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dc.contributor.authorCampana C
dc.contributor.authorCioccolanti L
dc.contributor.authorRenzi M
dc.contributor.authorCaresana F
dc.date.accessioned2019-12-02T12:46:33Z
dc.date.available2019-12-02T12:46:33Z
dc.date.issued2019
dc.identifier.issn0360-5442
dc.identifier.urihttp://dx.doi.org/10.1016/j.energy.2019.115929
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0360544219316135
dc.identifier.urihttps://bia.unibz.it/handle/10863/11642
dc.description.abstractIn this work a small-scale non-regenerative Organic Rankine Cycle test rig has been developed to experimentally assess the performance of the scroll compressor SANDEN TRS090 converted into an expander. The performance of the expander has been evaluated using R245fa as working fluid in terms of overall efficiency and filling factor under variable flow rates, expansion ratios, rotational speeds and superheating temperatures. A peak isentropic efficiency of 45% has been obtained for an expansion ratio of 1.9–2.1 whilst the rotational speed has a minor effect. The highest values of expander overall efficiency have been achieved for a filling factor ranging from 2.5 to 3 which correspond to rotational speeds higher than 1000 rpm. During the tests the expander has achieved a mechanical power output of about 650 W for an expansion ratio in the range 2–2.2 whilst the peak values of the mechanical efficiency of the plant were >3% (self-consumption of the pump and auxiliaries excluded) for an expansion ratio of 2.2–2.5. Eventually, it was proved that the machine has no advantages in terms of overall efficiency when the fluid is superheated but the whole ORC system has a higher performance with a superheating grade in the range 10–30 K.en_US
dc.languageEnglish
dc.language.isoenen_US
dc.relation
dc.rights
dc.titleExperimental analysis of a small-scale scroll expander for low-temperature waste heat recovery in Organic Rankine Cycleen_US
dc.typeArticleen_US
dc.date.updated2019-11-30T03:00:10Z
dc.language.isiEN-GB
dc.journal.titleEnergy
dc.description.fulltextnoneen_US


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