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ZMEŠKAL, O. NEŠPŮREK, S. DOHNALOVÁ, L.
Original Title
Study of PCM material diffusivity
Type
conference paper
Language
English
Original Abstract
The paper deals with the application of multi-regression analysis for the determination of thermal parameters from transient responses to step wise heat power imput. The dependences of thermal diffusivity a, thermal conductivity, heat source quality parameter s, and heat losses parameter R on time were calculated from different parts of transient responses. The influence of the heat source fractal dimension D (determined from the heat source quality parameter s) on thermal parameters is discussed. The results correlate with the fractal model of heat transport. The dependences of thermal diffusivity on the fractal dimension of PCM differ from PMMA due to the phase change around the temperature 25 C.
Keywords
transient method, fractal model of heat transport, thermal diffusivity, thermal conductivity, specific heat
Authors
ZMEŠKAL, O.; NEŠPŮREK, S.; DOHNALOVÁ, L.
RIV year
2012
Released
31. 10. 2012
Publisher
SAS Bratislava, VUT v Brně
Location
Brno
ISBN
978-80-214-4599-4
Book
Thermophysics 2012 - conference proceeding
Edition number
1
Pages from
258
Pages to
264
Pages count
7
BibTex
@inproceedings{BUT95545, author="Oldřich {Zmeškal} and Stanislav {Nešpůrek} and Lenka {Dohnalová}", title="Study of PCM material diffusivity", booktitle="Thermophysics 2012 - conference proceeding", year="2012", number="1", pages="258--264", publisher="SAS Bratislava, VUT v Brně", address="Brno", isbn="978-80-214-4599-4" }