Extra air is introduced into the burner to ensure complete combustion. But too much will cause the air to overheat and leak out of the boiler, reducing boiler efficiency and creating security problems. When the boiler is set, its purpose is to maximize combustion efficiency by providing extra air precisely and sufficiently for complete combustion, but not too much to reduce efficiency. How much extra air is needed to burn completely This rate varies in different designs and conditions of boiler and burner and different amounts of burner ignition but is usually between -%. Excess air must also adapt to fluctuations in temperature, density, and humidity of the boiler combustion air during the day and season. It is desirable to keep the amount of excess air constant throughout the ignition range.

Ventilation gas savings provide the best heat recovery opportunity. In boiler chimneys, there is a need for heat exchangers to transfer heat from the flue gas to the return water or to feed the boiler or combustion air. They even work well in boilers and operate at relatively low flue gas temperatures. There is a large room to recover some of the flue gas heat, which rises if the flue is not recovered. Saving gas from the chimney usually increases the overall efficiency of the boiler by to percent.

Je confirme que toutes les operations sous mentionnées ont étés réalisés avec succés. On vous félicite pour la professionnalité et le savoir faire que l’ing. Tarek Ibrahim a montré Durant son séjour à Tunis”.English translation: "I confirm that all the operations mentioned in summers have made successfully. We congratulate you on the professionalism and expertise that Eng. Tarek Ibrahim showed During his stay in Tunis

Natural gas boilers use one of two types of burners, atmospheric burner (natural suction) and compressed air burner (forced air) or electric burner. Nox burners (the type of nitrogen oxides most associated with air pollution) and pre-mix burners (burners where air and gas are mixed before the fan) are commonly used to reduce air loss and stabilize air quality. And even required in some areas. To ensure the usefulness of mixing the air and fuel entering the burner, these types of burners can reduce NOx leakage.

If your building has several boilers, you need to estimate whether you really need to put the boilers in standby mode (at pressure and temperature), as this will waste energy. The stand-by boiler not only interrupts the cycle but also releases heat to the surrounding environment during the loss of radiation, which significantly increases the boiler input power while reducing ignition. Give. At low ignition values, for example, when the boiler is maintained in standby mode, the efficiency drop can reach %. Maintaining the standby state of the boiler will cause a quick recovery in case of failure of the previous boiler, but this action must be measured by the huge and useless consumption of energy. If you do not need a boiler in standby mode in your activity or you only need it in certain seasons, you must turn off all the boilers that you do not need to prevent energy loss.