Experimental study on evaporation of pentane from a heated capillary slot

Jasvanth, VS and Ambirajan, Amrit and Arakeri, Jaywant H (2016) Experimental study on evaporation of pentane from a heated capillary slot. In: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 95 . pp. 466-476.

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Abstract

An experimental investigation of evaporation of a pentane meniscus from a heated capillary slot is presented. A novel aspect of this study is that both the wicking height and steady state evaporation mass flow rate are measured simultaneously. Based on a macroscopic force balance, the apparent contact angle of the evaporating meniscus is experimentally estimated from the wicking height and mass flow rate. This is compared with the results obtained using evaporating thin-film theory. The experimentally estimated contact angle is slightly larger than that obtained from the thin-film model but both show similar trends. Further, it is found that the reduction in the meniscus height is primarily due to an increase in the apparent contact angle. The liquid and vapor pressure drops in the capillary are insignificant relative to the capillary pressure. (C) 2015 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Keywords:	Heat pipe; Evaporation; Thin-film
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	01 Apr 2016 04:51
Last Modified:	01 Apr 2016 04:51
URI:	http://eprints.iisc.ac.in/id/eprint/53441

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