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Showing 1 to 20 of 34 for “"Organic Rankine cycle"”.
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ANALYSIS OF A ROTATING SPOOL EXPANDER FOR ORGANIC RANKINE CYCLE APPLICATIONS
Increasing interest in recovering or utilizing low-grade heat for power generation
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Dynamic Model and Adaptive Control of a Transcritical Organic Rankine Cycle
The Transcritical Organic Rankine Cycle (TORC) is a non-linear time-varying heat recovery system for small-scale power generation. It is similar to a boiler-turbine system but uses organic fluid as the primary heat carrier instead of H2O and works in both subcritical and supercritical regions. The …
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Design And Optimization Of Organic Rankine Cycle For Low Temperature Geothermal Power Plant
… feasible for commercial power generation. Organic Rankine Cycle (ORC) technology makes it feasible to use low temperature resources to generate power by using low boiling temperature organic liquids. The first hypothesis for this research is that using ORC is technologically and …
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Conversion of a scroll compressor to an expander for organic Rankine cycle: modeling and analysis
… of a scroll compressor to an expander for organic Rankine Cycle: modeling and analysis
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Charge-sensitive methods for the off-design performance characterization of organic Rankine cycle (ORC) power systems
The organic Rankine cycle (ORC) is among the most suited technologies to convert low-grade and low-capacity heat sources into useful work. For many reasons - including predictive control, optimal sizing or performance forecast - a proper understanding and characterization of the ORC behaviour under …
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A study of organic Rankine cycle systems with the expansion process performed by twin screw machines
… of this work was to study, model and analyse an Organic Rankine cycle (ORC) system using a twin screw expander to generate the power output, with HFC-245fa, as the working fluid. A software package (Power Plant Performance Prediction Program), simulating ORC system performance was therefore …
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Investigation of a heat pump reversible in an organic Rankine cycle and its application in the building sector
… studies the concept of reversible heat pump / organic Rankine cycle (HP/ORC) and its application in the building sector. Chapter one describes this HP/ORC system and its possible applications. A tool based on operating maps is developed to determine the feasibility of such a system depending on …
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Dynamic modeling and control strategies for a micro-CSP plant with thermal storage powered by the Organic Rankine cycle
Organic Rankine cycle (ORC) systems are gaining ground as a means of effectively providing sustainable energy. Coupling small-scale ORCs powered by scroll expander- generators with solar thermal collectors and storage can provide combined heat and power to underserved rural communities. Simulation …
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A Unified Theory Characterising the Spontaneous Condensation Tendency of Working Fluids in Organic Rankine Cycle Expansion: Key Difference from Steam and its Implications
… of various working fluids during a typical Organic Rankine Cycle (ORC) expansion from slightly superheated condition or dry-saturated condition directly into the saturation dome, in the context of an ORC expander. Traditional wisdom on steam Rankine cycles dictates that the expansion process …
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Modeling and multi-objective optimization of a photovoltaic-thermal based multigeneration system
… fluid. This heat is being transferred to an organic Rankine cycle which not only produces electricity but also produces hot water for domestic applications. The organic Rankine cycle is also coupled with quadruple ammonia water absorption chiller. A part of the net electricity is used a PEM …
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Waste heat recovery from aluminum production
… aluminum production. Three scenarios, including organic Rankine cycle (ORC) system for electric power production, heat supply system and combined heat and power (CHP) system, were proposed to recover waste heat from the exhaust gas. The electric power generation potential is estimated by ORC …
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Experimental investigation and mathematical modelling of dynamic equilibrium of novel thermo-fluids for renewable technology applications
… solar thermal system which consists of solar organic Rankine cycle and heat recovery units was designed, commissioned and tested experimentally. In the experiments, HFE 7000 refrigerant that has zero ozone depletion potential (ODP) and low global warming potential (GWP) was employed. The …
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LOW-EMISSIONS HYDROGEN FROM MCH DEHYDROGENATION: INTEGRATION WITH LNG REGASIFICATION
… flash separation, and generates power in an organic Rankine cycle to reduce/eliminate external electricity demand for hydrogen compression to the high (end use) pressure. A rigorous simulation-based optimization was performed to minimize external energy inputs. A case study with 100 tph MCH …
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Mechanical design, control and optimization of a hybrid solar microgrid for rural electrification and heat supply in sub-Saharan Africa
… system includes PV, Parabolic Trough Collectors, Organic Rankine Cycle and LPG generator, as well as chemical battery storage and thermal energy storage. The work focuses on multiple aspects of the ongoing development of solar hybrid microgrids for the rural electrification of remote areas in …
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Performance of Deep Geothermal Energy Systems
… is converted into electricity using turbine or organic rankine cycle (ORC). The main feature of the system is the employment of side channels to increase the amount of thermal energy extracted. A finite difference computer model is developed to solve the heat transport equation. The numerical …
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Exergoeconomic analysis and optimization of organic Rankine cycles
… systems. This thesis explores a regenerative organic Rankine cycle for use in low temperature heat sources. A Bitzer model scroll expander is used for the prime mover for the system. This expander has a reliable model in which thermodynamic analysis can be done. Various working fluids are …
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Applications of design for value to distributed solar generation in Indian food processing and irrigation
… solar powered (p-CSP) food processing with an organic Rankine cycle (ORC). In both cases, preliminary economic feasibility is established with the use of analysis by optimization and design for value. It was found that a solar pump could be produced which costs less than 500 USD cap-ex and …
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Assessing surface and underground cooling methods, coupled to efficient ventilation systems to improve the climatic conditions in deep and hot mines
… and extracting heat from strata by means of organic rankine cycle (ORC) systems are being investigated as future alternatives.
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Low-grade Thermal Energy Harvesting and Waste Heat Recovery
… current state-of-the-art technologies, such as Organic Rankine cycle, Kalina cycle and Stirling engine. In this thesis, a fundamental breakthrough is achieved in low-grade thermal energy harvesting using thermomagnetic and thermoelectric effects. This thesis systematically investigates two …
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Cold side thermal energy storage system for improved operation of air cooled power plants
… system in order to evaluate its potential. An organic Rankine cycle geothermal power station is used as an example application. Detailed sizing and operation considerations are discussed. Several representative case studies compare the performance of candidate configurations. Operation of the …
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