Design and Experimental Study of Organic Rankine Cycle System
A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J1: Heat and Mass Transfer".
Deadline for manuscript submissions: 10 August 2025 | Viewed by 477
Special Issue Editors
Interests: organic Rankine cycle (ORC) systems; thermodynamics; heat transfer; waste energy recovery; renewable energy; energy management; volumetric machines
Special Issues, Collections and Topics in MDPI journals
Interests: organic Rankine cycle (ORC) systems; thermodynamics; heat transfer; two-phase expansion system; artificial intelligence; phase equilibria; volumetric machines
Special Issue Information
Dear Colleagues,
The global push for decarbonization has driven significant innovation across power generation systems and industrial and manufacturing processes. As the urgency of reducing greenhouse gas emissions rises, transitioning energy generation to cleaner and more sustainable practices becomes a necessity. This shift requires improving energy efficiency and integrating renewable energy sources into energy systems. Also, there has been growing research interest in the recovery and valorisation of waste heat. One promising technology in this area is the organic Rankine cycle (ORC), which thermodynamically converts low-grade heat sources (such as waste heat from industrial processes, geothermal energy, solar thermal energy, biomass, and so on) into electricity. In addition, the ORC can harness cold energy from the regasification processes of liquefied natural gas (LNG), hydrogen, and other cryogenic substances. In recent years, various advanced ORC configurations have been developed to enhance the system’s performance, efficiency, and flexibility. These developments include the transcritical ORC, CO2 power cycles, ORC systems integrated with thermal energy storage (TES), the ORC with two-phase expansion systems (e.g., trilateral ORC or trilateral flash cycle/TFC, partially evaporated ORC/PE-ORC, wet-to-dry cycle, and organic flash cycle/OFC), and the ORC in Carnot batteries. Despite these advancements, there is a lack of design and experimental studies on these configurations and applications. Therefore, it is essential to conduct detailed experimental research and pilot projects that examine their performance under a wide range of operating conditions and with various environmentally friendly organic working fluids. The goal of this Special Issue is to highlight state-of-the-art designs and experimental research in the development of ORC systems and their components.
The topics of interest for this Special Issue include, but are not limited to, the following:
- The ORC with two-phase expansion systems (TFC, PE-ORC, and OFC);
- Wet-to-dry cycles;
- The ORC and polygeneration systems;
- CO2 power cycles and the transcritical ORC;
- The ORC directly and/or indirectly integrated with TES;
- The use of the ORC using environmentally friendly organic working fluids (pure/mixtures);
- Pilot project and laboratory-scale ORCs;
- The ORC for industrial applications;
- The ORC for cold energy utilization;
- The ORC for Carnot batteries;
- New integrations of the ORC with other processes and energy systems;
- ORC components: turbine/volumetric expanders, heat exchangers, and pump designs;
- Partial-evaporation heat exchangers for the ORC;
- Two-phase expanders for the ORC;
- All topics related to the design of and experimental studies on the ORC.
Prof. Dr. Piotr Kolasiński
Dr. Sindu Daniarta
Guest Editors
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Keywords
- organic Rankine cycle
- polygeneration systems
- power generation
- two phases
- phase equilibria
- energy systems
- waste heat recovery and valorisation
- energy conversion
- carnot battery
- energy storage
- clean and sustainable energy
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