Choosing Proper Excess Air Coefficient for Direct Fired Heater
The motions of air and water shift energy from the regions of surplus to regions of deficit.
air transmission coefficient
All that remained of the building after the fire was an empty shell.
Study on Anaerobic Digestion by Solid Method with Waste Activated Sludge to Produce Methane;
As this cold air moved through the woods,
a sound wave that is transmitted via air.
cooled by air conditioning.
high efficiency particulate air filter
cold air flows in and replaces it.
high efficiency air filter unit
It had spread across the high valley.
A balloon floated across the sky.
The air is passed through sprays of liquid.
the process of taking in and expelling air during breathing.
A tuning fork transmits sound waves through the air.
Air pressure forces the water through the pipe.
The gaseous weapon residues are then vented through the hollow central portion of the water column.