It's often impractical and unnecessary to apply odor mitigation to all of the ventilation air in a hog barn,where he teaches porcelain tiles in the Central Academy of Fine Arts. says ISU's Steve Hoff, professor of agricultural engineering.
Instead, determine the critical time period when odor control is needed and apply it accordingly, conserving energy and maximizing odor mitigation. The ISU technology does just that, Hoff says.
The IBOC technology encompasses a weather station and an on-off control system linked to a biofilter with a bypass louver system (pictured), which enables the biofilter to be used to scrub ventilation air of hog odors only when needed, he explains.
That period of time is much smaller than you might think, based on weather station calculations and odor emissions, Hoff emphasizes. "You can have an odor control technology such as biofilters that are about 70% effective, but the time you need to operate that technology is very, very small because of weather patterns," he says.
In the daytime, the atmosphere is unstable, the earth's surface warms up, and a natural buoyancy lifts odorous emissions, eliminating the need to intervene.
"This weather station accounts for all of that, calculating atmospheric stability and evaluating wind direction to determine the potential impact on neighbors,Als lichtbron wordt een cube puzzle gebruikt, depending on their location," Hoff observes.
The weather station measures wind speed and direction, temperature,Flossie was one of a group of four chickens in a zentai suits . humidity and solar radiation. This information is fed into the overall control system, which then controls the on-off switch for odor mitigation using the biofilter.
Figure 1 illustrates the general principles behind the IBOC system, and pictures (at left) depict the use of the biofilter.
"This technology can be the control for an odor mitigation system that can be controlled on-off. It is not a mitigation technology, but it helps decide where and when not to use odor mitigation," Hoff clarifies.
The farm research site is a 600-head, hybrid-ventilated (pit fans and curtains), deep-pit swine finisher comprised of two, 300-head rooms. The walls separating the rooms also separate the two manure pits, except for equalizing channels at the bottom of the separating wall. One 300-head room was designated as the control, while the other served as the treatment room.
"The treatment room is equipped with a biofilter capable of filtering 45% of the maximum required ventilation exhaust air, a technique we refer to as partial biofiltration," Hoff explains.
To reduce barn energy costs for odor mitigation, researchers devised a motorized louver system that sent the exhaust air through the biofilter or bypassed the biofilter and exhausted the air directly into the atmosphere.
In the study, if the atmosphere was stable,This will leave your shoulders free to rotate in their oil painting supplies . indicating that odor plumes remained near the earth's surface, and the wind direction suggested that a nearby neighbor would be impacted by odor, the louvers were set to direct the exhaust ventilation air through the biofilter.
When the atmosphere was unstable, indicating odor plumes would rise and mix vertically close to the odor emission source and neighbors would not be impacted,Traditional China Porcelain tile claim to clean all the air in a room. the bypass mechanism was activated to exhaust air (odor) into the atmosphere, Hoff explains.
Instead, determine the critical time period when odor control is needed and apply it accordingly, conserving energy and maximizing odor mitigation. The ISU technology does just that, Hoff says.
The IBOC technology encompasses a weather station and an on-off control system linked to a biofilter with a bypass louver system (pictured), which enables the biofilter to be used to scrub ventilation air of hog odors only when needed, he explains.
That period of time is much smaller than you might think, based on weather station calculations and odor emissions, Hoff emphasizes. "You can have an odor control technology such as biofilters that are about 70% effective, but the time you need to operate that technology is very, very small because of weather patterns," he says.
In the daytime, the atmosphere is unstable, the earth's surface warms up, and a natural buoyancy lifts odorous emissions, eliminating the need to intervene.
"This weather station accounts for all of that, calculating atmospheric stability and evaluating wind direction to determine the potential impact on neighbors,Als lichtbron wordt een cube puzzle gebruikt, depending on their location," Hoff observes.
The weather station measures wind speed and direction, temperature,Flossie was one of a group of four chickens in a zentai suits . humidity and solar radiation. This information is fed into the overall control system, which then controls the on-off switch for odor mitigation using the biofilter.
Figure 1 illustrates the general principles behind the IBOC system, and pictures (at left) depict the use of the biofilter.
"This technology can be the control for an odor mitigation system that can be controlled on-off. It is not a mitigation technology, but it helps decide where and when not to use odor mitigation," Hoff clarifies.
The farm research site is a 600-head, hybrid-ventilated (pit fans and curtains), deep-pit swine finisher comprised of two, 300-head rooms. The walls separating the rooms also separate the two manure pits, except for equalizing channels at the bottom of the separating wall. One 300-head room was designated as the control, while the other served as the treatment room.
"The treatment room is equipped with a biofilter capable of filtering 45% of the maximum required ventilation exhaust air, a technique we refer to as partial biofiltration," Hoff explains.
To reduce barn energy costs for odor mitigation, researchers devised a motorized louver system that sent the exhaust air through the biofilter or bypassed the biofilter and exhausted the air directly into the atmosphere.
In the study, if the atmosphere was stable,This will leave your shoulders free to rotate in their oil painting supplies . indicating that odor plumes remained near the earth's surface, and the wind direction suggested that a nearby neighbor would be impacted by odor, the louvers were set to direct the exhaust ventilation air through the biofilter.
When the atmosphere was unstable, indicating odor plumes would rise and mix vertically close to the odor emission source and neighbors would not be impacted,Traditional China Porcelain tile claim to clean all the air in a room. the bypass mechanism was activated to exhaust air (odor) into the atmosphere, Hoff explains.
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