On the thermal rectification factor in steady heat conduction. (September 2016)

• Record Type: Journal Article
• Authors: Sadat, Hamou; Le Dez, Vital
• Is Part Of: Mechanics research communications. Volume 76(2016:Sep.)
• Page Start: 48
• Page End: 50
• Publication Date: 2016-09
• Subjects: Rectification factor -- Thermal diode -- Heat conduction; Mechanics, Applied -- Periodicals; Mécanique appliquée -- Périodiques; Mechanics, Applied; Periodicals; 530
• DOI: 10.1016/j.mechrescom.2016.07.005
• Languages: English
• ISSNs: 0093-6413

Abstract

Highlights: Thermal diode effect can occur in bilayer conductive walls at steady state. Expression of the rectification factor is given for spherical, cylindrical and slab geometries. Maximum rectification factor is found to be equal to the golden ratio. Abstract: Thermal rectification in heat conduction problems has been extensively studied in planar slabs. Here we consider the rectification problem in planar, cylindrical and spherical geometries involving two layers one of which has a temperature variable heat conductivity. The rectification factor is analytically calculated. It is shown that a maximum theoretical value of 1.618 is obtained.