Infrared Thermography of Dropwise Evaporative Cooling of a Semiinfinite Solid Subjected to Radiant Heat Input

Dimarzo, M.; Kidder, C. H.; Tartarini, Paolo

doi:10.1080/08916159208946435

Cited by 7 publications

(8 citation statements)

References 14 publications

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“…The results of the model are compared with the experimental findings of diMarzo [6]. The measured and calculated total evaporation times are within less than 10 percent (which is the scatter of the experimental data).…”

Section: Model Validationmentioning

confidence: 87%

“…Two major remarks should be made for the specific case of radiant heat input from above the solid surface: a) the droplet vaporization is due in part to the direct radiant input and b) the droplet shape is greatly affected by direct radiation. These two observations are presented and discussed in detail by diMarzo [6]. The first observation is expected, and the contribution of the direct radiation to the evaporative process will be quantified.…”

Section: Phenomenologymentioning

confidence: 93%

“…The first step is to characterize the specific radiant source. For the data obtained by diMarzo [6], the geometry of the radiant heat source has been described in Fig. 2…”

Section: Direct Radiation In the Liquid Layermentioning

confidence: 99%

“…2, and the reflectivity p, is less than 0.1 for 4 less than 65" and is given by the electromagnetic theory. The direct radiation into the water layer for the geometrical configuration used by diMarzo [6] is shown in Fig. 3.…”

Section: Water Layer Depth (Mm)mentioning

confidence: 99%

“…In an attempt to extend this information to the fire safety field, a set of dropwise evaporative cooling experiments were performed with radiant heat sources from above the solid surface. DiMarzo [6] investigated single droplets behavior while Dawson [7] provided information on multi-droplet arrays.…”

Section: Introductionmentioning

confidence: 99%

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Modelling Of Dropwise Evaporative Cooling On A Semi-infinite Solid Subjected To Radiant Heat Input

White¹,

Tinker²,

Dimarzo³

1994

Fire Safety Science - Proceedings of the Fourth International S

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A model for the prediction of dropwise evaporative cooling over hot solid surfaces is proposed for the case of radiant heat input. A detailed representation of the droplet shape during the transient is provided. The direct radiant contribution to the evaporative process is expressed as a liquid-vapor interfacial term and a constant heat absorption term within the liquid layer. The liquid layer is treated with a onedimensional heat conduction approximation justified by previous results and three submodels are used to describe it during the transient. A boundary element method for the solid thermal behavior, previously developed, is extended to this case. The results obtained from a closed-form solution, with simplified solid-liquid interfacial boundary conditions, are also included. Comparisons with the experimental data illustrate the adequacy of the model and the performance of the closed-form solution.

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Section: Model Validationmentioning

confidence: 87%

Section: Phenomenologymentioning

confidence: 93%

“…The first step is to characterize the specific radiant source. For the data obtained by diMarzo [6], the geometry of the radiant heat source has been described in Fig. 2…”

Section: Direct Radiation In the Liquid Layermentioning

confidence: 99%

Section: Water Layer Depth (Mm)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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