Environmental control units

For these systems to provide environmentally controlled atmospheres, environmental control units are being developed to be compatible with collective protection systems. At the present, however, there are neither heaters nor air conditioners that can be used with collective protection equipment. The air force s FDECU, currently in late-stage development, is the primary candidate and is able to heat and cool. 

FDECU field deployable environmental control unit FEMA Federal Emergency Management Agency FLD Field Hospital... 

People with severe physical impairments may only be able to effectively manipulate a single input device. Integrated controls are used to facilitate using a single input device (e.g., joystick, head switches, voice recognition system) to control multiple actuators (e.g., power wheelchair, environmental control unit, manipulator). This provides the user with greater control over the environment. The M3S-Multiple Master Multiple Slave bus is designed to provide simple, reliable access to a variety of assistive devices. Assistive devices include input devices, actuators, and end-effectors. M3S is based on the Computer Area Network (CAN) standard. 

Infrared communication now is available in many AAC devices. Infrared output supports the same functions as the RS-232c serial data output, but without requiring direct wiring or linking between operating devices. Infrared interfaces providing computer access improve the independence of AAC users because no physical connection needs to be manipulated to activate the system. Infrared interfaces can perform as environmental control units by learning the codes of entertainment and other electronic systems. 

ADL technology enables a person to live independently as much as possible. Such devices as environmental control units, bathroom aids, dressing assists, automatic door openers, and alarms are all considered aids... 

It can be seen that a dashed line has been drawn around the block containing the environmental control operations. This identifies the unique role of environmental control operations in a chemical plant conplex. A single environmental control unit may treat the waste from several processes. For exanple, the waste water treatment facility for an oil refinery might treat the waste water from as many as 20 separate processes. In addition, the refinery may contain a single stack and incinerator to deal with gaseous wastes from these processes. Often, this common environmental control equipment is not shown in the PFD for an individual process, but is shown on a separate PFD as part of the off site section of the plant. Just because the environmental units do not appear on the PFD does not indicate that they do not exist or that they are uninportant. 

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