@InProceedings{SilvaRieh:2018:ExNuSt,
author = "Silva, D{\'e}bora de Oliveira and Riehl, Roger Ribeiro",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Experimental and Numerical Study of the Thermal Performance of
Water-Stainless Steel Heat Pipes Operating in Mid- Level
Temperature",
booktitle = "Proceedings...",
year = "2018",
organization = "Heat Powered Cycles Conference",
keywords = "heat pipe, experimental heat pipe, simulation, thermal
performance.",
abstract = "Thermal performance of water-stainless steel screen mesh wick heat
pipes was investigated in this study. Three screen mesh wick heat
pipes were fabricated and tested all different inclinations, and
their thermal conductance in different modes were compared
(experimental, calculated and numerical). The different mesh
numbers can bring different meanings in terms of both liquid flow
resistance and capillary pumping. The aim was to analyze the
thermal behavior in the permanent and transient regime for each
power when operated with the power step and power cycles in
mid-level temperature, for use in several industrial and aerospace
applications when those levels of temperature are required. The
calculated thermal conductances based on the thermal resistance
analysis were used to be compared with the obtained experimental
thermal conductances. An adjustment factor was calculated with the
objective of being used in the results of the calculated thermal
conductances to bring them closer to the actual results that were
obtained experimentally with the water-stainless heat pipes. The
numerical approaches undertaken in analysing the transient thermal
performance was used the multifluid model where two different
fluid zone were created to represent vapour flow in the middle and
liquid flow in the porous wick. The predicted surface temperatures
with varying heat inputs (25 W - 125 W) from the numerical model
and experimental tests were used for thermal conductance
(numerical and experimental) were compared with calculated thermal
conductance.",
conference-location = "Germany",
conference-year = "16-19 sept.",
language = "en",
targetfile = "silva_experimental.pdf",
urlaccessdate = "02 maio 2024"
}