elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Development of a profiled multiplayer tube for high temperature solar receivers and heat exchangers

Jedamski, Jens and Reiner, Buck and Heller, Peter and Uhlig, Ralf and Amsbeck, Lars and Couturier, Raphael and Tochon, Patrice and Vasquez Arango, Juan Felipe (2010) Development of a profiled multiplayer tube for high temperature solar receivers and heat exchangers. In: referiert. 14th International Heat Transfer Conference (IHTC 14), 08.-13. Aug. 2010, Washington D.C., USA.

[img] PDF - Registered users only
791kB

Abstract

In solar tower plants absorber tubes are the main components of various solar receivers, e.g. steam, salt, pressurized air receivers. The solar radiation on the absorber tube causes an inhomogeneous temperature distribution because most of the solar radiation along the tube circumference is one-sided. The resulting internal stresses of the tube decrease the lifetime and the maximum fluid temperature significantly, especially when heat transfer coefficients are low. Within the projects SOLHYCO and FUTUR a profiled multilayer tube (PML) is currently under development in order to reduce this problem. It consists of three metallic layers: a high temperature nickel-based alloy at the outer side, a copper layer as intermediate layer and another high temperature nickel-based alloy at the inner side of the tube. The outer layer provides the structural strength while the copper is used to conduct the heat from the irradiated side to the opposite side. The inner layer protects the copper from corrosion and oxidation at high temperatures. In addition, a wire coil is inserted (profiled) to increase the heat transfer on the inside. The PML is manufactured in a hydro-forming process by deforming the tube composite with water under high pressure. To demonstrate the performance and to determine the heat transfer, the pressure loss and the temperature distribution, a test loop was built to simulate the different loads under laboratory conditions. The thermo hydraulic measurements and finite element calculations show that the temperature gradient and the maximum temperature can be reduced significantly. Based on these studies the advantages of the PML in comparison to common tubes will be presented as well as several possibilities for future improvements.

Item URL in elib:https://elib.dlr.de/83605/
Document Type:Conference or Workshop Item (Paper)
Title:Development of a profiled multiplayer tube for high temperature solar receivers and heat exchangers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jedamski, JensInstitut für SolarforschungUNSPECIFIED
Reiner, Buckreiner.buck (at) dlr.deUNSPECIFIED
Heller, Peterpeter.heller (at) dlr.deUNSPECIFIED
Uhlig, Ralfralf.uhlig (at) dlr.deUNSPECIFIED
Amsbeck, Larslars.amsbeck (at) dlr.deUNSPECIFIED
Couturier, RaphaelCommissariat a L´Energie AtomiqueUNSPECIFIED
Tochon, PatriceCommissariat a L´Energie AtomiqueUNSPECIFIED
Vasquez Arango, Juan FelipeJuan.VasquezArango (at) dlr.deUNSPECIFIED
Date:2010
Journal or Publication Title:referiert
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:solar tower plants, fluid temperature, SOLHYCO and FUTUR, Develepment of a profiled multiplayer tube
Event Title:14th International Heat Transfer Conference (IHTC 14)
Event Location:Washington D.C., USA
Event Type:international Conference
Event Dates:08.-13. Aug. 2010
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Punktfokussierende Systeme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research
Deposited By: Uhlig, Tamara
Deposited On:29 Jul 2013 16:42
Last Modified:01 Dec 2018 19:49

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.