Embodiments disclosed herein relate to air flow control blinds or tents useful for controlling scents emitted therefrom. The air flow control blinds can include walls, a roof, windows in the walls, and at least one directional vent disposed on the walls, where the at least one directional vent includes an inlet on the inner surface of the blind and an outlet fluidly connected to the inlet, the outlet facing downward on the outer surface of the blind to direct fluids flowing therethrough towards the ground. The air flow control blinds may include one or more roof vents adjacent to the walls on the roof. The air flow control blind includes at least one oxidant generator mount on one or more of the roof or the walls to mount an oxidant generator thereon. Blind systems can include a portable oxidant generator positioned in the blind.

Embodiments disclosed herein relate to air flow control blinds or tents useful for controlling scents emitted therefrom. The air flow control blinds can include walls, a roof, windows in the walls, and at least one directional vent disposed on the walls, where the at least one directional vent includes an inlet on the inner surface of the blind and an outlet fluidly connected to the inlet, the outlet facing downward on the outer surface of the blind to direct fluids flowing therethrough towards the ground. The air flow control blinds may include one or more roof vents adjacent to the walls on the roof. The air flow control blind includes at least one oxidant generator mount on one or more of the roof or the walls to mount an oxidant generator thereon. Blind systems can include a portable oxidant generator positioned in the blind.

An indoor live ammunition shooting range facility system includes a ventilation facility installed in an indoor live ammunition shooting range, and configured to ventilate air of the indoor live ammunition shooting range; a targeting device facility installed in the indoor live ammunition shooting range, and configured to provide a shooting target; a bulletproof facility installed to protect components exposed to an inside of the indoor live ammunition shooting range among components configuring the ventilation facility and the target device facility and to protect a wall surface of the indoor live ammunition shooting range; a bullet head recovery facility installed on a side opposite to a shooting position, and configured to recover a bullet head; and a control facility installed in the indoor live ammunition shooting range, and configured to control the ventilation facility, the target device facility and the bullet head recovery facility.

An indoor live ammunition shooting range facility system includes a ventilation facility installed in an indoor live ammunition shooting range, and configured to ventilate air of the indoor live ammunition shooting range; a targeting device facility installed in the indoor live ammunition shooting range, and configured to provide a shooting target; a bulletproof facility installed to protect components exposed to an inside of the indoor live ammunition shooting range among components configuring the ventilation facility and the target device facility and to protect a wall surface of the indoor live ammunition shooting range; a bullet head recovery facility installed on a side opposite to a shooting position, and configured to recover a bullet head; and a control facility installed in the indoor live ammunition shooting range, and configured to control the ventilation facility, the target device facility and the bullet head recovery facility.

An air conditioning system includes a first unit and a second unit. The space above the ceiling of each of a plurality of clean rooms is included in the chamber as a single space common to a plurality of the clean rooms. The first clean room is higher than the second clean room in air cleanliness.

An external-air conditioning apparatus and a ventilation system are provided, the external-air conditioning apparatus includes a fin tube type heat exchanger and a housing that stores this heat exchanger. The housing includes a base body that serves as a back side of the apparatus body and a cover body that serves as a front side of the apparatus body, and the base body and the cover body are dividable and detachable in structure. The base body has a base portion, a partitioning portion, a connecting pipe portion, a heat-exchanger-holding structure portion, and a water receiving portion. The cover body is a structure in which a front wall portion and a three-side peripheral wall portion are formed integrally with each other, and a part in which the peripheral wall portion is not formed is an inlet for external air.

An external-air conditioning apparatus and a ventilation system are provided, the external-air conditioning apparatus includes a fin tube type heat exchanger and a housing that stores this heat exchanger. The housing includes a base body that serves as a back side of the apparatus body and a cover body that serves as a front side of the apparatus body, and the base body and the cover body are dividable and detachable in structure. The base body has a base portion, a partitioning portion, a connecting pipe portion, a heat-exchanger-holding structure portion, and a water receiving portion. The cover body is a structure in which a front wall portion and a three-side peripheral wall portion are formed integrally with each other, and a part in which the peripheral wall portion is not formed is an inlet for external air.

Embodiments disclosed herein relate to air flow control blinds or tents useful for controlling scents emitted therefrom. The air flow control blinds include one or more walls, a roof, windows in the one or more walls, and at least one directional vent disposed on the one or more walls, where the at least one directional vent includes an inlet on the inner surface of the blind and an outlet fluidly connected to the inlet, the outlet facing downward on the outer surface of the blind to direct fluids flowing therethrough towards the ground. The air flow control blinds may include one or more roof vents adjacent to the one or more walls on the roof to remove air from an interior of the blind therethrough. The air flow control blind includes at least one oxidant generator mount on one or more of the roof or the one or more walls to mount an oxidant generator thereon. Blind systems include a portable oxidant generator positioned in the blind. The blinds and blind systems are used to control scents therein or therearound.

Embodiments disclosed herein relate to air flow control blinds or tents useful for controlling scents emitted therefrom. The air flow control blinds include one or more walls, a roof, windows in the one or more walls, and at least one directional vent disposed on the one or more walls, where the at least one directional vent includes an inlet on the inner surface of the blind and an outlet fluidly connected to the inlet, the outlet facing downward on the outer surface of the blind to direct fluids flowing therethrough towards the ground. The air flow control blinds may include one or more roof vents adjacent to the one or more walls on the roof to remove air from an interior of the blind therethrough. The air flow control blind includes at least one oxidant generator mount on one or more of the roof or the one or more walls to mount an oxidant generator thereon. Blind systems include a portable oxidant generator positioned in the blind. The blinds and blind systems are used to control scents therein or therearound.

A ventilation unit is for ventilating an indoor space, and incorporates an air cleaning device and mechanical restrictor for controlling a restriction to a flow resulting from a pressure differential across the unit. There is determination of the inside and outside air pressures in the vicinity of the unit and of air quality parameters inside and outside. The air cleaning device and the mechanical restrictor are controlled in dependence on the determined air pressures and air quality parameters. This provides a fan-less, and hence low-power ventilation unit, which relies on throttling the natural air flow across the unit to provide flow control, and hence enable control of air quality. The air cleaning device may be operated only when the flow is into the inside space, saving power.