Relevant bibliographies by topics / Clausius-Rankine cycle

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Clausius-Rankine cycle'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Clausius-Rankine cycle"

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Mikielewicz, Dariusz, Jan Wajs, and Elżbieta Żmuda. "Organic Rankine Cycle as Bottoming Cycle to a Combined Brayton and Clausius - Rankine Cycle." Key Engineering Materials 597 (December 2013): 87–98. http://dx.doi.org/10.4028/www.scientific.net/kem.597.87.

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A preliminary evaluation has been made of a possibility of bottoming of a conventional Brayton cycle cooperating with the CHP power plant with the organic Rankine cycle installation. Such solution contributes to the possibility of annual operation of that power plant, except of operation only in periods when there is a demand for the heat. Additional benefit would be the fact that an optimized backpressure steam cycle has the advantage of a smaller pressure ratio and therefore a less complex turbine design with smaller final diameter. In addition, a lower superheating temperature is required compared to a condensing steam cycle with the same evaporation pressure. Bottoming ORCs have previously been considered by Chacartegui et al. for combined cycle power plants [ Their main conclusion was that challenges are for the development of this technology in medium and large scale power generation are the development of reliable axial vapour turbines for organic fluids. Another study was made by Angelino et al. to improve the performance of steam power stations [. This paper presents an enhanced approach, as it will be considered here that the ORC installation could be extra-heated with the bleed steam, a concept presented by the authors in [. In such way the efficiency of the bottoming cycle can be increased and an amount of electricity generated increases. A thermodynamic analysis and a comparative study of the cycle efficiency for a simplified steam cycle cooperating with ORC cycle will be presented. The most commonly used organic fluids will be considered, namely R245fa, R134a, toluene, and 2 silicone oils (MM and MDM). Working fluid selection and its application area is being discussed based on fluid properties. The thermal efficiency is mainly determined by the temperature level of the heat source and the condenser conditions. The influence of several process parameters such as turbine inlet and condenser temperature, turbine isentropic efficiency, vapour quality and pressure, use of a regenerator (ORC) will be presented. Finally, some general and economic considerations related to the choice between a steam cycle and ORC are discussed.
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Wiśniewski, Sławomir, and Aleksandra Borsukiewicz-Gozdur. "The influence of vapor superheating on the level of heat regeneration in a subcritical ORC coupled with gas power plant." Archives of Thermodynamics 31, no. 3 (2010): 185–99. http://dx.doi.org/10.2478/v10173-010-0022-9.

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The influence of vapor superheating on the level of heat regeneration in a subcritical ORC coupled with gas power plantThe authors presented problems related to utilization of exhaust gases of the gas turbine unit for production of electricity in an Organic Rankine Cycle (ORC) power plant. The study shows that the thermal coupling of ORC cycle with a gas turbine unit improves the efficiency of the system. The undertaken analysis concerned four the so called "dry" organic fluids: benzene, cyclohexane, decane and toluene. The paper also presents the way how to improve thermal efficiency of Clausius-Rankine cycle in ORC power plant. This method depends on applying heat regeneration in ORC cycle, which involves pre-heating the organic fluid via vapour leaving the ORC turbine. As calculations showed this solution allows to considerably raise the thermal efficiency of Clausius-Rankine cycle.
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Nowak, W., A. Borsukiewicz-Gozdur, and A. A. Stachel. "Using the low-temperature Clausius–Rankine cycle to cool technical equipment." Applied Energy 85, no. 7 (2008): 582–88. http://dx.doi.org/10.1016/j.apenergy.2007.09.001.

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Chmielniak, Tadeusz, and Henryk Łukowicz. "Condensing power plant cycle — assessing possibilities of improving its efficiency." Archives of Thermodynamics 31, no. 3 (2010): 105–13. http://dx.doi.org/10.2478/v10173-010-0017-6.

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Condensing power plant cycle — assessing possibilities of improving its efficiency This paper presents a method for assessing the degree of approaching the paper output of the Clausius-Rankine cycle to the Carnot cycle. The computations to illustrate its use were performed for parameters characteristic of the current state of development of condensing power plants as well as in accordance with predicted trends for their further enhancing. Moreover there are presented computations of energy dissipation in the machines and devices working in such a cycle.
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Drożyński, Zbigniew. "Entropy increase as a measure of energy degradation in heat transfer." Archives of Thermodynamics 34, no. 3 (2013): 147–60. http://dx.doi.org/10.2478/aoter-2013-0021.

