# Heat Transfer by Convection

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**Formula:** `Q = h * A * ΔT`

Heat transfer by convection occurs when a fluid (liquid or gas) transfers heat between a solid surface and itself. The rate of heat transfer (Q) during convection can be calculated using the formula `Q = h * A * ΔT`

, where ** h** is the heat transfer coefficient measured in watts per square meter per Kelvin (W/m²·K),

**is the surface area through which the heat transfers measured in square meters (m²), and**

*A***is the temperature difference between the surface and the fluid measured in Kelvin (K) or degrees Celsius (°C).**

*ΔT*Understanding convection is essential in various fields such as HVAC (heating, ventilating, and air conditioning) design, automobile engine cooling systems, and estimating heat transfer in environmental contexts.

Tags: Heat Transfer, Convection, Thermodynamics, Fluid Dynamics