A region in which room air velocity is less than 0.075 m/sec (15 FPM). Stratification boundary: The boundary between room air currents moving faster than 0.075 m/sec (15 FPM) and stratified …
Therefore, the maximum, minimum and minimum reheat flow points are probably critical for acoustical and energy control. Intermediate control is not as sensitive, but excessive swings in flow are to be avoided.
The primary outdoor air fraction is the amount of outdoor air that must be supplied to each breathing zone as a percentage of the minimum expected primary airflow (outdoor air and recirculated air), at design conditions, delivered to the breathing zone. It …
• Minimum primary airflow should be reviewed thoroughly to ensure fuel line and throat velocities are adequate • Hot "K" calibrations should be completed on at least an annual basis • Primary air flow should be accurately measured and controlled to within ±3%.
The table below indicates recommended air carrying velocities in pneumatic solid transport systems. Recommended air velocity for pneumatic transport of products like cement, coal, flour and more.
A region in which room air velocity is less than 0.075 m/sec (15 FPM). Stratification boundary: The boundary between room air currents moving faster than 0.075 m/sec (15 FPM) and stratified zone. Primary air: The air coming directly from the outlet. Secondary air: The room air which is picked up and carried along by the primary air. Total air:
Ensure That Dirty Air Velocity Measurements Are at Optimum Primary Air/Fuel Ratio with a Balance Within 5%. The average velocity for each burner line is determined while the mill is in service. This velocity is then used for collecting an isokinetic coal sample from each line.
The primary air jet is defined as the air delivered to a room through the supply duct plus the entrained room air that lies within an envelope of arbitrary velocity, usually taken as some …
What is the minimum air conveying velocity for a pneumatic conveying system ? In order to transport a solids in dilute phase (coarse solids like pellets or powder), the conveying air must reach a threshold value called the mininum air conveying velocity.
• Minimum primary airflow should be reviewed thoroughly to ensure fuel line and throat velocities are adequate • Hot "K" calibrations should be completed on at least an annual basis • Primary …
Ensure That Dirty Air Velocity Measurements Are at Optimum Primary Air/Fuel Ratio with a Balance Within 5%. The average velocity for each burner line is determined while the mill is in …
To achieve the best possible combustion and NOx, primary air should typically be 15% to 20% of total airflow. Primary air is intended to provide adequate heat to dry the fuel and provide stable pneumatic transport to the burners; it should not be a significant portion of the airflow required …
The primary outdoor air fraction is the amount of outdoor air that must be supplied to each breathing zone as a percentage of the minimum expected primary airflow (outdoor air and …
44 rowsThe table below indicates recommended air carrying velocities in pneumatic solid transport systems. Recommended air velocity for pneumatic transport of products like cement, …
What is the minimum air conveying velocity for a pneumatic conveying system ? In order to transport a solids in dilute phase (coarse solids like pellets or powder), the conveying air must …
The primary air jet is defined as the air delivered to a room through the supply duct plus the entrained room air that lies within an envelope of arbitrary velocity, usually taken as some value between 50 and 150 fpm. The jet discharged from the free opening has four zones of expansion. The centerline velocity of
Therefore, the maximum, minimum and minimum reheat flow points are probably critical for acoustical and energy control. Intermediate control is not as sensitive, but excessive …
• For fan-powered VAV boxes, the primary airflow mini-mum can often be set below the minimum ventilation rate by using transfer air to provide some or all of the ventila-tion requirement …
• For fan-powered VAV boxes, the primary airflow mini-mum can often be set below the minimum ventilation rate by using transfer air to provide some or all of the ventila-tion requirement indirectly, as allowed by Standard 62.1, Appendix A. • Minimum rates are sometimes determined by exhaust makeup air requirement rather than ventilation rates.
To achieve the best possible combustion and NOx, primary air should typically be 15% to 20% of total airflow. Primary air is intended to provide adequate heat to dry the fuel and provide stable pneumatic transport to the burners; it should not be a significant portion of …
