TECHNICAL TERMS OF HEAT TRANSFER AND THERMODYNAMICS EXPLAINED !!

1.)ENTHALPY – Name given to the total heat in the fluid at any temperature.

2.)EXTRINSIC PROPERTIES– Also called extensive properties, are those properties which are dependent on the mass of the system. Examples are volume, weight and total energy.

3.)FACTOR OF EVAPORATION – A quantity which when multiplied by the amount of steam generated at a given pressure from water at a given temperature, gives the equivalent evaporation from and at 100°C.

4.)FREE EXPANSION– is a process wherein a fluid from a pressure chamber expands into a vacuum chamber through an orifice of large dimensions.

5.)GAUGE PRESSURE – Pressure above or below atmospheric pressure.

6.)HEAT SINK – A means for disposing of unwanted heat, usually by using it to increase the temperature of water, which is then run to waste.

7.)HEAT SOURCE – Supplier of heat to the working agent of a heat engine-a fraction of the heat supplied being changed into work.

8.)HYPERBOLIC PROCESS– is one in which a gas is heated in such a way that at any instant its pressure multiplied by its volume remains constant.

9.)IDEAL GAS– is one which will obey all the gas laws, under all conditions of temperature and pressure. For an ideal gas, the internal energy and enthalpy are functions of temperature alone.

10.)INTERNAL ENERGY – is the energy arising from the motion and from configuration of the internal particles (atoms and molecules). It is the energy stored in the gas and is used for raising its temperature.