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Nano Organic Rankine Cycle for Enhanced Heat Recovery
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.ORCID iD: 0000-0002-2992-6814
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
2013 (English)In: ASME ORC 2013, 2nd International seminar on ORC power systems, 2013Conference paper, Abstract (Refereed)
Abstract [en]

There will be an incredible energy challenge in the future. With growing population, more and more energy needs to meet society’s demands. Fossil fuels are limited resources; hence there will be need more renewable energy as well as more efficient use of energy by recovering low-grade heat source. An organic Rankine cycle (ORC) system would be attractive and promising technology for energy conversion systems in low temperature thermal energy sources. Many actual ORC’s applications have been installed; nevertheless, one of the major challenges in the ORC technology is working fluid. The difficulties involved in the accurate thermophysical properties in addition to safety of organic fluids that are commonly found in ORC, may result in relatively low efficiency as well as heat exchanger and component size. In the organic Rankine cycle, heat exchangers, including evaporators and condensers, are the dominant components with most working fluid accumulation. Moreover, the working fluid is linked to the expansion part; therefore, selecting an organic fluid and expander should be performed at the same time. Conventional Organic Rankine Cycle uses organic fluid as a working fluid, whereas nano fluid organic Rankine cycle (nORC) uses nano material and organic compound as a working fluid and it is particularly suitable for utilizing small scale heat exchangers, due to creating better thermal match both in boiling and condensing, in low temperature applications. In this work, utilizing nano organic fluid as a working fluid for ORC for Some types of nanoparticles are studied; thermophysical properties of nano ORC candidate in the specific temperature range are measured and analyzed. Also, this study presents acceptable operating conditions and expansion machine by investigating the interaction among the expansion part and nano organic working fluid.

Place, publisher, year, edition, pages
Keyword [en]
Organic Rankine Cycle, nORC, nano organic fluid, Waste heat recovery
National Category
Energy Engineering Nano Technology
URN: urn:nbn:se:kth:diva-166238OAI: diva2:810005
ASME ORC 2013, 2nd International seminar on ORC power systems, October 7th and 8th, Rotterdam, Netherlands

QC 20150506

Available from: 2015-05-06 Created: 2015-05-06 Last updated: 2015-05-06Bibliographically approved

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