A cleaning device includes a housing, an air driver, an ozone generator, and a catalyst. The housing defines an inlet, an outlet, and an internal cavity connecting the inlet to the outlet. The air driver is positioned within the internal cavity. The air driver is configured to draw contaminated air from an external environment into the inlet and through the internal cavity of the housing to facilitate decontaminating the contaminated air and emitting clean air out of the outlet into the external environment. The ozone generator is positioned within the internal cavity. The ozone generator is configured to generate ozone. The catalyst is positioned within the internal cavity. The ozone and/or the catalyst are configured to interact with the contaminated air to produce the clean air.

A cleaning device includes a housing having a first end defining an inlet and an opposing second end defining an outlet. The housing defines an internal cavity. The housing has a first portion, a second portion, and an intermediate portion. The first portion defines a first chamber of the internal cavity that is connected to the inlet. The first portion has a first width. The second portion defines a second chamber of the internal cavity that is connected to the outlet. The second portion has a second width greater than the first width. The intermediate portion extends between the first portion and the second portion. The intermediate portion defines an intermediate chamber. The intermediate portion has a linear profile or a non-linear profile. The cleaning device further includes an air driver positioned within the first chamber, an ozone generator positioned within the intermediate portion, and a catalyst positioned within the second chamber.

A system usable in a nuclear environment provides a reservoir of liquefied breathable gas in fluid communication with a deployment system. The deployment system uses a stream of the breathable gas from the reservoir to operate a gas turbine which runs an electrical generator that is mechanically connected therewith to generate electrical power that is stored in a battery bank. The stream of breathable gas then flows from the turbine and is split between a heat exchanger that is situated in heat exchange relation with the interior region of the main control room and an outlet that provides breathable gas to the control room. The portion of the stream that flows through the heat exchanger cools the main control room. The other portion of the stream that provides breathable gas to the main control room also recirculates the atmosphere in the control room.

A system usable in a nuclear environment provides a reservoir of liquefied breathable gas in fluid communication with a deployment system. The deployment system uses a stream of the breathable gas from the reservoir to operate a gas turbine which runs an electrical generator that is mechanically connected therewith to generate electrical power that is stored in a battery bank. The stream of breathable gas then flows from the turbine and is split between a heat exchanger that is situated in heat exchange relation with the interior region of the main control room and an outlet that provides breathable gas to the control room. The portion of the stream that flows through the heat exchanger cools the main control room. The other portion of the stream that provides breathable gas to the main control room also recirculates the atmosphere in the control room.

Many people die each year from smoke inhalation due to residential fires. An enclosed space that provides clean and breathable air to people can save many lives when there is a fire and people are unable to escape. The device can be placed in a small and easily accessible space in a dwelling. The device recirculates and purifies air so that people can breathe while they wait for emergency responders.

Many people die each year from smoke inhalation due to residential fires. An enclosed space that provides clean and breathable air to people can save many lives when there is a fire and people are unable to escape. The device can be placed in a small and easily accessible space in a dwelling. The device recirculates and purifies air so that people can breathe while they wait for emergency responders.

A packed bed for a heat exchanger may comprise a frame and a first fin layer disposed within the frame. A second fin layer may be disposed within the frame. A first perforated sheet may be disposed between the first fin layer and the second fin layer. A sorbent material may be disposed within a volume of at least one of the first fin layer or the second fin layer.

A packed bed for a heat exchanger may comprise a frame and a first fin layer disposed within the frame. A second fin layer may be disposed within the frame. A first perforated sheet may be disposed between the first fin layer and the second fin layer. A sorbent material may be disposed within a volume of at least one of the first fin layer or the second fin layer.

A collective NBC filtration system (FIG. 1A) for providing positive-pressure purified air to a plurality of subjects in a protected space, or in an environment which cannot be maintained at positive pressure, in conjunction with one or more facepiece fluidly connected to the NBC filtration system. The system comprises: A casing body [102] including a first section [136] defining an inner volume therein, and a second section [138] adjacent to the first section. The second section includes an inlet port [116], The first section has a larger cross-section than the second section, and forms a peripheral first ledge [142] surrounding the second section. At least one NBC filter accommodated in the inner volume. The at least one NBC filter is supported on the first ledge [142], A lid [104] including a central portion [154] and a second ledge [152] surrounding the central portion. The central portion [154] includes a plurality of outlet ports [118], which are sealable. The lid [104] is openable to provide access to the inner volume and is securely closeable to affix the at least one NBC filter therein the inner volume by the second ledge [152], The lid [104] and the at least one NBC filter define, when the lid is securely closed, an outlet compartment there between. The outlet compartment has about the same cross-section as the second section. A blower [108] housed within the second section. A suction port of the blower being fluidly coupled to the inlet port. The system is configured such that the second section [138] fluidly couples the inlet port [116] to at least one inlet of the respective at least one NBC filter, and, when the lid [104] is securely closed, the outlet compartment [302] fluidly couples at least one outlet of the respective at least one NBC filter to the one or more outlet ports [118] but is otherwise fluidly sealed, thereby preventing potentially contaminated air from entering the outlet compartment, except via the at least one NBC filter.

A packed bed for a heat exchanger may comprise a frame and a first fin layer disposed within the frame. A second fin layer may be disposed within the frame. A first perforated sheet may be disposed between the first fin layer and the second fin layer. A sorbent material may be disposed within a volume of at least one of the first fin layer or the second fin layer.