Is the lumped capacitance method of analysis likely to be mo

Is the lumped capacitance method of analysis likely to be more applicable for a hot
solid being cooled by forced convection in air or in water? By forced convection in air
or natural convection in air?

The Lumped capacitance method is more applicable for forced convection in water thn in air, and is more applicable for forced convection in air than for natural convection in air