Spray Booth Air Flow Test

Testing air flow face velocity.

Spray booth air flow test. Ask the expert question and answer archive. The amount of air flowing into the paint booth must be sufficient to overcome the overspray from the spray gun. What should the airflow be in a semi down draught booth with heated air replacement that is 6 6m long x 4 4m wide x 2 2m high. The spray painting and powder coating code of practice october 2012 states that the plant and equipment used in spray painting or powder coating activities should be inspected at regular intervals and maintained according.

The combined air mix then flows up the exhaust duct. The real issue with air flow in a spray paint booth is having adequate air. The air flow must be measured when the booth is empty during the spray cycle in the area that the spray painting is done. Fans to push and pull the air being pushed in and pulled out are done with two types of fans.

By ron joseph. Less dirt in the paint job faster drying increased production. Proper air flow in a spray booth leads to maximum cash flow. Testing worker exposure to spray paint emissions by sampling the worker operator.

A thermo anemometer with an averaging feature and datalogging is best suited for this type of measurement. In most cases it is necessary to test both air flow and worker exposure to the paint components. Controlling the paint booth air flow going into the booth with relation to the air being exhausted from the booth is critically important to maintain the proper flow of air over the item being painted and remove the over spray effectively. A 14 wide x 9 tall x 26 long spray paint booth will exhaust at least 13 104 cubic feet of air per minute.

A thermo anemometer with a telescopic articulated probe deflecting vane anemometer with a low flow probe rotating vane anemometer or velocity matrix can be used to test spray booths. Running this spray booth for twenty minutes requires 262 080 cubic feet of available air. Calculating air flow rate velocity in a spray booth. Once you have measured the air flow you will want to see what the original design specification for your paint booth airflow was.

Typical paint booth air flow values can be read about here or just remember typically a cross draft paint booth will have air flow of about 100 feet per minute based on the width and height of the booth a downdraft will have air flow of about 50 feet per minute. Harmful dust and dermatitis risk apr 2013.