PPSD is designed for engineering complex heat exchangers, e.g. steam boilers, power stations…, etc. Almost all plants like solar, gas, and thermal power plants can be design,ed and more than 60 different elements (heat exchanger, spray cooler, and so on) are available. Devices like attemperator (i.e,. spray cooler), and pressure reducing devices for reducing the temperature of the steam and pressure of the flue gas at any section of the plant isare flexible.I For selecting heat exchangers, selection of matheriale hais a wide range of options, and the other parameters like tube and shell side velocity, pressure drop, area, length are calculated accordingly. Flue gas flows and steam/water flows can be divided up and be combined again, with the possibility of writing a script for efficiency, power output e.t.c