, but still significant. Structurally, this paper presents a review of the relevant literature to the Organic Rankine Cycle, identifying the knowledge gaps that justify the work carried out. It then reviews the theory of the ORC, and how this was used both to build a computer model for analysis of the dynamic ORC and design the 1kW experimental rig. The experimental results from the rig are then presented and discussed. Finally, the results of the theoretical analysis of the dynamic ORC are presented, and analysed with the aid of the REFPROP fluid properties program to explain the trends observed in the data. Finally, suggestions for further work are made.

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Chandrasekaran, Vetrivel. "Virtual Modeling and Optimization of an Organic Rankine Cycle." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1408456065.

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Книги з теми "Rankin cycle"

Bailey, P. B. A free piston expander for a direct fired Rankine cycle heat pump. [s.l.]: typescript, 1986.

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Li, Jing. Structural Optimization and Experimental Investigation of the Organic Rankine Cycle for Solar Thermal Power Generation. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-45623-1.

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Kubo, I. Technical and economic study of Stirling and Rankine cycle bottoming systems for heavy truck diesel engines. Cleveland, Ohio: National Aeronautics and Space Administration, Lewis Research Center, 1987.

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Hoetman, Agus Rusyana. A computational and experimental study of a solar powered Rankine Cycle Engine for use in Jakarta. Salford: University of Salford, 1991.

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Stone, James R. Alkali metal rankine cycle boiler technology challenges and some potential solutions for space nuclear power and propulsion applications. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Angelino, G. Design, construction and testing of a hermetically sealed 100 kw Organic Rankine Cycle engine formedium temperature (200-400°c) heat recovery. Luxembourg: Commission of the European Communities, 1986.

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Working Fluid Selection for Organic Rankine Cycle and Other Related Cycles. MDPI, 2020. http://dx.doi.org/10.3390/books978-3-03936-075-8.

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Organic Rankine Cycle (ORC) Power Systems. Elsevier, 2017. http://dx.doi.org/10.1016/c2014-0-04239-6.

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United States. National Aeronautics and Space Administration., ed. ANL-RBC: A computer code for the analysis of Rankine bottoming cycles, including system cost evaluation and off-design performance. [Washington, DC: National Aeronautics and Space Administration, 1986.

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Частини книг з теми "Rankin cycle"

Elhaj, Mohammed A., Kassim K. Matrawy, and Jamal S. Yassin. "Modeling and Performance Prediction of a Solar Powered Rankin Cycle/Gas Turbine Cycle." In Challenges of Power Engineering and Environment, 103–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-76694-0_18.

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Invernizzi, Costante Mario. "The Organic Rankine Cycle." In Closed Power Cycles, 117–75. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5140-1_3.

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Kolanowski, Bernard F. "The Organic Rankine Cycle." In Small-Scale Cogeneration Handbook, 177–82. New York: River Publishers, 2021. http://dx.doi.org/10.1201/9781003207382-23.

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Kaushik, Shubhash C., Sudhir K. Tyagi, and Pramod Kumar. "Finite Time Thermodynamics of Rankine Cycle Airconditioning and Heat Pump Cycles." In Finite Time Thermodynamics of Power and Refrigeration Cycles, 203–17. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62812-7_9.

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Zhao, Li. "Zeotropic Mixture and Organic Ranking Cycle." In Lecture Notes in Energy, 133–68. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26950-4_6.

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Tchanche, Bertrand F. "Geothermal Energy and Organic Rankine Cycle Machines." In Alternative Energy and Shale Gas Encyclopedia, 310–17. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119066354.ch30.

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Yamaguchi, Hiroshi, and Xin-Rong Zhang. "Development of Supercritical CO2 Solar Rankine Cycle System." In Lecture Notes in Energy, 3–27. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26950-4_1.

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Fouquet, Thibault, and J. Roussilhe. "Rankine cycle – from thermodynamic equation to road test." In Heavy-Duty-, On- und Off-Highway-Motoren 2017, 259–76. Wiesbaden: Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-21029-8_17.

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Desai, Nishith B., and Santanu Bandyopadhyay. "Biomass-Fueled Organic Rankine Cycle-Based Cogeneration System." In Process Design Strategies for Biomass Conversion Systems, 247–61. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118699140.ch10.

