A new heat balance equation for sap flow calculation during continuous linear heating in tree sapwood

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43510%2F16%3A43909073" target="_blank" >RIV/62156489:43510/16:43909073 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.applthermaleng.2016.03.092" target="_blank" >http://dx.doi.org/10.1016/j.applthermaleng.2016.03.092</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.applthermaleng.2016.03.092" target="_blank" >10.1016/j.applthermaleng.2016.03.092</a>

Result language
angličtina
Original language name
A new heat balance equation for sap flow calculation during continuous linear heating in tree sapwood
Original language description
This article introduces a new ''linear heat balance (LHB) method"" that is based on exact (physically correct) equation analytically derived from fundamental conduction-convection heat transfer equation. Therefore, the aim of this paper is to derive and analyze a new heat balance equation for sap flow calculation from measured temperature differences around continuously heated needle. The formula is derived from the steady-state conduction and convection heat transfer equation with linear source of heat power. This paper deals with the theoretical (analytical and numerical) and experimental analysis of heat and water transfer in the conductive xylem (sapwood) of trees. The analysis and verification of the new formula is based on numerical simulation (using finite element method) and the new LHB method is demonstrated on experimentally measured data. This new approach is important not only because of more exact sap flow calculation but also for information about thermal conductivity that can be used for water content estimation
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20303 - Thermodynamics

Project
<a href="/en/project/EE2.3.30.0017" target="_blank" >EE2.3.30.0017: Postdocs in Biological Sciences at MENDELU</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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