EXAMIANS
Fourier's law of heat conduction gives the heat flow for
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In regenerator type heat exchanger, heat transfer takes place by
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Heat transfer by radiation mainly depends upon
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Heat is closely related with
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Depending on the radiating properties, a body will be white when (Where a = absorptivity, p = reflectivity, x = transmissivity)
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Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)
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The heat transfer by conduction through a thick cylinder (Q) is given by (where T₁ = Higher temperature, T₂ = Lower temperature, r₁ = Inside radius, r₂ = Outside radius, l = Length of cylinder, and k = Thermal conductivity)
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The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called
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The product of Reynolds number and Prandtl number is known as
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According to Kirchoff's law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a
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