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Zhar, Rania, Amine Allouhi, Abdelmajid Jamil, and Khadija Lahrech. "Performance Comparison of Regenerative Organic Rankine Cycle Configurations." In Lecture Notes in Electrical Engineering, 583–93. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6893-4_54.

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Тези доповідей конференцій з теми "Rankin cycle"

Yuya, Kobayashi, Niki Yuya, Takeda Kenji, Aibara Megumi, Kaneko Minami, and Uchikoba Fumio. "Rotational Experiment of MEMS Turbine for Miniature Organic Rankin Cycle Generator." In 2021 IEEE 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS). IEEE, 2021. http://dx.doi.org/10.1109/powermems54003.2021.9658385.

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Bronicki, Lucien, Carl N. Nett, and Josh Nordquist. "Electricity Generation From Fuel Cell Waste Heat Using an Organic Rankine Cycle." In ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2014 8th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fuelcell2014-6595.

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Fuel cells produce exhaust waste heat that can be harnessed to either meet local heating needs or produce additional electricity via an appropriately chosen bottoming cycle. Power production can often be more economically attractive than heating due to the much higher value of electricity than heat on an equivalent energy basis, especially given fuel cell incentives and subsidies that are based on the net electrical output of the (combined cycle) fuel cell power plant. In this paper we review the application of the Organic Rankin Cycle (ORC) for power production from fuel cell waste heat, with emphasis on the resulting improvements in overall power plant power output, efficiency, economics (e.g., cents/kWh maintenance costs), and emissions levels (e.g., lb/MWh emissions). We also highlight a much less obvious advantage of ORC bottoming of fuel cells; namely, its ability to partially compensate for fuel cell stack degradation over time, and corresponding potential to extend the time required between fuel cell stack overhauls. We will also review the relative difficulty of several well established commercial applications of the ORC for power production from waste heat — such as power production from gas turbine exhaust, etc. — in comparison to fuel cell applications. We conclude that not only is the ORC ideal for fuel cell bottoming, but also that fuel cells are a nearly ideal commercial application area for the ORC. In closing, we summarize a recently completed project believed to be the world’s first commercial application of ORC technology to a fuel cell power plant. This project was completed in less than a year after its initiation, and utilizes a single ORC in conjunction with five fuel cells, all located within a fuel cell park that produces nearly 15 MW of electricity.

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Chen, Y., and P. Lundqvist. "The CO2 Transcritical Power Cycle for Low Grade Heat Recovery: Discussion on Temperature Profiles in System Heat Exchangers." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55075.

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Carbon dioxide transcritical power cycle has many advantages in low-grade heat source recovery compared to conventional systems with other working fluids. This is mainly due to the supercritical CO2’s temperature profile can match the heat source temperature profile better than other pure working fluids and its heat transfer performance is better than the fluid mixtures, which enables a better cycle efficiency. Moreover, the specific heat of supercritical CO2 will have sharp variations in the region close to its critical point, which will create a concave shape temperature profile in the heat exchanger that used for recovering heat from low-grade heat sources. This brings more advantage to carbon dioxide transcritical power systems in low-grade heat recovery. This study discusses the advantage of carbon dioxide power system in low-grade heat source recovery by taking this effect into account. A basic carbon dioxide transcritical power system with an Internal Heat Exchanger (IHX) is employed for the analysis and the system performance is also compared with a basic Organic Rankin Cycle (ORC). Software Engineering Equation Solver (EES) and Refprop 7.0 are used for the cycle efficiency and working fluid properties calculations.

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Yang, Tang, Yangping Zhou, Zhiwei Zhou, and Zhang Dabin. "HTR-PM Simulation Analysis of Accident Conditions Based on vPower Platform." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30726.

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HTR engineering simulator can be achieved by embedding THERMIX code into the vPower simulation environment. The engineering simulator consists of double-module reactors, two steam generators and entire secondary loop system for power generation with a water-steam Rankin cycle. The engineering simulator can be applied to simulate the steady-state operation, but also transient and accident state of HTR-PM. This paper analyzes the trends of reactor power, helium flow, steam generator inlet parameters, turbine inlet parameters and other key parameters under accident conditions, as well as the mutual influence between the two module reactors during accident process. Current simulation results are in good agreement with the design values and safety analysis results of HTR-PM.

