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Experimental Phase Diagram of the Dodecane-TridecaneSystem as Phase Change Material in Cold Storage
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. (Thermal Energy Storage (TES))ORCID iD: 0000-0002-1806-9749
KTH, School of Industrial Engineering and Management (ITM), Energy Technology. Gubkin Russian State University of Oil and Gas, Russia. (Thermal Energy Storage)
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. (Thermal Energy Storage)
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. (Thermal Energy Storage (TES))
2017 (English)In: International journal of refrigeration, ISSN 0140-7007, E-ISSN 1879-2081Article in journal (Refereed) In press
Abstract [en]

Integrating thermal storage with phase change materials (PCMs) in refrigeration and air conditioningprocesses enables energy performance improvements. Herein, the experimental phase diagram of thealkanes system dodecane-tridecane (C12H26-C13H28) is evaluated to find PCMs for freezing applications.For that, the Temperature-history method was coupled with a Tammann plot analysis. The obtainedC12H26-C13H28 phase diagram indicated a congruent minimum-melting solid solution and polymorphs. Theminimum-melting liquidus and the polymorphs identified here, agree with previous literature. However,the system does not represent a eutectic, as previously was proposed. The minimum-meltingcomposition is here identified within 15-20 mol% C13H28 compositions. The 17.7 mol% C13H28 is thenarrowest minimum-melting composition among those analyzed, melting and freezing between -16 to -12 °C and -17 to -15 °C, with: the enthalpies 185 kJ kg-1 and 165 kJ kg-1; no supercooling; and only minorhysteresis. Hence, this blend has potential as a PCM in freezing refrigeration applications.

Place, publisher, year, edition, pages
Elsevier, 2017.
Keyword [en]
phase change material (PCM); C12H26-C13H28 system; phase diagram; Temperature-history method; Tammann plot; minimum-melting
National Category
Engineering and Technology
Research subject
Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-210642DOI: 10.1016/j.ijrefrig.2017.06.003OAI: oai:DiVA.org:kth-210642DiVA: diva2:1119079
Projects
Swedish Energy Agency, project 34948-1
Funder
Swedish Energy Agency, 34948-1
Available from: 2017-07-03 Created: 2017-07-03 Last updated: 2017-07-04Bibliographically approved

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The full text will be freely available from 2019-06-08 10:30
Available from 2019-06-08 10:30

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