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Abstract Heat transfer is an irreversible process. This article defines the entropy increment as a measure of energy degradation in heat transfer realized in typical surface heat exchangers. As an example of the proposed entropy increase method, presented below are the calculations for heat exchangers working in a typical Clausius-Rankine cycle. The entropy increase in such exchangers inevitably leads to increased fuel consumption and, as a further consequence, to increased carbon dioxide emission.
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Stachel, Aleksander A., and Sławomir Wiśniewski. "Influence of the type of working fluid in the lower cycle and superheated steam parameters in the upper cycle on effectiveness of operation of binary power plant." Archives of Thermodynamics 36, no. 1 (2015): 111–23. http://dx.doi.org/10.1515/aoter-2015-0008.

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Abstract In the paper presented have been the results of the analysis of effectiveness of operation of binary power plant consisting of combined two Clausius-Rankine cycles, namely the binary cycle with water as a working fluid in the upper cycle and organic substance as a working fluid in the lower cycle, as well as a single fluid component power plant operating also in line with the C-R cycle for superheated steam, with water as a working fluid. The influence of the parameters of superheated steam in the upper cycle has been assessed as well as the type of working fluid in the lower cycle. The results of calculations have been referred to the single-cycle classical steam power plant operating at the same parameters of superheated steam and the same mass flow rate of water circulating in both cycles. On the basis of accomplished analysis it has been shown that the binary power plant shows a greater power with respect to the reference power plant.
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BORSUKIEWICZGOZDUR, A., and W. NOWAK. "Comparative analysis of natural and synthetic refrigerants in application to low temperature Clausius–Rankine cycle." Energy 32, no. 4 (2007): 344–52. http://dx.doi.org/10.1016/j.energy.2006.07.012.

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Nowak, Wladyslaw, Aleksander A. Stachel, and Aleksandra Borsukiewicz-Gozdur. "Possibilities of implementation of absorption heat pump in realization of the Clausius–Rankine cycle in geothermal power station." Applied Thermal Engineering 28, no. 4 (2008): 335–40. http://dx.doi.org/10.1016/j.applthermaleng.2006.02.031.

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Grzesiak, Szymon, and Andrzej Adamkiewicz. "Application of Steam Jet Injector for Latent Heat Recovery of Marine Steam Turbine Propulsion Plant." New Trends in Production Engineering 1, no. 1 (2018): 235–44. http://dx.doi.org/10.2478/ntpe-2018-0030.

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Abstract This paper presents the results of previously carried out analyses regarding efficiency and criteria evaluation of various propulsion plants of modern LNG (Liquid Natural Gas) carriers. The results of previous identification and quality assessment of waste heat energy sources of a CST (Conventional Steam Turbine) plant are presente. In this paper the possibility of use a steam jet injector in order to recover the latent heat is analysed. Calculations were carried out for an injector equipped with a de Laval nozzle, determining the thermodynamic state parameters of the mixture of drive steam and sucked in steam as well as the steam on the outlet of the injector for the various ejection ratios. On the basis of the results of the injector calculation, the heat balance of a simple regenerative Clausius – Rankine steam cycle (with one regenerative heater – deaerator) was carried out. The degree of regeneration (increase of the thermal efficiency) for cycle using the regenerative injector was determined. Based on results the further research directions for complex plants using a steam jets are indicated.
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Holmberg, Henrik, and Pekka Ahtila. "The thermal analysis of a combined heat and power plant undergoing Clausius–Rankine cycle based on the theory of effective heat-absorbing and heat-emitting temperatures." Applied Thermal Engineering 70, no. 1 (2014): 977–87. http://dx.doi.org/10.1016/j.applthermaleng.2014.05.100.

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Dissertations / Theses on the topic "Clausius-Rankine cycle"

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Čepl, Ondřej. "Optimalizace Rankineůva-Clausiůva parního cyklu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230982.

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This diploma thesis deals with an optimization of Rankine-Clausius steam cycle. The theoretical information about the Optimization and the Rankine-Clausius cycle are described at the beginning of the thesis. These theoretical findings are later used to create simulation models in MATLAB. Individual simulation models are variants of the ideal R-C cycle. Simulation models include the basic cycle model, the supercritical cycle and the cycle with reheat. For these models the optimal configurations are found and their t-s diagrams are plotted.
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Přívozník, Martin. "Porovnání tepelných účinností cyklů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231805.

