ARRANGEMENT FOR PRESETING THE COMBUSTION AIR FOR STEAM BOILERS

摘要

Arrangement for preheating the combustion air for steam boilers by means of calorifiers. The task is to erwaermen when starting a boiler only the amount of air required for this with high temperature and preheat the combustion air during normal operation with only a slight pressure drop through the calorific and their low pollution. This is achieved in that between the fan and the Luftvorwaermer a bypass channel is provided to the air duct, in the bypass channel, the Kaloriferen are used in the Abstroemteil the bypass channel after the Kaloriferen and in the Luftabstroemkanal after Luftvorwaermer a bypass channel is involved and in the air duct in height of the Kaloriferen a butterfly valve and in the Abstroemteil to the integration of the bypass channel a pendulum flap are arranged. figure