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Heat transfer characteristics of coal‐water mixtures
Author(s) -
Saeki Takashi,
Usui Hiromoto
Publication year - 1995
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450730317
Subject(s) - heat transfer coefficient , coal , heat transfer , thermal conductivity , thermodynamics , laminar flow , cwm , radius , materials science , air preheater , coal water , mechanics , chemistry , composite material , sparql , physics , rdf , semantic web , organic chemistry , computer security , information retrieval , computer science
The heat transfer coefficient for the laminar flow of the coal‐water mixture (CWM) in a round tube was measured in a preheater which included three inner pipes of radii 5 mm and an outer pipe of radius 40 mm and a length of 1.8 m. It was found that the heat transfer coefficient for the CWM could be estimated from a Newtonian correlation within the experimental error. Furthermore, theremal conductivities of CWMs from thirteen kinds of coals have been measured. A simple and accurate method to predict the thermal conductivity of coal is proposed in this study.