dc.creator | Mirković Marjanović, Milica | |
dc.creator | Kijanović, Aleksandar | |
dc.creator | Ilić, Snežana | |
dc.creator | Janković, Ksenija | |
dc.creator | Zakić, Dimitrije | |
dc.date.accessioned | 2022-12-07T11:37:28Z | |
dc.date.available | 2022-12-07T11:37:28Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 0354-9836 | |
dc.identifier.uri | https://grafar.grf.bg.ac.rs/handle/123456789/2826 | |
dc.description.abstract | The guarded hot plate (GHP) method is a widely used technique to measure
thermal conductivity of thermal insulation specimens in steady-state conditions.
In this paper, an advance of GHP has been developed in the Laboratory for
Thermal Technique and Fire Protection in Institute IMS. The innovative GHP
has been applied for measuring thermal conductivity using additional heat flux
meters. The design of this GHP is similar to the design of the plate for GHP apparatus, however, it has different design: smaller width of thermal barrier, which
is filled with insulation glue. Heaters inside hot and guard plates are built from
wire for thermocouples, which is a unique type of heater. Geometry of heater has
been optimized inside plates to achieve uniform temperature distribution along
the specimen surface. Temperature uniformity of GHP and energy balance were
experimentally determined. The verification and validation results of improved
GHP have been shown. The test method was validated comparing test results of
thermal conductivity with results of the round-robin test. Four national companies participated in the round-robin comparison on thermal conductivity measurement by GHP method. The measurement was performed on the same specimen
of thermal insulation material (expanded polystyrene) according to SRPS EN
12667 at temperatures ranging between 10-40 °C. The measured thermal conductivity of all participants in the round-robin test was input data for statistical
processing according to SRPS ISO 5725-2 and ISO 13528. To evaluate the performance of the participants, the “z” score has been used. Measurements were
conducted successively for all participants. Since 2020, the Accreditation Body of
Serbia also approved this test method. | sr |
dc.language.iso | en | sr |
dc.publisher | Society of Thermal Engineers of Serbia | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200012/RS// | sr |
dc.rights | openAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Thermal Science | sr |
dc.subject | Thermal conductivity | sr |
dc.subject | heat plate | sr |
dc.subject | SRPS EN 12667 | sr |
dc.subject | GHP apparatus with heat fluxmeters | sr |
dc.subject | method verification and validation | sr |
dc.title | Verification and Validation of an Advanced Guarded Hot Plate for Determination of Thermal Conductivity | sr |
dc.type | article | sr |
dc.rights.license | BY-NC-ND | sr |
dc.citation.epage | 4747 | |
dc.citation.issue | 6A | |
dc.citation.rank | M23~ | |
dc.citation.spage | 4735 | |
dc.citation.volume | 26 | |
dc.identifier.doi | 10.2298/TSCI220311108M | |
dc.identifier.fulltext | http://grafar.grf.bg.ac.rs/bitstream/id/10851/0354-98362200108M.pdf | |
dc.type.version | publishedVersion | sr |