THERMAL SCIENCE

International Scientific Journal

Danka M. Kostadinović

,

Dragana G. Dimitrijević Jovanović

,

Biljana S. Vučićević

,

Marina P. Jovanović

,

Snežana M. Konjikušić

SMART CAPACITIVE MOISTURE SENSOR CALIBRATION IN MINERAL WOOL AND GREEN ROOF SOIL SUBSTRATE

ABSTRACT
The environmental benefits of green roofs have been widely recognized. In recent years, increasing attention has been paid to moisture management in the green roof systems. The moisture in the green roof has an influence on its thermal and hydrological performances. An accurate measurement of water content in green roof substrate is important for irrigation monitoring, optimal irrigation management, and plant growth. Knowing the performance and characteristics of the sensor for the chosen substrate layer in a green roof system is essential. This paper presents laboratory calibration of the capacitive moisture sensor in two types of the green roof substrate layer. The volumetric water content of several mineral wool and soil samples, with the water content from low until saturated, were measured using the gravimetric method and related to frequency obtained by the sensor. The results have shown that the capacitive moisture sensor has a good response to water content variation.
KEYWORDS
Capacitive sensor, mineral wool, moisture measurement, soil, green roof.
PAPER SUBMITTED: 2020-02-17
PAPER REVISED: 2020-07-10
PAPER ACCEPTED: 2020-07-24
PUBLISHED ONLINE: 2020-08-08
DOI REFERENCE: https://doi.org/10.2298/TSCI200217228K
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 3, PAGES [1827 - 1836]
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Smart capacitive moisture sensor calibration in mineral wool and green roof soil substrate

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence