It may also affect how well the coating adheres to the target. For very viscous fluids this will have a detrimental effect on coating applications as small droplet sizes help to ensure an even coating. water has a Cp of about 1 at room temperature.Īs the viscosity of a fluid increases, it will tend to form larger droplets when sprayed. This is most commonly redefined as the unit Centipoise (cps) with 1 cps being equivalent to 1 millipascal second, i.e. Viscosity is measured in pascal seconds with water at 20 degrees C having a viscosity of 1.002 mPa.s. It is an approximate measure of the 'thickness' of a liquid. Viscosity is a measure of a fluid's resistance to shear stress. In the food industry there are many viscous fluids that need to be sprayed so clearly this a key concern in this sector. The spraying of viscous fluids can represent some challenges.
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