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  4. Cancelled: NextORC Dissemination Workshop




Cancelled: NextORC Dissemination Workshop




This event is due to take place later in the year.

About NextORC

NextORC (Fundamental studies on organic Rankine cycle expanders) is an EPSRC-funded research project (grant number: EP/P009131/1) that has been conducted at City, University of London between April 2017 and April 2020. The focus of the project has been to improve fundamental understanding on the performance of screw and turbo expanders within ORC systems. The project has been a collaboration between the Turbomachinery and Compressor Centre research groups at City, with support from the industrial partner, Heliex Power.

Aim of workshop

The aim of this workshop is twofold:

  • the first is to provide a platform on which to disseminate the key research activities and research findings from the NextORC project;
  • the second is to host a number of talks from key members within the ORC community from across academia and industry to discuss the future of ORC systems.


Commercial steam power plants pressurise and heat water to produce steam which is then expanded to produce electricity. However, using an organic fluid permits low temperature heat sources, typically between 80 and 350 °C, to be converted into mechanical power more economically than steam. Organic Rankine cycles (ORC) have a great potential to contribute to the UK's mix of low-carbon technologies with promising applications such as combined heat and power, concentrated-solar power and waste-heat recovery from reciprocating engines and other industrial processes with waste heat streams. However, despite successful commercialisation for industrial-scale applications, more development is required at the commercial and domestic scales before its potential can be realised. More specifically, at these small-scales, the challenge lies in the design of systems that are efficient but are also low cost. One approach to achieving this is to develop systems that operate efficiently over a range of different conditions. This will enable the high-volume, low-cost production of ORC systems, enabling significant improvements in the economy-of-scale. Furthermore, at this scale, different expander technologies, such as turbo and screw expanders, and system architectures can be considered. However, it is not clear which expander technology or system architecture is the optimal choice to achieve the desired improvements in the economy-of-scale. To answer this question, it is important to improve the understanding of how different ORC expanders perform across a wide range of operating conditions, and to investigate how these systems respond to changes in the working fluid.

Workshop schedule

09:15 – 09:45

Registration and Arrival refreshments

09:45 – 10:00

Welcome and NextORC project overview

10:00 – 10:20

Turbine modelling activities (WP1)

10:20 – 10:40

Screw expander modelling (WP2)

10:40 – 11:00

Cycle modelling and optimisation (WP4)

11:00 – 11:15

Coffee break

11:15 – 11:55

Invited speakers: Session one

11:55 – 13:00

Test rig development and laboratory tour (WP3)

13:00 – 14:00


14:00 – 15:00

Invited speakers: Session two

15:00 – 15:20

Coffee break

15:20 – 16:20

Invited speakers: Session three

16:20 – 17:00


Confirmed guest speakers

  • Professor Piero Colonna, Delft University of Technology - 'Developments in NICFD and the ORCHID test facility'
  • Professor Vincent Lemort, University of Liege - 'Feedback from the experimental comparison of different volumetric expanders'
  • Dr Giuseppe Bianchi, Brunel University London - 'Overview of waste-heat potential in industry and summary of sCO2 developments at Brunel'
  • Dr Apostolos Pesyridis, Brunel University London - 'Overview of ORC research for automotive and industrial waste heat recovery at Brunel'
  • Dr Andy Pearson, Star Refrigeration - 'Overview of expander technologies: Similarities and differences with refrigeration expanders'
  • Professor Dan Wright, Heliex Power - 'Experiences with screw machines as steam expanders'
  • Professor Christos Markides, Imperial College London - TBC

For further details please contact Dr Martin White, 020 7040 0281

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When and where

9.15am - 5.00pmMonday 6th April 2020

C309 Tait Building City, University of London Northampton Square London EC1V 0HB United Kingdom