Design Of Closed Control Loop For Boiler Air Flow System using Embedded system

Abstract : Present industry is increasingly shifting towards automation. Two principle components of today’s industrial automations are programmable controllers and robots. In this frame work, it is required to optimize the boiler efficiency which in turn helps to generate maximum amount of power in an optimized environment This project work proposes a prototype of closed loop air damper control method used where the oxygen supply can be controlled with the help of actuator, microcontroller through simulation. The main function of the boiler is to generate steam at desire pressure and desired steam generation rate in boiler system; fan is the major role for outside power supplies like coal, air, Oxygen to the furnace.

 EXISTING SYSTEM :

 Microcontroller is a general purpose device, which integrates a number of the components of a microprocessor system on to single chip. It has inbuilt CPU, memory and peripherals to make it as a mini computer. Microcontrollers are: ? Smaller in size ? Consumes less power ? Inexpensive Micro controller is a stand-alone unit,which can perform functions on its own without any requirement for additional hardware like I / O ports and external memory

 DISADVANTAGE :

 ? Does not give clues to the operator as to why efficiency of system is lower ? Does not calculate various losses accountable for various efficiency levels

 PROPOSED SYSTEM :

 The PIC start plus development system from microchip technology provides the product development engineer with a highly flexible low cost microcontroller design tool set for all microchip PIC micro devices. The picstart plus development system includes PIC start plus development programmer and mplab ide. The PIC start plus programmer gives the product developer ability to program user software in to any of the supported microcontrollers. The PIC start plus software running under mplab provides for full interactive control over the programmer.

 ADVANTAGE :

 The performance parameters of boilers, like efficiency and evaporation ratio reduces with time due to poor combustion, heat transfer surface fouling and poor operation Even for a new boiler, reasons such deteriorating fuel quality, water quality etc. can result in poor boiler performance. Boiler efficiency tests help us to find out the deviation of boiler efficiency and target problem area for corrective action.