1986 - Volume #10, Issue #6, Page #28[ Sample Stories From This Issue | List of All Stories In This Issue | Print this story | Read this issue]
Computer Ventilation is First of its KindA state-of-the-art ventilation system that automatically monitors and regulates temperature, humidity, ammonia levels and even dust recently completed successful tests on Midwest confinement operations.
Developed by Pals, Willmar, Minn., the first-of-its-kind total ventilation system makes use of computerized electronic controls and newly developed sensors to keep-air clean and dry inside barns. The programmable controls can be retrofitted to existing buildings, or installed, with a new natural ventilation system also developed by Pals, in new buildings.
"Every aspect of the environment can be controlled to produce healthier animals," says Ray Norling, Pals manager, who says the system has already been installed or ordered for use in 150 hog and poultry barns. "It eliminates the need to constantly adjust and override controls and lets you scientifically use light and temperature to promote faster gain."
To regulate temperature and humidity, controls automatically adjust fans and heat. Lighting can also be tied into temperature controls. For example, Norling recommends programming the system to turn the temperature down 5? during waking hours to stimulate feeding activity and then raise it again when the lights go out to conserve animal energy.
When the system's sensor says ammonia levels have risen to unacceptable levels, the system automatically increases ventilation.
The Pals system is also the first to control dust. Although the company's dust sensor, which can actually monitor dust levels in the air, is not yet in production, the system is programmed to reduce dust levels by turning on all fans 10 min. after animals first get active in the morning and again when lights go out, in order to reduce dust at the most active times. The system can be set to keep dust levels down all day by ventilating or automatically sprinkling with water at regular intervals.
Pals can custom-tailor the controls to regulate any aspect of the environment. Norling says the system works particularly well with the company's new state-of-the-art natural ventilation system that eliminates the need for fans, using air-powered cylinders to automatically open and close wall and roof vents.
"Its hard to believe the difference when you enter a barn with totally clean, naturally vented air. Animals look healthier and have less disease," says Norling. A 300-ft. barn might be equipped with 3 sets of sensors, depending on the design of the barn and how precisely you want to control it. All controls are tightly sealed to resist corrosion, according to the company.
For more information, contact: FARM SHOW Followup, Pals, P.O. Box 753, Willmar, Minn. 56201 (ph toll-free 800 328-8842 or 612 235-8063).
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