radiation
Energy is transferred through space by radiation.
radiation
radiation
Radiation
If you are asking about a box filled with a gas, then heat transfer can modeled as conduction through a solid. The requirement would have to be no fluid flow (obviously there is movement at the micro level), and the conductive heat transfer coefficient would be very low.Convection heat transfer is dependent on that conductive heat transfer coefficient of the liquid and is based on something called the Nusselt number.If you are asking about heat transfer through a completely void space, then heat would travel by means of radiation.
Energy is transferred through space by radiation.
radiation
radiation
radiation
Radiation
radiation
If you are asking about a box filled with a gas, then heat transfer can modeled as conduction through a solid. The requirement would have to be no fluid flow (obviously there is movement at the micro level), and the conductive heat transfer coefficient would be very low.Convection heat transfer is dependent on that conductive heat transfer coefficient of the liquid and is based on something called the Nusselt number.If you are asking about heat transfer through a completely void space, then heat would travel by means of radiation.
Void means empty.
What fraction of the soil volume is void space
Void space is an empty compartment not used for cargo or ballast purpose.
Void ratio is defined as the ratio of the volume of the void space compared to the volume of the solid particles.
it has to do with space and astronomy