The Influence of Extreme Temperatures on Thermal Conductivity of the Grouting Mixture Designated for Borehole Heat Exchanger

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F21%3A10248238" target="_blank" >RIV/61989100:27350/21:10248238 - isvavai.cz</a>

Result on the web

<a href="https://archive.iii.kyushu-u.ac.jp/public/NQNIAADIso-A-C0BjL99e5pPzasJN_ukz63FlZAQl-vb" target="_blank" >https://archive.iii.kyushu-u.ac.jp/public/NQNIAADIso-A-C0BjL99e5pPzasJN_ukz63FlZAQl-vb</a>

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

The Influence of Extreme Temperatures on Thermal Conductivity of the Grouting Mixture Designated for Borehole Heat Exchanger

Original language description

At present, a huge emphasis is placed on the utilization of various alternative sources of energy worldwide. The ground-source heat pump draws heat from the rock environment with low consumption of electrical power, and therefore it achieves the criteria of social responsibility to the environment. Similar aspects are set for borehole thermal energy storage (BTES), in the principle of storing heat surpluses or waste heat to the rock environment and its subsequent draw. The research focuses on determining the thermophysical properties (thermal conductivity) of the grouting mixtures. Presented laboratory research focuses on assessing the effect of extreme temperature fluctuations (-20 oC the lowest, 80 oC the highest) on the quality of the tested grouting mixtures. Samples are exposed to very low and very high temperatures within the research, which lead to a decrease of the thermal conductivity in a laboratory set environment and cause visible degradation of the structure of researched mixture at the same time. Subsequent desiccation of the samples causes the occurrence of discontinuity, which is predisposing to worsen the applied properties of the grouting mixtures. The objective of this research is to describe what and how significant changes occur in collectors.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

—

Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

International Symposium on Earth Science and Technology 2021 : proceedings : November 25-26, 2021, Shiiki Hall, Kyushu University, Fukuoka, Japan

ISBN

978-4-9902357-0-3

ISSN

—

e-ISSN

—

Number of pages

6

Pages from-to

377-382

Publisher name

CINEST

Place of publication

Fukuoka

Event location

Fukuoka

Event date

Nov 25, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—