Radiant Heat Transfer and SPF
So many terms to learn and think of and run through your head, we know! You finally know what convection heat transfer is and you keep reading about other heat transfer and you are probably wondering why it matters. Trust us, it matters to know because when you know what performance you are getting you are satisfied and sure of what you are doing. Especially when making such a huge move in insulating your home.
When electromagnetic waves travel through space, we call it radiation. When electromagnetic waves come in contact with an object, then these waves transfer that heat to the object. Electromagnetic waves travel through empty space and the sun warms the earth through radiation through those electromagnetic waves. This helps us understand what radiant heat transfer is exactly.
This radiative heat transfer does not need the objects to in direct contact with the heat source and this occurs as mentioned above, through empty space. Let’s think of an example, imagine yourself in a room, it is 75°F inside yet the walls and ceiling are at 49°F. How would you feel? Pretty cold inside wouldn’t you agree? Now imagine the opposite scenario; same temperature inside 75°F but now those walls are around 85°F, how do you feel now? Probably really hot in there. As you notices, the starting air temperature was the exact same in both cases: 75°F, yet
the radiative cooling and warming of your body to the walls and ceiling temperature made a major impact on the comfort level you may of felt.
What does this have to do with spray foam insulation you may be wondering? That spray foam insulation is the best option for you, your home and comfort because heat transfer by radiation is blocked and stopped completely with this insulation method thanks to its magnificent cell structure. Although the heat can transfer by radiation across these cells, thanks to the adjoining cell walls within that are pretty much the same temperature, heat transfer by radiation is pretty much cancelled out and does not exist at all. Another great benefit of this insulating method is that the interior sides of walls that are insulated, are almost the same temperature and the ones in the room so that radiant heat loss or gain is small making your home much more comfortable. This definitely makes the investment worthwhile don’t you say?