Brian C. Krafthefer

Filtration as a method for air quality control in occupied spaces

Filtration, or removal control, is one of three methods currently available to provide acceptable indoor air quality in occupied spaces. While the other two methods, source and dilution control, are primarily employed foroccupant needs, filtration has conventionally been used for protection of components within the heating, ventilating, and air conditioning systems. In this paper, filtration technology is reviewed with respect to current ventilation standards for occupants. The difference between ventilation and air quality control is discussed in terms of acceptability criteria and control methods. Parameters that relate these terms are identified and control strategies are proposed that can be used to optimize removal and dilution methods for occupant acceptability and cost-effectiveness.

Honeywell's organic air vehicle chemical-biological sensing platform

Unmanned air vehicles (UAVs) today are mostly used for reconnaissance and sometimes weapons delivery. Remote sensing of chemical-biological (CB) agents is another beneficial use of UAVs. While remote sensing of CB agents can be done by LIDAR spectroscopy, this technology is less spatially precise and less sensitive than actual measurements on a collected sample. One family of UAVs of particularly unique benefit for CB sampling and in-flight analysis is the Honeywell family of Organic Air Vehicles (OAVs). This vehicle with its ability to hover and stare has the unique ability among UAVs to collect and analyze chem-bio samples from a specific location over extended periods of time. Such collections are not possible with other micro-air-vehicles (MAVs) that only operate in fly-by mode. This paper describes some of the Honeywell OAV features that are conducive to CB detection.