Experimental investigation of a helical coil heat exchanger operating at sub- and supercritical state in a small-scale solar orc installations

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dc.contributor.author Lazova, M. en
dc.contributor.author Kaya, A. en
dc.contributor.author Huisseune, H. en
dc.contributor.author De Paepe, M. en
dc.date.accessioned 2017-08-28T07:08:42Z
dc.date.available 2017-08-28T07:08:42Z
dc.date.issued 2016 en
dc.description Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016. en
dc.description.abstract In this study, an experimental investigation of the performance a helical coil heat exchanger operating at sub- and supercritical conditions was carried out. The heat exchanger was coupled and tested in a small-scale Organic Rankine Cycle installation with a net cycle capacity of 3 kW and with a heat source inlet temperature of 100 °C. The first measurements were conducted under controlled conditions in a laboratory. Towards determining the effects of different parameters on the heat transfer rate in the heat exchanger several set of measurements were conducted. Particularly, the performance analysis are elaborated considering the changes of various parameters such as the mass flow rate, inlet temperature and operating pressure of the organic (working) fluid (R-404A) at the cold side. While all the parameters at the inlet of the hot side were kept stable for all set of measurements. From the experimental results and the performance evaluation of the heat exchanger it was found that a better performance is achieved when operating at supercritical state.
dc.format.extent 6 pages en
dc.format.medium PDF en
dc.identifier.uri http://hdl.handle.net/2263/62096
dc.language.iso en en
dc.publisher HEFAT en
dc.rights University of Pretoria en
dc.subject Helical coil heat exchanger en
dc.subject Sub-and subecritical state en
dc.subject Small-scale solar en
dc.subject Organic rankine cycle installations en
dc.title Experimental investigation of a helical coil heat exchanger operating at sub- and supercritical state in a small-scale solar orc installations en
dc.type Presentation en


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