What is the use of Desuperheater in superheater?? The Basic use of a desuperheater is to minimize the temperature of superheated steam or other vapors. This temperature deduction is accomplished gives the process vapor being brought into direct contact with another liquid such as water. A superheater is a device works fot convertion of saturated steam or wet steam into superheated steam or dry steam. Superheated steam is prepared in steam turbines for the purpose of electricity generation, steam engines, and in processes called steam reforming. There are basics three types of superheaters: radiant, convection, and separately fired. A superheater can be differs in size from a few tens of feet to several hundred feet (a few metres to some hundred metres). Basic Desuperheation Theory Superheated steam has very good and useful advantages on the given applications, for example, when used in power stations to drive turbines. For the use on heating applications , the steam is desuperheated compalsary. This tutorial considers basic desuperheating theory and calculations. Superheated steam is steam that is at a temperature higher than the saturation temperature for the steam pressure. The extra heat results in steam which: Is higher than saturation temperature. Contains more energy than saturated steam. Has a greater specific volume than saturated steam. http://www.maniks.com/desuperheater.html The relationships between these three properties are well documented and can be found in most texts relating to the thermodynamic properties of steam. Advantages of superheating 1.Wet steam within a turbine would result in water droplets and erosion of the turbine blades, as well as increased friction. 2.Higher pipeline velocities (up to 100 m/s) can be used.
That is nothing But the smaller
distribution pipelines can be used. 3.For continuously running plants, superheated steam means no condensation in the pipework, therefore, there is only a requirement for steam trapping during start-up.