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Theme of this master's thesis Comparison of thermal cycle efficiency is aimed on the calculation of thermal schemes of reheating and without reheating for various performances. The calculation is performed using specialized literature. The introduction describes the fundamental thermal cycle used in power plants and Rankine - Clausius cycle. After the initial familiarization with the parameters of Rankine - Clausius cycle follow a section with technical solutions to improve thermal efficiency of Rankine - Clausius thermal cycle. The aim of this work is to identify and compare the thermal efficiency of the thermal cycle with reheating, without reheating and compare them with each other. At the conclusion of this work is shown comparison between two low-pressure regeneration systems.
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Pavliska, Vojtěch. "Parní turbína pro pohon napájecího čerpadla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417533.

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This diploma thesis performs a calculation of a steam turbine to drive a feed pump. The research part deals with the basic classification of steam turbines focusing on mechanical drive steam turbines. The second part of the thesis is a controlled extraction pressure optimization for achieving the maximum possible thermic efficiency of the cycle. The last part of the thesis shows a detailed thermodynamic calculation of the mechanical drive turbine along with the basic geometric parameters of the flow canal.
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Velešík, Aleš. "Stanovení výkonnosti chladicího okruhu - chladící věž." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232151.

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The aim of this work is to determine the performance and description of the cooling circle in the cooling tower. In order to do that there was applied the linear regression approach in order to create structural empirical model of the cooling tower. The data obtained was analysed through QC expert software, which, if correct data applied, identifies suitable model for specific tower. The models created will be used for diagnostics of the cooling circles and as a comparison tool with other cooling towers in the future. Thus, the findings of this thesis are polynoms, which in thic technological setup characterise the models of the cooling towers.
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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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Conference papers on the topic "Clausius-Rankine cycle"

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Barbieri, Enrico Saverio, Mirko Morini, and Michele Pinelli. "Development of a Model for the Simulation of Organic Rankine Cycles Based on Group Contribution Techniques." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45616.

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Many industrial sectors and applications are characterized by the availability of low enthalpy thermal sources with temperatures lower than 400 °C, such as the ones deriving from both industrial processes (e.g. combustion products from gas turbines and internal combustion engines, technological processes and cooling systems) and renewable sources (e.g. solar and geothermal energy). The usual systems for the conversion of thermal energy into mechanical and/or electrical energy work due to the high temperature difference available between the source (i.e., combustion products) and the sink (i.e., the ambient). The Organic Rankine Cycle (ORC) is a promising process for conversion of heat at low and medium temperature to electricity. An ORC system works like a Clausius–Rankine steam power plant but uses an organic working fluid instead of water. A certain challenge is the choice of the organic working fluid and of the particular design of the cycle. The process should have high thermal efficiency and allow a high coefficient of utilization of the available heat source. Moreover, the working fluid should fulfill safety criteria, it should be environmentally friendly, and allow low cost for the power plant. An important aspect for the choice of the working fluid is also the temperature of the available heat source, which can range from low (about 100 °C) to medium temperatures (about 350 °C). In this paper, a model for the simulation of Organic Rankine Cycles is presented. The model is based on thermodynamics tables for the calculation of fluid properties and the Lee-Kesler method for the calculation of specific heat. Six commonly used working fluids (propane, butane, benzene, toluene, R134a and R123) are considered. Both saturated and superheated cycles are evaluated. A sensitivity analysis of the main process parameters is performed. Finally, the model is applied to a micro gas turbine/ORC combined cycle.
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Rautenberg, M., M. Malobabic, A. Mobarak, and M. Abdel Kader. "Design and Testing of a 10KW Steam Turbine for Steam Turbochargers." In ASME 1985 Beijing International Gas Turbine Symposium and Exposition. American Society of Mechanical Engineers, 1985. http://dx.doi.org/10.1115/85-igt-113.

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A Clausius-Rankine-cycle has been proposed to recover waste heat from a piston engine. This waste heat is then used to supercharge the cylinders by means of a steam turbocharger. The advantage of using this steam turbocharger system is to avoid the losses due to the engine back pressure which accompany the use of the conventional exhaust gas turbocharger. The mass flow rate of turbines for steam turbochargers in the range from 1 to 10 kW is about 0.03 to 0.08 kg/s. This implies a special turbine design, characterised by partial admission and supersonic flow, which unfortunately leads to low turbine efficiencies. A small Pelton turbine for steam has been designed and produced. The turbine is connected to the radial compressor of a conventional exhaust gas turbocharger which works, in this case, as a brake to dissipate the generated turbine power. A special test rig has been built to carry out the experimental investigations on the proposed Pelton turbine. The test rig is supplied with superheated steam from the University’s power plant. Two different rotors for this Pelton turbine have been tested under the same operating conditions (rotor 2 see Fig. 1). Some experimental test results of a special Pelton turbine are presented and discussed in this report.
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