Heat and Temperature

In explaining heat transfer questions, students frequently made mistake of interchangeably by using the terms heat and temperature. Really, there is a dissimilar disparity among the two. The temperature is a measure of the quantity of energy possessed by the molecules of a substance. It is an associative measure of how hot or cold a substance is and can be employed to expect the direction of heat transfer. The symbol for temperature is T. The general scales for measuring temperature are Rankine, Fahrenheit, Celsius, and Kelvin temperature scales.

Heat is the energy in transit. The transfer of energy as heat takes place at the molecular level as an outcome of a temperature difference. The heat is capable of being transmitted via solids and fluids by conduction, via fluids by convection, and via empty space by radiation. The heat is denoted by the symbol Q. The general units for measuring heat are the British thermal unit (Btu) in the English system of units and the calorie in the SI system (International System of Units).