Abstract

This paper describes the development of an array of coplanar capacitive sensors applied to marine icing. Current atmospheric icing monitoring systems consider single phase conditions in their operation. Marine icing conditions present a unique environment where the liquid water phase effects cannot be neglected and require a novel approach. We have conducted an initial proof of concept and propose a new icing monitoring system which can distinguish between the individual phases. A numerical model confirmed our initial hypothesis of the system’s ability to discriminate the multiphase domains based on the array of geometrically dissimilar capacitive sensors. In addition, we also developed a novel experimental technique based on a comparative study under constant conditions to eliminate the need for an independent ice accretion monitoring system normally required in sensor development. The new approach promises a better characteristic in marine icing monitoring systems or in similar applications where multiphase dielectric is present.

Highlights

  • N EW methodology for monitoring marine icing phenomena in arctic offshore environments is being proposed

  • Marine icing is created by a combination of low air temperatures and water spray and can severely affect ships or offshore platforms [1]

  • The ice layer in marine icing is formed when super-cooled water spray droplets freeze on parts of the structure before the water runoff time elapses [3], [4]

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Summary

Introduction

N EW methodology for monitoring marine icing phenomena in arctic offshore environments is being proposed. Marine icing is created by a combination of low air temperatures and water spray and can severely affect ships or offshore platforms [1]. A number of laboratory derived methods to monitor the icing has been proposed recently such as the systems based on image processing in visible or IR light in [5]–[8]. These are complex systems and require an unobstructed view, artificial ambient lighting, possibly camera vibration damping besides other requirements which makes their deployment in the harsh marine environment challenging and maintenance costly

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