Modes Of Heat Transfer
This chapter provides a comprehensive overview of heat transfer modes, namely conduction, convection, and radiation, detailing their fundamental principles and governing laws. It exemplifies how these modes apply to everyday thermal equipment and presents the heat balance equation relevant for energy management in thermodynamic processes. The key concepts outlined assist in understanding the fundamental processes of heat transfer in various contexts, such as air conditioning and refrigeration.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Heat transfer occurs through conduction, convection, and radiation, each with unique governing principles.
- Real-world examples illustrate the application of these heat transfer modes in devices like air conditioners and refrigerators.
- The heat balance equation integrates the rate of heat transfer and energy storage principles, aiding in thermal analysis.
Key Concepts
- -- Conduction
- The transfer of heat through a solid or stationary fluid due to a temperature gradient, governed by Fourier’s Law.
- -- Convection
- Heat transfer between a solid surface and a moving fluid, including both natural and forced convection, according to Newton’s Law of Cooling.
- -- Radiation
- The emission of energy as electromagnetic waves that occurs due to temperature differences and does not require a medium, described by the Stefan–Boltzmann Law.
- -- Heat Balance Equation
- An equation representing the rate of heat in, rate of heat out, and heat generated within a system to determine the rate of energy storage.
Additional Learning Materials
Supplementary resources to enhance your learning experience.