Bejan's Law

Bejan's Law describes how heat transfer in a fluid (like air or water) improves as the fluid flows faster. Essentially, increasing the flow speed reduces the resistance to heat movement, making cooling or heating more efficient. For example, in a radiator, pushing air more quickly over the surface helps carry away more heat. Bejan's Law quantifies this relationship, showing that the rate of heat transfer is directly related to the flow velocity. It highlights the importance of flow dynamics in optimizing thermal systems, ensuring they operate more effectively by adjusting flow rates.