Thermodynamics is fundamentally concerned with heat transfer, energy transfer, and the conversion between heat and work, and is also applied to describe the phase change of a substance, such as condensation and evaporation .1.1 Determination of Steam QualitySaturated water is water in the condition in which any amount of energy introduced into the water or absorbed by the water can cause the formation of a two-phase mixture of water and steam. In this case the latent heat, evaporation enthalpy, is defined as the energy needed to transform water into steam. Steam quality refers to the weight percentage of steam in a mixture of steam and water, i.e. dry saturated steam contains no water. (Babcock & Wilcox Co., 2007). Saturated steam, which is steam in equilibrium with water, can only come out at specific pressure and corresponding temperature. If changes are made in temperature and pressure, steam conditions will be affected. For example, if you decrease the temperature or increase the pressure, a quantity of vapor will condense and thus wet vapor will be formed. Otherwise, a large pressure drop can turn saturated steam into superheated steam. The relationship between water and steam can be found from the temperature-entropy diagram. From the TS diagram it can be understood that the steam-water mixture condition is halfway between that of saturated water and that of saturated steam. If any change in pressure or temperature of the water-steam mixture can cause the mixture to be saturated water or saturated steam. Obviously, when there is an amount of moisture present in the steam, this will contribute to the energy consumed or heat used which raises the temperature temperature of the moisture to that of the steam. (Babcock & Wilcox Co., ...... middle of paper ......be moved by the difference in density of the air. In this case, the convection is called natural convection. The rate of heat transfer of the forced convection is substantially higher than that of natural convection. This causes the surface temperature in forced convection to be lower than that of natural convection. As mentioned above, heat transfer due to radiation is different from convection as well as from Heat transfer due to radiation can be considered as the result of changes in the electronic configurations of atoms or molecules (Cengel, 2007) due to the fact that heat transfer due to radiation does not require the presence of means of passage or transfer of the heat, is faster than heat transfer due to convection For example, in the experiment, heat transfer due to radiation occurred in both part 1 and part 2.