In building science, how can heat move from one body to another?

In building science, heat transfer can occur through various mechanisms, and radiation is one of the primary methods. Radiation involves heat transfer through electromagnetic waves without requiring a medium, meaning it can occur through empty space. For instance, the sun's heat reaches the earth through radiation, and similarly, heat from a warm surface can radiate toward cooler surfaces nearby.

This process is particularly significant in terms of building performance, as understanding how heat radiates can inform decisions about insulation, window treatments, and overall energy efficiency strategies. Proper management of radiant heat can lead to better thermal comfort within a building and assist in reducing energy consumption for heating and cooling.