Possibilities of Intensifying Heat Transfer through Finned Surfaces in Heat Exchangers for High Temperature Applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU109147" target="_blank" >RIV/00216305:26210/14:PU109147 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.applthermaleng.2014.05.052" target="_blank" >http://dx.doi.org/10.1016/j.applthermaleng.2014.05.052</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.applthermaleng.2014.05.052" target="_blank" >10.1016/j.applthermaleng.2014.05.052</a>

Result language

angličtina

Original language name

Possibilities of Intensifying Heat Transfer through Finned Surfaces in Heat Exchangers for High Temperature Applications

Original language description

High temperature heat transfer application actually represents the case of a heat exchanger operated within a process with high temperature. In every industrial domain, a different value of temperature may be considered 'high'. We are active in the field of chemical, petrochemical, waste-to-energy, power and process energy recovery heat transfer applications. Here, tube-fin exchangers are successfully used for gas or liquid and/or aggressive fluids with temperatures up to 350 and/or 400 degC. They are also frequently used in combustion systems with air preheating applications. Tubular heat exchangers, especially those with U-tubes, helical and straight tubes are most frequently used for high-temperature applications with temperatures above 650 degC. Extended surfaces are used as an intensification approach to decrease the area requirements on flue gas side. Selection of an extended surface depends on the type of fuel being burned. Generally speaking, enhanced surfaces are used for gaseous media with low heat transfer coefficient. Fins substantially enhance the heat transfer area and consequently heat duty of the equipment. This paper describes this 'passive' technique to enhancement of heat transfer in more detail and presents novel types of longitudinally finned tubes intensifying heat transfer by increasing heat transfer area and heat transfer coefficient. This means that the fins not only increase heat transfer area but also make the fluid flowing around them change flow direction, i.e., they increase turbulence. This consequently increases film heat transfer coefficient on fin side.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20401 - Chemical engineering (plants, products)

Project

<a href="/en/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Thermal Engineering

ISSN

1359-4311

e-ISSN

—

Volume of the periodical

70

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

5

Pages from-to

1283-1287

UT code for WoS article

000341556200025

EID of the result in the Scopus database

2-s2.0-84901736562