Heat Transfer Concepts

   Thursday, August 13, 2020   

Heat Transfer Concepts include all Definitions, Laws, Diagrams, Rules, Examples, Results etc.

Page 1

Conductors and insulators | Conduction | Thermal conductivity | Coefficient of thermal conductivity | Coefficient of thermal conductivity | Proportionality of rate of heat transfer and temperature gradient at steady state | Heat flow in series conductors | Series thermal resistance | Heat flow in parallel conductors | Parallel thermal resistance

Page 2

Thermal resistance for a given arrangement | Searle's cone method | Searle's method in calculation of thermal conductivity | Wiedemann Franz law | Uses of good conductors | Experimental verification of air as a bad conductor of heat | Radiation from Black and White Surfaces | Woolen Clothes Keeps People Warm in Winter

Page 3

Heat transferred by conduction is a function of temperature | Using conduction in first law of thermodynamics | Application of conduction in phase change | Analogy of current flow with heat flow | Simple Problems Based on Heat | Thermal resistance | Thermal resistance of a spherical conductor | Thermal resistance of a cylindrical conductor

Page 4

Thermal resistance of a continuous body with varying cross-sectional area | Good and Bad conductors of heat | Heat conduction using Kinetic model | Convection | Uses of convection | Direction of heat flow | Heat insulation in a house | Radiation | Properties of thermal radiation

Page 5

Prevost theory of exchange | Planck's law of radiation | Athermanous and diathermanous substances | Good absorbers are good emitters | Coefficient of reflection | Transmission coefficient | Relation between absorption,reflection and transmission | Emissive Power | Emissivity | Absorptive power

Page 6

Spectral absorptive power | Perfectly black body | Ferry's black body | Energy emitted per unit time by a body | thermal energy lost per unit time due to radiation | Intensity at a finite distance from the source | The construction and working of Angstrom pyrheliometer | Coefficient of absorption | Modes of heat transfer | Kirchoff's Law of Radiation

Page 7

Problems using Kirchoff's Law | Heat detection devices | Spectrum of blackbody radiation vs wavelength at different temperatures | Wien's displacement Law | Stefan Boltzmann law | Solar constant | Black surfaces are good absorbers of heat | Applications of black and white surfaces

Page 8

Thermos flask | Newton's Law of cooling from Stefan Boltzmann Law | Experimental verification of Newton's Law of cooling | Newton's Law of Cooling | Assumptions of Newton's Law of Cooling | Plot of temperature vs time for Newton's Law of cooling | Plot of log of temperature difference vs time for Newton's Law of cooling | Describe the limitations of Newton's Law of Cooling

Page 9

Problems using Newton's Law of cooling | Example of newton's law of cooling in phase change | Regelation | Factors affecting melting point | Effect of pressure on melting point | Effect of impurities on melting point | Humidity, dew point and fog | calculation of Relative Humidity | Relative Humidity | Effect of pressure on boiling point

Page 10

Effect of impurities on boiling point | Crystallization and its examples | Specific latent heat | Latent heat of fusion | Latent heat of vaporisation | Heating curve of ice | Specific latent heat of some substances | High specific latent heat of fusion of ice | Specific latent heat of vaporization of water | Heating(solid to liquid) and cooling(liquid to solid) curve for naphthalene

Page 11

Difference between Boiling and Evaporation | Factors affecting rate of vaporisation | Applications of evaporation | Melting point and normal melting point | Define freezing point | Melting | Vaporisation and condensation | Evaporation v/s Vaporisation | Sublimation | Describe everyday phenomena based on high latent heat of fusion of ice

Page 12

Setup for measurement of latent heat of fusion | Measurement of specific latent heat of ice | Advantages of high specific heat capacity of water | Change of state | Variation of temperature with time during phase change of a material | Boiling point and normal boiling point | Factors affecting boiling point | Experimentally define boiling point of water | Boiling point and melting point of different substances | Experimentally define melting point of ice

Page 13

Latent heat of fusion in calorimetric experiment | Mixing of two bodies in same state | Mixing of two bodies in different states | Principle of calorimetry | Heat capacity equation | Describe the principle of method of mixtures | Heat lost to surroundings | Heat transfer using principle of calorimetry | Setup for measurement of latent heat of vaporization | Experimental verififcation of water as a bad conductor of heat | Regnault's apparatus | Experimental measurement of specific heat capacity