Flue gas flow rate of roller kiln

A temperature system to describe the change of flue gas temperature over time; The atmosphere system can describe the change of flue gas atmosphere over time. What is the effect of stress? Only when there is a pressure difference does the flue gas have power and flow. However, all the heat is reflected on the adobe. The heat exchange of bricks in the furnace is mainly through the radiation heat transfer between the flue gas and the kiln wall, the convection heat transfer between the flue gas and the bricks, and the conduction heat transfer between the rollers and the bricks.
The convective heat transfer in a roller kiln is not only related to the temperature difference between the flue gas and the brick, but also related to the convective heat transfer coefficient between the flue gas and the brick. The main factor determining the convective heat transfer coefficient is the flue gas flow rate, which cannot be measured and has been ignored by engineering and technical personnel and enterprises, which means that they are aware of its relevant importance, but they also bow down because they cannot be detected. In fact, flue gas velocity has practical significance in kiln combustion, and pressure is only a reflection of flue gas velocity.