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Evaporative Cooling Due to a Gently Deposited Droplet.


pdf icon Evaporative Cooling Due to a Gently Deposited Droplet. (589 K)
diMarzo, M.; Tartarini, P.; Liao, Y.; Evans, D. D.; Baum, H. R.

NIST GCR 96-687; Paper 7; June 1996.

International Journal of Heat and Mass Transfer, Vol. 36, No. 17, 4133-4139, 1993.

Available from:

National Technical Information Service
Order number: PB96-202304

Keywords:

water sprays; evaporation cooling; droplets; equations; formulations; surface temperature; temperature distribution; evacuation time

Abstract:

The transient thermal behavior of a single water droplet gently deposited on the surface of a semi-infinite solid is investigated. A coupled model that solves simultaneously the transient condition equation for the solid and the liquid to yield the surface temperature and heat flux distributions as well as the description of the droplet evaporation transient is proposed. The predictions of the evaporation time are compared with experimental data. An additional model is presented which assumes constant heat flux at the liquid-solid interface. This model provides a closed form solution for the solid surface transient temperature distribution.