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Gao, Qiang, Yangping Zhou, Zhiwei Zhou, Zhe Sui, Yuanle Ma, and Fu Li. "Compact Engineering Simulator for HTR-PM by Embedding THERMIX Code in vPower Simulation Platform." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29437.

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This paper describes the development of a compact engineering simulator of Pebble-bed Modular High Temperature Gas-cooled Reactor (HTR-PM) by embedding THERMIX code into the vPower simulation environment. The compact engineering simulator consists of modules for two reactors, two steam generators and entire secondary loop system for power generation with a water-steam Rankin cycle. Two THERMIX modules are employed to simulate the two primary loops corresponding to the two reactors in the HTR-PM respectively. Then, the vPower synchronizes the two THERMIX modules in executing simulation to such two reactor module-structures of HTR-PM. The simulation modules for secondary loop and human machine interface are mainly developed with intrinsic models of vPower simulation platform. Current simulation results are in good agreement with the design values and safety analysis results of HTR-PM. The compact HTR-PM engineering simulator will be improved and validated for safe analysis, procedure development and design change verification.

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Leão, Adriano, Pedro Martins de Oliveira, Valter E. Beal, Edna Almeida, and Alex Santos. "ANALYSIS OF THE EXERGETIC LIFE CYCLE OF RANKINE AND ORGANIC RANKINE CYCLES." In 25th International Congress of Mechanical Engineering. ABCM, 2019. http://dx.doi.org/10.26678/abcm.cobem2019.cob2019-0945.

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Chen, Huijuan, D. Yogi Goswami, Muhammad M. Rahman, and Elias K. Stefanakos. "Optimizing Energy Conversion Using Organic Rankine Cycles and Supercritical Rankine Cycles." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54608.

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The optimization of energy conversion systems is of great significance in the utilization of low-grade heat. This paper presents an analysis of 6 working fluids in 12 thermodynamic cycles to optimize the energy conversion systems. The optimal exergy efficiency of the system is dependent on the type of the thermodynamic cycle, the choice of appropriate working fluid, and the working conditions. A zeotropic mixture of R134a and R245fa shows advantages in energy conversion process, as well as its heat exchange with the heat source and heat sink. The exergy efficiency of a 0.5R134a/0.5R245fa-based supercritical Rankine cycle system is 0.643–0.689 for a turbine inlet temperature of 415–445K, which is about 30% improvement over the exergy efficiency of 0.491–0.521 for a pure R32-based organic Rankine cycle under the same temperature limits. Furthermore, the 0.5R134a/0.5R245fa mixture saves more than 60% of the cooling water during the condensation process than the pure R32, R134a and R245fa.

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"ENHANCED MASTER CYCLE - SIGNIFICANT IMPROVEMENT OF STEAM RANKINE CYCLE." In Engineering Mechanics 2019. Institute of Thermomechanics of the Czech Academy of Sciences, Prague, 2019. http://dx.doi.org/10.21495/71-0-125.

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Vasquez Padilla, Ricardo, Antonio Ramos Archibold, Gokmen Demirkaya, Saeb Besarati, D. Yogi Goswami, Muhammad M. Rahman, and Elias L. Stefanakos. "Performance Analysis of a Rankine-Goswami Combined Cycle." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54329.

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Improving the efficiency of thermodynamic cycles plays a fundamental role in reducing the cost of solar power plants. These plants work normally with Rankine cycles which present some disadvantages due to the thermodynamic behavior of steam at low pressures. These disadvantages can be reduced by introducing alternatives such as combined cycles which combine the best features of each cycle. In this paper a combined Rankine-Goswami cycle (RGC) is proposed and a thermodynamic analysis is conducted. The Goswami cycle, used as a bottoming cycle, uses ammonia-water mixture as the working fluid and produces power and refrigeration while power is the primary goal. This bottoming cycle, reduces the energy losses in the traditional condenser and eliminates the high specific volume and poor vapor quality presented in the last stages of the lower pressure turbine in the Rankine cycle. In addition, the use of absorption condensation in the Goswami cycle, for regeneration of the strong solution, allows operating the low pressure side of the cycle above atmospheric pressure which eliminates the need for maintaining a vacuum pressure in the condenser. The performance of the proposed combined Rankine-Goswami cycle, under full load, was investigated for applications in parabolic trough solar thermal plants for a range from 40 to 50 MW sizes. A sensitivity analysis to study the effect of the ammonia concentration, condenser pressure and rectifier concentration on the cycle efficiency, network and cooling was performed. The results indicate that the proposed RGC provide a difference in net power output between 15.7 and 42.3% for condenser pressures between 1 to 9 bars. The maximum effective first law and exergy efficiencies for an ammonia mass fraction of 0.5 are calculated as 36.7% and 24.7% respectively for the base case (no superheater or rectifier process).

