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Journal of Enhanced Heat Transfer
Fator do impacto: 0.562 FI de cinco anos: 0.605 SJR: 0.211 SNIP: 0.361 CiteScore™: 0.33

ISSN Imprimir: 1065-5131
ISSN On-line: 1026-5511

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.2017013393
pages 299-314

EFFECT OF SURFACE VIBRATION ON BOILING HEAT TRANSFER FROM A COPPER FLAT CIRCULAR DISC

Alangar Sathyabhama
Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India-575025
Prashanth Soundra Pandiyan
Department of Mechanical Engineering, NITK Surathkal, Srinivasnagar Post, Mangalore-575 025 Karnataka, India

RESUMO

This paper presents the experimental investigation of the effect of surface vibration on pool boiling heat transfer from a copper flat circular surface immersed in saturated water at atmospheric pressure. The forced vertical vibrations were induced on this copper test surface with the help of a mechanical vibrator. The frequency was varied in the range 0–25 Hz and the amplitude of vibration was varied in the range 0–5 mm. The results indicate that the heat transfer coefficient increases at low frequency and amplitudes; at higher amplitude and frequency, heat transfer deteriorates in the investigated range. Rohsenow-type correlation was developed, which predicts the present experimental data with an average absolute error of 30%.


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