CFD ANALYSIS ON INTERNAL GROOVED TUBES IN SOLAR WATER HEATER
S. Palanisamy
Assistant Professor, Department of Mechanical Engineering, CARE Group of Institutions, Trichy, Tamilnadu, India.
R. Naveen kumar
Senior Lecturer, Department of Mechanical Engineering, CARE Group of Institutions, Trichy, Tamilnadu, India.
Receiving Date:
2015-09-20
Acceptance Date:
2015-10-19
Publication Date:
2015-11-17
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Abstract
This paper presents computational fluid dynamics studies on friction factor & heat transfer rate of a plain
tube and tube equipped with two types of internal grooves (circular and trapezoidal) in solar water
heater. Tests were performed for Reynolds number ranges from 6000 to 12000 for plain tube and
different geometry inside grooved tubes. The Heat transfer rate were increased with increase of Reynolds
number for the plain tubes, circular grooved tubes and trapezoidal grooved tubes. The maximum increase
of heat transfer rate was obtained from numerical modeling is 22% for circular grooved tube and 28%
for trapezoidal grooved tube when compared to the plain tube of solar water heater.
Keywords:
CFD, Solar water heater, Heat transfer
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