Effect of evaporator-condenser diameter ratio (d/D) on thermal performance of the tapering heat pipe with various heat sources

Authors

DOI:

https://doi.org/10.15587/1729-4061.2018.141812

Keywords:

boiling visualization, bubbles formation, tapering heat pipe, evaporator to condenser diameter ratio

Abstract

In the present study, a new tapering heat pipe design had been developed to enhance the thermal performances. Boiling visualization in the tapering heat pipe is investigated to provide the detailed information of bubbles nucleation. Experiment was conducted in the tapering heat pipe with variation of the evaporator (d) to condenser (D) diameter ratio. The values of d/D are varied at 1/1; 1/2; 1/3 and 1/4. Heat load was generated at the evaporator section using heater DC-Power supply at 30, 40 and 50 Watt. The visualization technique was developed by using a transparent glass tube and the images of boiling bubbles were captured by SLR camera. The glass tube inclination is 45° and integrated with the NI-9211 and c-DAQ 9271 module. K-type thermocouple was set at the evaporator and condenser sections for measurement of boiling temperatures in the tapering heat pipe. Based on the results, it can be noted that variations of heat load and diameter ratio (d/D) of the evaporator and condenser affect the size and shape of boiling bubbles, as well as the nucleation temperature on the tapering heat pipe. The heat transfer coefficient tends to increase at a heat load of 50 W and diameter ratio d/D=1/4.

Author Biographies

Sarip Sarip, Ronggolawe Technology High School Jalan. Campus Ronggolawe Blok B/I, Cepu, Indonesia, 58312

Doctoral Student

Department of Mechanical Engineering

Sudjito Soeparman, University of Brawijaya Malang Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145

Professor, Researcher

Department of Mechanical of Engineering

Lilis Yuliati, University of Brawijaya Malang Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145

Doctor of Mechanical Engineering, Researcher

Department of Mechanical of Engineering

Moch. Agus Choiron, University of Brawijaya Malang Jalan. Mayjend Haryono, 167, Malang, Indonesia, 65145

Doctor of Mechanical Engineering, Researcher

Department of Mechanical Engineering

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Published

2018-09-12

How to Cite

Sarip, S., Soeparman, S., Yuliati, L., & Agus Choiron, M. (2018). Effect of evaporator-condenser diameter ratio (d/D) on thermal performance of the tapering heat pipe with various heat sources. Eastern-European Journal of Enterprise Technologies, 5(8 (95), 52–57. https://doi.org/10.15587/1729-4061.2018.141812

Issue

Vol. 5 No. 8 (95) (2018): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2018 Sarip Sarip, Sudjito Soeparman, Lilis Yuliati, Moch. Agus Choiron

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