Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measurements?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F06%3A00095663" target="_blank" >RIV/62156489:43410/06:00095663 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measurements?
Original language description
This contribution aims at improving the understanding of sap flow measurements in trees. Infrared heat field images taken around heating needles in sap transporting tree trunks are characterized by isotherms of elliptic shape with the heating needle in the lower focus. Increasing sap flow increases the eccentricity of the elliptic heat field. This dynamics of ellipses provides a simplified experimental - mathematical approach for the understanding and evaluation of the otherwise very complicated heat transfer- and distribution problem involved. The results obtained are used to discuss criteria for possible improved positioning patterns for needle sensors aimed for sap flow calculation using the dynamics of ellipses.
Czech name
Infračervené snímky tepelného pole kolem lineárního zdroje tepla v kmenech: Jakou informaci přinášejí o měření transpiračního proudu?
Czech description
Studie je zaměřena na lepší porozumění měření transpiračního proudu ve stromech. Infračervené snímkz tepelného pole měřiště transpiračního proudu je charkterizováno eliptickými isothermami se zdrojem tepla v jednom z ohnisek. Dynamika tvaru těchto elipspředstavuje yjednodušený matematický model komplikovaného přenosu tepla v kmenech.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BO - Biophysics
OECD FORD branch
—
Result continuities
Project
—
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2006
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Annals of Forest Science
ISSN
1286-4560
e-ISSN
—
Volume of the periodical
63
Issue of the periodical within the volume
7
Country of publishing house
FR - FRANCE
Number of pages
8
Pages from-to
653-660
UT code for WoS article
—
EID of the result in the Scopus database
—