Improvements to the measurement of the thermal properties of phase change materials

Kravvaritis, ED; Antonopoulos, KA; Tzivanidis, C

dc.contributor.author	Kravvaritis, ED	en
dc.contributor.author	Antonopoulos, KA	en
dc.contributor.author	Tzivanidis, C	en
dc.date.accessioned	2014-03-01T01:33:37Z
dc.date.available	2014-03-01T01:33:37Z
dc.date.issued	2010	en
dc.identifier.issn	0957-0233	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20499
dc.subject	phase change materials	en
dc.subject	PCM thermal properties	en
dc.subject	T-history method	en
dc.subject	properties measurement	en
dc.subject.classification	Engineering, Multidisciplinary	en
dc.subject.classification	Instruments & Instrumentation	en
dc.subject.other	HEAT-STORAGE MATERIALS	en
dc.subject.other	T-HISTORY METHOD	en
dc.subject.other	ENERGY-STORAGE	en
dc.subject.other	LATENT-HEAT	en
dc.subject.other	TEMPERATURE CURVES	en
dc.subject.other	ENTHALPY	en
dc.subject.other	FUSION	en
dc.subject.other	ACCURACY	en
dc.subject.other	DENSITY	en
dc.title	Improvements to the measurement of the thermal properties of phase change materials	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0957-0233/21/4/045103	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0957-0233/21/4/045103	en
heal.identifier.secondary	045103	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Improvements are proposed to the well-known T-history method, which is widely used for thermal properties measurement of phase change materials (PCM). Our improvements refer to the experimental arrangement, to the way of measurement processing, as well as to the kind and presentation format of the final results. The proposed arrangement has a controlled indoor environment and is fully automatic, without need for staff attendance, even for repeated sets of measurements of the same or different PCM simultaneously. The proposed way of measurement processing is based on the use of thermal delay (i.e. temperature difference) between PCM and a reference fluid at any specified time and not in the use of their time delay at any specified temperature. This fundamental change leads to increased accuracy and considerable reduction of duration and labour of the measurement processing, as proved by the performed measurements of various PCM. The effective thermal capacity function as a final result is proved to be more useful than the results of the original method. The new procedure is a first step towards defining specifications for the measurement of PCM thermal properties.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	MEASUREMENT SCIENCE & TECHNOLOGY	en
dc.identifier.doi	10.1088/0957-0233/21/4/045103	en
dc.identifier.isi	ISI:000275595300008	en
dc.identifier.volume	21	en
dc.identifier.issue	4	en