Sizing Insect Exclusion Screens For
Greenhouses
Shearin
and Baker developed the following computer program* for sizing insect exclusion
screens for greenhouses. This is a DOS-based program and is compatible with
machines running Windows 95/98/2000/XP. For more information about retrofitting
a greenhouse, see Information
Note #104.
Before you begin, you will need to know...
- the greenhouse static pressure drop you measured
with your manometer with all doors closed and fans running (see Note
#104 if necessary)
- the airflow CFM for your fans (If you wish
to see the list of airflow (CFM) data for most commercially available greenhouse
fans, click here.)
- the size of the ventilation window or evaporative
cooling pads
- the square foot area of the greenhouse
Directions:
- Download the Screening
Program by clicking here. DOWNLOAD (40K)
- Enter the static pressure drop of the greenhouse
that you measured with your manometer.
- Enter total CFM for all fans in the greenhouse.
- Next, enter the size of the ventilation window
or evaporative cooling pads.
- Last, enter the area of the greenhouse floor.
Finally, the program presents a list of 29 screening
fabrics and the size of the screen that will provide adequate ventilation for
each material.
* This program is
copyrighted © 2001 E. Shearin and NCSU. It may be freely downloaded for
personal or educational use only.
Last web update Aug. 2003