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An innovative ceramic high temperature plate-fin heat exchanger for EFCC processes

Schulte-Fischedick, Jan and Dreißigacker, Volker and Tamme, Rainer (2006) An innovative ceramic high temperature plate-fin heat exchanger for EFCC processes. Applied Thermal Engineering, 27 (8-9), pp. 1285-1294. Elsevier Ltd.. DOI: 10.1016/j.applthermaleng.2006.11.007 ISSN 1359-4311

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For heat exchanger applications needing extreme operation temperatures such as in the field of power generation or heat recovery a ceramic plate-fin heat exchanger is proposed, based on the “Offset Strip Fin” design. At first the principal selection of the materials and the Environmental Barrier Coating (EBC) needed to protect the substrate from the aggressive flue gases is explained. Then a manufacturing process is described able to incorporate the EBC on all parts having contact to the flue gases. On the basis of a representative biomass fuelled Externally Fired Combined Cycle (EFCC) process with an electrical output of 6 MW the thermal design is presented resulting in a ceramic heat exchanger block of weight 4.0 t and surface area densities of 443 mm²/mm³ on the flue gas side and 286 mm²/mm³ on the pressurized process gas side. To ensure the thermo mechanical integrity investigations of both the steady state operation and the case of an emergency stop were investigated by means of Finite Element Method (FEM). In the case of steady state operation a security factor of 8.5 was achieved. This demonstrates that the stresses in both cases are controllable.

Item URL in elib:https://elib.dlr.de/44257/
Document Type:Article
Title:An innovative ceramic high temperature plate-fin heat exchanger for EFCC processes
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:21 July 2006
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.applthermaleng.2006.11.007
Page Range:pp. 1285-1294
Publisher:Elsevier Ltd.
Keywords:ceramic plate-fin heat exchanger, design, EFCC, heat recovery, manufacturing,
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E VG - Combustion and Gas Turbine Technologies (old)
DLR - Research area:Energy
DLR - Program:E VG - Combustion and Gas Turbine Technologies
DLR - Research theme (Project):E - Gasturbine (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Schulte-Fischedick, Dr.-Ing. Jan
Deposited On:06 Feb 2007
Last Modified:14 Jan 2010 23:07

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