The kitchen gas studio has an exhaust hood, so the ventilation capacity of the exhaust hood is relatively large. When using gas, the exhaust hood is exhausting smoke, so there is no need to consider the ventilation of the furnace room. Only pay attention to the kitchen exhaust pipe to be sealed, to prevent poisoning during non working hours. The horizontal end of the kitchen smoke exhaust pipe should not be too long. Generally, the horizontal distance is more than 15m, and the slope is greater than 2%. The horizontal end should be installed with a movable joint to facilitate oil cleaning. Jinan smoke hood reminds everyone that the exhaust speed is less than 10 meters per second, and the wind speed is too low. It is necessary to prevent the oil from adhering to the smoke pole. The branch connecting the exhaust port should be installed with air volume regulating valve.
Due to the limitation of natural conditions, natural wind has variability, and the installation of fire smoke exhaust pipe is an uncontrollable factor. But the actual situation is certainly that the hot pressure ventilation and the wind pressure ventilation work at the same time, and the actual situation is better than that of only discussing the hot pressure ventilation.
Jinan smoke exhaust pipe to ensure smooth and sufficient natural ventilation, the condition is to have enough large area of air inlet and outlet, and reasonable layout of air inlet and outlet, and reasonable design of air inlet and outlet area.
The air change frequency is to make the air flow in the workshop reach a certain flow rate. Under the condition of only discussing the hot pressure ventilation, the waste heat generated by the production activities in the workshop can be considered as unchanged in a certain period, and the temperature change of the gas body is consistent within a small range.
Jinan exhaust hood
Under the condition that the waste heat generated remains unchanged, the physical characteristics of the air remain unchanged, and the area of the inlet and outlet is reasonable, it can be concluded that the lower the external temperature is, the higher the air flow velocity in the workshop will be, that is, under the same conditions, the lower the external temperature, the more air changes in the plant will be.