scholarly journals Potential of Organic Rankine Cycle for waste heat recovery from piston engine-based power plants in isolated power systems

2021 ◽  
pp. 117815
Author(s):  
Óscar García-Afonso ◽  
Agustín M. Delgado-Torres ◽  
Benjamín González-Díaz
Keyword(s):  
Power Systems ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Power Plants ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Piston Engine

Feasibility Study of a Supercritical Cycle as a Waste Heat Recovery System

2013 ◽  
Author(s):  
Antonio Agresta ◽  
Antonella Ingenito ◽  
Roberto Andriani ◽  
Fausto Gamma
Keyword(s):  
Power Systems ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Power Plants ◽  
Energy Savings ◽  
Waste Heat ◽  
Rankine Cycle ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Organic Fluids

Following the increasing interest of aero-naval industry to design and build systems that might provide fuel and energy savings, this study wants to point out the possibility to produce an increase in the power output from the prime mover propulsion systems of aircrafts. The complexity of using steam heat recovery systems, as well as the lower expected cycle efficiencies, temperature limitations, toxicity, material compatibilities, and/or costs of organic fluids in Rankine cycle power systems, precludes their consideration as a solution to power improvement for this application in turboprop engines. The power improvement system must also comply with the space constraints inherent with onboard power plants, as well as the interest to be economical with respect to the cost of the power recovery system compared to the fuel that can be saved per flight exercise. A waste heat recovery application of the CO2 supercritical cycle will culminate in the sizing of the major components.

scholarly journals Integrated working fluid-thermodynamic cycle design of organic Rankine cycle power systems for waste heat recovery

2017 ◽  
Vol 203 ◽  
pp. 442-453 ◽  
Author(s):  
Stefano Cignitti ◽  
Jesper G. Andreasen ◽  
Fredrik Haglind ◽  
John M. Woodley ◽  
Jens Abildskov
Keyword(s):  
Power Systems ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Thermodynamic Cycle ◽  
Rankine Cycle ◽  
Working Fluid

Dry, Closed-Cycle Cooling for Thermoelectric Power Plants Employing Low Temperature Organic Rankine Cycle Waste Heat Recovery and Cool Thermal Energy Storage

2011 ◽  
Author(s):  
Jack T. Nguyen
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
Thermal Energy ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Power Plants ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Closed Cycle

A patent pending concept is presented for a dry, closed-cycle power plant cooling system employing low temperature organic Rankine cycle waste heat recovery (ORC-WHR) in combination with cool thermal energy storage (TES). It offers a compelling way for power plants to operate like conventional once-through cooling (OTC) — i.e., without an efficiency penalty due to heat rate increase experienced by state-of-the-art dry, wet, and hybrid cooling systems — while eliminating water consumption and attached negative environmental impact. Further, cool TES provides power plants the desirable capability and benefits associated with grid-scale energy storage. Key components of the concept are comprised of developed technology and field-proven equipment. Performance estimates to convert from OTC for the Diablo Canyon nuclear-powered steam electric generating facility located in central California are presented to illustrate the real benefits gained verses closed-cycle wet cooling.

scholarly journals Component-Oriented Modeling of a Micro-Scale Organic Rankine Cycle System for Waste Heat Recovery Applications

2021 ◽  
Vol 11 (5) ◽  
pp. 1984
Author(s):  
Ramin Moradi ◽  
Emanuele Habib ◽  
Enrico Bocci ◽  
Luca Cioccolanti
Keyword(s):  
Electric Power ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Operating Conditions ◽  
Working Fluid ◽  
Pump Efficiency ◽  
Micro Scale

Organic Rankine cycle (ORC) systems are some of the most suitable technologies to produce electricity from low-temperature waste heat. In this study, a non-regenerative, micro-scale ORC system was tested in off-design conditions using R134a as the working fluid. The experimental data were then used to tune the semi-empirical models of the main components of the system. Eventually, the models were used in a component-oriented system solver to map the system electric performance at varying operating conditions. The analysis highlighted the non-negligible impact of the plunger pump on the system performance Indeed, the experimental results showed that the low pump efficiency in the investigated operating range can lead to negative net electric power in some working conditions. For most data points, the expander and the pump isentropic efficiencies are found in the approximate ranges of 35% to 55% and 17% to 34%, respectively. Furthermore, the maximum net electric power was about 200 W with a net electric efficiency of about 1.2%, thus also stressing the importance of a proper selection of the pump for waste heat recovery applications.

scholarly journals Biogas Engine Waste Heat Recovery Using Organic Rankine Cycle

Energies ◽  
2017 ◽  
Vol 10 (3) ◽  
pp. 327 ◽  
Author(s):  
Alberto Benato ◽  
Alarico Macor
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle
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