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Master's Thesis
Author of thesis: Ing. Žaneta Janíčková
Acad. year: 2018/2019
Supervisor: doc. Ing. Bc. Jan Fišer, Ph.D.
Reviewer: Ing. Róbert Toma, Ph.D.
This diploma thesis is focused on the assessment of the influence of moisture on the thermal properties of the gloves. The first part of the thesis deals with the research of topics related to the given issue as well as with the derivation of the computational relations needed for evaluation of experimental measurements. The main focus of the work lies on defining the hypotheses and experiments that are used to verify the influence of moisture on the thermal resistance of gloves. As for the experimental part, it describes the individual methods of moistening the gloves from which the moistening through the air humidity and the moistening by the immersion were analysed. To verify the suitability of selected moistening methods, the tested glove samples were measured on the thermal manikin both in a dry and a moistened state under the conditions defined by ČSN EN 511 and ČSN EN ISO 15831 standards. Individual states were repeatedly measured and afterwards the progresses of thermal resistance depending on time were graphically displayed. The thesis also includes analysis of measurement uncertainties as well as evaluation of measurement repeatability. From the obtained results, both the defined hypotheses and theoretical assumptions about the decrease of the thermal resistance of a textile material due to the influence of moisture were confirmed in the conclusion of the diploma thesis.
Thermal resistance, moisture, thermal manikin, experimental measurement, gloves
Date of defence
11.06.2019
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Zodpovězeny dotazy oponenta. Doc. Jedelský se zeptal jaký je význam výrazu "váha", který je v práci použit? Doc. Jedelský se dotázal, zda rychlost je jediným faktorem, který ovlivňuje odpařování z povrchu rukavic? Prof. Pavelek se dotázal proč ke generaci proudění vzduchu kolem rukavic nebyla použita velkoplošná výustka? Doc. Jedelský se zeptal jak je vlhkost rukavic zohledněna v metodice měření dle současných norem? Studentka zodpověděla všechny dotazy.
Language of thesis
Czech
Faculty
Fakulta strojního inženýrství
Department
Energy Institute
Study programme
Mechanical Engineering (M2I-P)
Field of study
Environmental Engineering (M-TEP)
Composition of Committee
doc. Ing. Jaroslav Katolický, Ph.D. (předseda) prof. Ing. Miroslav Jícha, CSc. (místopředseda) prof. Ing. František Kavička, CSc. (člen) prof. Ing. Milan Pavelek, CSc. (člen) prof. Ing. Jan Jedelský, Ph.D. (člen) Ing. Stanislav Patočka, Ph.D. (člen) doc. Ing. Bc. Jan Fišer, Ph.D. (člen)
Supervisor’s reportdoc. Ing. Bc. Jan Fišer, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportIng. Róbert Toma, Ph.D.
Grade proposed by reviewer: A
Responsibility: Mgr. et Mgr. Hana Odstrčilová