1. Design of the DO/FO Oil or LPG/CNG/Biogas Fired Hot Air Generator:
The oil and gas fired hot air generator system consists of the following components:
1.1. Oil and gas burner supplying heat to the hot air generator, imported from Germany, Italy or Japan. The burner operates fully automatically according to the hot air outlet temperature.
1.2. Combustion chamber and heater body: made of stainless steel, steel tubes and high-temperature-resistant plates. The combustion chamber and heater body are integrated into a single unit, making maximum use of the heat from the fuel in the most compact design.
1.3. Process air fan and air ducts: supply air into the heater body to be heated, then deliver it to the hot air consuming equipment.
1.4. Induced draft fan and stack: draw the flue gas from the combustion chamber and discharge it to the atmosphere. The induced draft fan creates negative pressure in the heater body, preventing flue gas from leaking into the hot air.
1.5. Control system: equipped with highly sensitive temperature sensors that directly control the burner to change or maintain the hot air outlet temperature at the set point.
2. Operating Principle of the Hot Air Generator:
Low-temperature air is blown into the hot air generator by the fan. There, the air absorbs heat from the fuel combustion products in the combustion chamber through the heat exchange walls (indirect heat exchange). The heated air is then delivered to the heat consuming equipment through the hot air ducts.
3. Advantages of the Hot Air Generator:
3.1. Much lower equipment cost than using a steam boiler or thermal oil heater to supply heat.
3.2. Simple operation and the lowest maintenance costs.
3.3. Supplies hot air at very high temperatures, up to 300 °C or higher.
3.4. High level of safety, as it is not a pressure vessel.