Air Preheater

We are offering air preheater is basically heat transfer equipment to heat air before another process. These types of air-pre-heaters find application in papers mills, sugar mills and in power plants.
The primary objective of using an air preheater is to increase the thermal efficiency of the process.
One of the purposes of the air pre heater is to recover the heat from the boilerfurnace flue gas, which increases the thermal efficiency of the boilerfurnace by reducing the useful heat lost in the flue gas.
fresh air enters from topside vertically on one end & passes down through a number of tubes. It collects at the bottom in a chamber from where it again rises up vertically before exiting the preheater. The numbers of tubes are used to increase the surface area of contact between flue gases & fresh air & to enable better & more even heat transfer.
As a consequence, the flue gases are also sent to the flue gas stack (or chimney) at a lower temperature, allowing simplified design of the ducting and the flue gas stack.
Most of the industries allow flue gases to escape at a temperature of 600-900 deg. C allowing significant percentage of fuel between 35-50% input as wastage to the atmosphere.
Preheating of combustion air is the most commonly used method of waste heat recovery in almost all types of furnaces. Care has to be taken that the preheated air ranges between 250-500 deg. C depending on what the burners can withstand.
The l.a.p. Type burners fitted on most of the furnaces have a limitation of preheated air temperature of 250 deg. C.
We are also one of the well known manufacturers of air preheater.