Ceramics and ceramic matrix composites for heat exchangers in advanced thermal systems—A review

Sommers, Andrew D.; Wang, Qin; Han, Xiaohong; T’Joen, Christophe; Park, Young-Gil; Jacobi, Anthony M.

doi:10.1016/j.applthermaleng.2010.02.018

Cited by 235 publications

(99 citation statements)

References 43 publications

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“…A double layered glass-ceramic applied to a Ti alloy for improved oxidation resistance at temperatures up to around 800°C has also been reported recently [127]. A recent review of ceramics employed in heat exchangers also makes reference to glass sealants [128].…”

Section: Sofc Alloysmentioning

confidence: 99%

Recent developments in the preparation, characterization and applications of glass- and glass–ceramic-to-metal seals and coatings

et al. 2011

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There has, in recent years, been a major revival of interest in glass-and glass-ceramic-to-metal seals and coatings for new applications. Experience dictates that many factors need to be taken into consideration in the successful design and manufacture of high-quality seals, particularly if an adequate component lifetime is to be achieved. For example, during their preparation, undesirable reactions may occur between diffusing metal species and glass constituents, and these can lead to the formation of highly localized internal stresses, which can initiate failure of a seal either during manufacture or, more seriously, whilst in service due to the influence of static fatigue. In the case of high-temperature systems, reactions under hostile operating conditions also need to be taken into consideration. In this review, the factors learnt from past experience that influence the formation and lifetime behaviour of glass and glass-ceramic/metal systems are briefly introduced, and their relevance to the newer applications including solid oxide fuel cell sealants and coatings on titanium for biomedical applications is discussed.

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Section: Sofc Alloysmentioning

confidence: 99%

Recent developments in the preparation, characterization and applications of glass- and glass–ceramic-to-metal seals and coatings

et al. 2011

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“…In general, Limited research activities have been found on the use of porous ceramic materials systems as wetting pads for evaporative cooling applications [17]- [22]. Nevertheless, porous ceramic is considered to be a promising material in heat transfer augmentation [23].…”

Section: Wet Media Materials Of Iec Systemsmentioning

confidence: 99%

Experimental and Numerical Study of a Heat Pipe Based Indirect Porous Ceramic Evaporative Cooler

Boukhanouf¹,

Alharbi²,

Amer³

et al. 2015

IJESD

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Abstract-Indirect evaporative coolers are one of the most possible alternatives to conventional cooling methods for building air-conditioning. It utilizes evaporation of water to cool the air, consumes much less power, and employs no harmful refrigerants comparing to other traditional cooling cycles such as vapor compression coolers. This paper presents a mathematical model and experimental investigation of thermal performance of an indirect porous ceramic evaporative cooler with integrated heat pipe for heat transfer. It is shown that good agreement was achieved between the computer model and measured parameters of the cooling system. In the regions with hot and dry climates the system can be an environmentally friendly and energy efficient cooling system. Index Terms-Indirect evaporative cooling, heat pipe, porous ceramic, dew-point effectiveness.

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“…SiC maintains its flexural strength at elevated temperatures and shows good thermal shock resistance. SiC is chemically inert in many environments and possesses high thermal conductivity (about four times that of steel) (Sommers et al 2010). SiC is able to operate safely at higher temperatures (~1300°C) than metallic alloys (Heat Transfer International Homepage 2011).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Feasibility Study of Secondary Heat Exchanger Concepts for the Advanced High Temperature Reactor

Sabharwall¹

2011

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An evaluation of viable secondary heat exchanger concepts for use with a molten salt nuclear reactor is presented based on thermal design studies using KF-ZrF 4 as the secondary coolant. Along with the potential issues related to materials, fabrication methods, system configuration, coolant properties and hot corrosion, a discussion of challenges associated with integrating a steam power cycle with the reactor is also presented. The reference reactor design and configuration is a 3,400 MW t advanced high temperature reactor utilizing Rankine subcritical or supercritical cycles for power production. vi SUMMARYAdvanced High Temperature Reactors (AHTRs) will produce high outlet temperatures (704°C) using coated particle fuel, which provides for improved efficiency in power production or process heat for a variety of industrial applications. The AHTR is part of the fluoride-salt-cooled high temperature reactor (FHR) class of nuclear reactors included in the advanced reactor concept program. Early design decisions for the AHTR include use of an intermediate heat exchanger (IHX) to couple the primary loop to an intermediate loop. Heat from the IHX will be circulated in the intermediate loop through a secondary heat exchanger (SHX) and transferred to a power cycle that produces electricity or transferred to an industrial process. The feasibility of design options for the SHX is the subject of this study, and for the purposes of this study, the following preliminary decisions were made as a baseline for comparison:x The reactor outlet temperature is 704°C, from which the primary, secondary and tertiary fluid temperatures are derived. x The intermediate loop fluid is KF-ZrF 4 , which determines the SHX upstream side fluid and fluid conditions. x A supercritical or subcritical steam cycle is connected downstream of the SHX for power production, setting the fluid conditions on the downstream side. x The SHX is either a helically coiled tube and shell design or a printed circuit heat exchanger (PCHE) design. x The baseline material of construction is Alloy N.Alternative parameters are evaluated in this study and compared to the baseline based on the feasibility of their implementation.Heat exchangers are considered key components that need to be extensively investigated because they are operated under a severe environment and their performance is directly related to the overall system efficiency and safety. Previous analysis (INL/EXT-11-21584) of the power conversion system showed that Rankine subcritical and supercritical cycles with a turbine inlet temperature of 679°C can yield conversion efficiencies of 42% and 44% respectively, with KF-ZrF 4 as the secondary salt coolant.Fluoride salts such as KF-ZrF 4 have highly desirable characteristics for high temperature nuclear reactor heat transport. A characteristic of molten fluoride salts is that they can easily dissolve passive oxide layers such as the chromia oxide film (Cr 2 O 3 ) that provides the corrosion resistance for stainless steels and nickel based alloys...

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Ceramics and ceramic matrix composites for heat exchangers in advanced thermal systems—A review

Cited by 235 publications

References 43 publications

Recent developments in the preparation, characterization and applications of glass- and glass–ceramic-to-metal seals and coatings

Recent developments in the preparation, characterization and applications of glass- and glass–ceramic-to-metal seals and coatings

Experimental and Numerical Study of a Heat Pipe Based Indirect Porous Ceramic Evaporative Cooler

Feasibility Study of Secondary Heat Exchanger Concepts for the Advanced High Temperature Reactor

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