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Alsagri, Ali S., Andrew Chiasson, and Ahmad Aljabr. "Thermodynamic Analysis and Multi-Objective Optimizations of a Combined Recompression sCO2 Brayton Cycle: tCO2 Rankine Cycles for Waste Heat Recovery." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86844.

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A thermodynamic analysis and optimization of a newly-conceived combined power cycle were conducted in this paper for the purpose of improving overall thermal efficiency of power cycles by attempting to minimize thermodynamic irreversibilities and waste heat as a consequence of the Second Law. The power cycle concept comprises a topping advanced recompression supercritical carbon dioxide (sCO2) Brayton cycle and a bottoming transcritical carbon dioxide (tCO2) Rankine cycle. The bottoming cycle configurations included a simple tCO2 Rankine cycle and a split tCO2 Rankine cycle. The topping sCO2 recompression Brayton cycle used a combustion chamber as a heat source, and waste heat from a topping cycle was recovered by the tCO2 Rankine cycle due to an added high efficiency recuperator for generating electricity. The combined cycle configurations were thermodynamically modeled and optimized using an Engineering Equation Solver (EES) software. Simple bottoming tCO2 Rankine cycle cannot fully recover the waste heat due to the high exhaust temperature from the top cycle, and therefore an advance split tCO2 Rankine cycle was employed in order to recover most of the waste heat. Results show that the highest thermal efficiency was obtained with recompression sCO2 Brayton cycle – split flow tCO2 Rankine cycle. Also, the results show that the combined CO2 cycles is a promising technology compared to conventional cycles.

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Звіти організацій з теми "Rankin cycle"

McWhirter, J. D. Multiple Rankine topping cycles. Office of Scientific and Technical Information (OSTI), July 1995. http://dx.doi.org/10.2172/206551.

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Daniel S. Wendt and Gregory L. Mines. Simulation of Air-Cooled Organic Rankine Cycle Geo. Office of Scientific and Technical Information (OSTI), September 2013. http://dx.doi.org/10.2172/1104501.

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Subramanian, Swami Nathan. Affordable Rankine Cycle Waste Heat Recovery for Heavy Duty Trucks. Office of Scientific and Technical Information (OSTI), June 2017. http://dx.doi.org/10.2172/1375960.

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Bharathan, D. Staging Rankine Cycles Using Ammonia for OTEC Power Production. Office of Scientific and Technical Information (OSTI), March 2011. http://dx.doi.org/10.2172/1010862.

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Dieckmann, John, Chad Smutzer, and Jayanti Sinha. Waste Heat-to-Power Using Scroll Expander for Organic Rankine Bottoming Cycle. Office of Scientific and Technical Information (OSTI), May 2017. http://dx.doi.org/10.2172/1360148.

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Richard E. Waryasz and Gregory N. Liljedahl. ECONOMICS AND FEASIBILITY OF RANKINE CYCLE IMPROVEMENTS FOR COAL FIRED POWER PLANTS. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/835217.

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Cole, R. L., J. C. Demirgian, and J. W. Allen. Organic Rankine-cycle power systems working fluids study: Topical report No. 2, Toluene. Office of Scientific and Technical Information (OSTI), February 1987. http://dx.doi.org/10.2172/5059264.

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Fuller, Robert L. Final Report. Conversion of Low Temperature Waste Heat Utilizing Hermetic Organic Rankine Cycle. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/838860.

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Nesmith, B. Bearing development program for a 25-kWe solar-powered organic Rankine-cycle engine. Office of Scientific and Technical Information (OSTI), September 1985. http://dx.doi.org/10.2172/6432713.

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Cole, R. L., J. C. Demirgian, and J. W. Allen. Organic Rankine-Cycle Power Systems Working Fluids Study: Topical report No. 3, 2-methylpyridine/water. Office of Scientific and Technical Information (OSTI), September 1987. http://dx.doi.org/10.2172/7158660.

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