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Development of advanced high porosity wicks for the high temperature heat pipes of concentrating solar power

Khairnasov, Sergii and Andraka, Charles and Baturkin, Volodymyr and Zaripov, Vladlen and Nishchyk, Oleksandr (2017) Development of advanced high porosity wicks for the high temperature heat pipes of concentrating solar power. Applied Thermal Engineering, 126, pp. 1170-1176. Elsevier. DOI: 10.1016/j.applthermaleng.2017.02.109 ISSN 1359-4311

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Official URL: https://www.sciencedirect.com/science/article/pii/S1359431117313042?via%3Dihub

Abstract

Sandia National Laboratories and Heat Pipes Laboratory of National Technical University of Ukraine «KPI» have developed several methods of improving robustness of the high-temperature heat pipe wick for their application to concentrating solar power systems with Stirling engine. In this case the wick structures must retain high heat pipe performance with robustness for long-term operation. Recent modeling indicates that wicks based on various fiber combinations could provide the robustness combined with sufficient performance. Results of the development, characterization, modeling, and testing of advanced felt metal wicks that addresses durability issues while maintaining sufficient performance are showed in the paper. The project resulted in an ongoing durability bench-scale heat pipe that simulates wick load conditions required for 80kWth throughput solar receiver, including periodic non-destructive evaluation of the wick durability. Two mock-ups of high-temperature heat pipes were made for long life and performance tests: the first sample with wick based on 12 μm fibers; and the second with hybrid wick based on 30 μm fibers and 6.5 μm fibers. The second heat pipe operation has continued unattended at 775 °C vapor temperature for nearly 13,600 h, with no observable loss of performance or change in startup characteristics.

Item URL in elib:https://elib.dlr.de/118574/
Document Type:Article
Title:Development of advanced high porosity wicks for the high temperature heat pipes of concentrating solar power
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Khairnasov, SergiiHeat Pipes Laboratory of National Technical University of UkraineUNSPECIFIED
Andraka, CharlesConcentrating Solar Power Department 06123, Sandia National LaboratoriesUNSPECIFIED
Baturkin, Volodymyrvolodymyr.baturkin (at) dlr.deUNSPECIFIED
Zaripov, VladlenNTUU KPI, Kyiv, UkraineUNSPECIFIED
Nishchyk, OleksandrNTUU KPI, Kyiv, UkraineUNSPECIFIED
Date:5 November 2017
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:126
DOI :10.1016/j.applthermaleng.2017.02.109
Page Range:pp. 1170-1176
Publisher:Elsevier
ISSN:1359-4311
Status:Published
Keywords:Concentrating solar power Stirling engine High-temperature heat pipe Felt metal wick
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):Huge Solar Array
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Mechanic and Thermal Systems
Deposited By: Sznajder, Dr.-Ing. Maciej
Deposited On:30 Jan 2018 11:21
Last Modified:06 Sep 2019 15:16

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