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The study of heat transfer is rooted in the laws of thermodynamics, which provide a fundamental framework for understanding energy transfer. The first law of thermodynamics, also known as the law of energy conservation, states that energy cannot be created or destroyed, only converted from one form to another. The second law of thermodynamics, which describes the direction of spontaneous energy transfer, is particularly relevant to the study of heat transfer. This law states that the total entropy of a closed system will always increase over time, which implies that heat will always flow from a region of higher temperature to a region of lower temperature.