Thermal Performance of Micro-Pulsating Heat Pipe
A Bakhirathan1, R Giridhar2, K D P Pavan Kumar3, Gangadhara Kiran Kumar Lachireddi4
1A Bakhirathan*, Research Scholar Department of Mechanical Engineering, NIT Calicut, Kerala, India.
2Giridhar R, Research Scholar Department of Mechanical Engineering, NIT Calicut, Kerala, India.
3K D P Pavan Kumar, Research Scholar Department of Mechanical Engineering, NIT Calicut, Kerala, India.
4Gangadhara Kiran Kumar L, Assistant Professor Department of Mechanical Engineering, NIT Calicut, Kerala, India.
Manuscript received on July 20, 2019. | Revised Manuscript received on August 10, 2019. | Manuscript published on August 30, 2019. | PP: 2786-2791 | Volume-8 Issue-6, August 2019. | Retrieval Number: F8846088619/2019©BEIESP | DOI: 10.35940/ijeat.F8846.088619
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this study, thermal performance of MPHP is investigated computationally. A case with 0.7mm hydraulic diameter with 7 turns is considered for the study. Simulation is carried out using ANSYS-FLUENT® software by considering water as working fluid with the help of VOF model. Computational study shows the oscillation of fluid inside and formation of new vapor slugs. The heat input is varied from 1.2 W to 4.8 W in the step of 1.2. Flow circulation inside the MPHP is not unidirectional and frequently changes with the pressure disturbance created in the channels. The temperature profile from computational study shows the startup condition is changing with heat input. Thermal resistance of the MPHP decreases with increase in heat input and the corresponding thermal resistance found to be varied from 3.94 to 3.65 K/W.
Keywords: Fill ratio, Micro-Pulsating Heat Pipe, Thermal Management, Thermal Resistance.