Important formulas of transmission of heat chapter

Sure! Here are some important formulas related to the transmission of heat:

1. Conduction:

   • Fourier's Law of Heat Conduction: q = -kA(dT/dx)
     • q: heat transfer rate
     • k: thermal conductivity of the material
     • A: cross-sectional area through which heat is transferred
     • dT/dx: temperature gradient across the material

2. Convection:

   • Newton's Law of Cooling: q = hA(Ts - T∞)
     • q: heat transfer rate
     • h: convective heat transfer coefficient
     • A: surface area through which heat is transferred
     • Ts: surface temperature
     • T∞: surrounding fluid temperature

3. Radiation:

   • Stefan-Boltzmann Law: q = εσA(T^4 - T∞^4)
     • q: heat transfer rate
     • ε: emissivity of the surface
     • σ: Stefan-Boltzmann constant
     • A: surface area through which heat is transferred
     • T: absolute temperature of the surface
     • T∞: absolute temperature of the surroundings

These formulas are commonly used in the study of heat transfer and can help calculate heat transfer rates and temperatures in various scenarios.