Exergy analysis of geometrically modified thermosyphon

• Main Authors: Mohanraj, C., Kumar, K. Tarun, Subal, T., Kumar, V. Praveen, Antony, Arockiaraj Godwin, Sridharan, Mohan
• Format: Conference Proceeding
• Language: English
• Subjects: Capacitors; Coefficient of variation; Coils; Convergence; Copper; Copper converters; Deionization; Evaporators; Exergy; Heat transfer; Heat transfer coefficients; Horizontal orientation; Inclination angle; Pressure drop; Thermal resistance; Thermosyphons; Wall temperature
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0181032

In this research article, a modified non-uniform adiabatic section a Two-Phase Closed Thermosiphon (TPCT) is proposed where the uniform section was replaced by convergent and divergent (C-D) sections. The deionized water (DI) is filled in both the TPCTs. Further, the heat transfer performance was carried out for three different orientations, such as 0°, 45° and 90°, and heat input was varied from 50 to 250 W. The effect of these geometrical changes and inclination angles on the heat transfer performance of both the TPCT were evaluated to compare the thermal resistance, wall temperature variation and heat transfer coefficient. By introducing the convergent-divergent section nearer to the condenser, the pressure before and after the C-D section was increased and decreased. This enhances the heat transfer in the evaporator about to a percentage at horizontal and 45° orientation, respectively. The thermal resistance of NUAS TPCT was reduced by up to 4.5% relative to UAS TPCT in horizontal and 45°. Several factors such as gravity assistance, fluid accumulation, pressure drop and thermal resistance exert an influence on the heat transfer performance of the proposed NUAS TPCT at various orientation angles. However, different type of cross-sectional variations subjected to orientation changes may also get influenced by several other parameters that in turn affect the heat transfer performance distinctly. Actually a copper coil is rolled over the Two-Phased Closed Thermosiphon (TPCT) which is included with convergent and divergent section. Current (50v, 100v, 150v,200v,250v) is passed through this copper coil to convert electrical energy to heat energy making the flowing fluid (Deionized water (DI)) heat. Our work in this project is to find the amount of energy consumed and amount of energy loss from the input energy by solving in a theoretical way.