Systems, devices and methods, etc., comprising at least two separate and distinct environmental climate control devices that both serve the mixed use open space, and which environmental climate control devices are centrally controlled to provide at least two different HVAC-controlled zones, for example to differentiate between the zones according to at least one of temperature, humidity, pressure or contaminant level.

A safety system implemented within a structure includes a source of breathable air, and a fixed piping system to supply the breathable air from the source to each level of a number of levels of the structure. The fixed piping system is implemented in a loop architecture including a first portion proximate the each level of the number of levels and a second portion farther away therefrom. In accordance with the loop architecture, the first portion and the second portion are implemented as a continuous loop with respect to the source of the breathable air such that, even during a compromise of a first sub-portion of the first portion relevant to one or more level(s) of the number of levels proximate thereto, unaffected by the compromise, the breathable air continues to be supplied to a second sub-portion of the first portion by way of the second portion.

An air system includes an enclosure. A compressor, a first energy exchange device, an expansion device, and a second energy exchange device are each positioned in or along the enclosure and connected in a closed refrigerant loop. A first inlet receives air being psychrometrically controlled in the enclosure from a first source. A first outlet removes the psychrometrically controlled air from the enclosure. A second inlet receives air being non-psychrometrically controlled in the enclosure from a second source. A second outlet removes the non-psychrometrically controlled air from the enclosure. A third energy exchange device positioned in or along the enclosure exchanges energy between the psychrometrically controlled air and the non-psychrometrically controlled air. The enclosure is adapted for insertion through an opening having opposed parallel sides having a dimension of 36 inches or less.

Provided is a height difference setting system capable of setting a transport capacity of refrigerant in an appropriate state. A height difference setting system (1) is constituted by a plurality of components. Information is communicated between the components, and accordingly a height difference between an outdoor unit (8) and an indoor unit (9) that constitute an air conditioner (7) installed on or in a building (6) is set. The height difference setting system (1) includes components that function as an outdoor unit height information obtaining unit (2), an indoor unit height information obtaining unit (3), a height difference setting unit (4), and a transport capacity adjusting unit (5). The outdoor unit height information obtaining unit (2) and the indoor unit height information obtaining unit (3) obtain outdoor unit height information indicating a height of an installation place of the outdoor unit (8) and indoor unit height information indicating a height of an installation place of the indoor unit (9), respectively. The height difference setting unit (4) sets a height difference between the outdoor unit and the indoor unit on the basis of the outdoor unit height information and the indoor unit height information. The transport capacity adjusting unit (5) adjusts a transport capacity of refrigerant to be transported from the outdoor unit to the indoor unit on the basis of the height difference set by the height difference setting unit (4).

An access control system receives a trigger command for controlling a ventilation system; determines that the trigger command includes a lock trigger to hold an entrance door in a closed position; and induces a locking differential air pressure between opposite sides of the entrance door in response to the lock trigger, where the locking differential air pressure is sufficient to bias the entrance door to contact or to increase contact with a door frame in the closed position. The access control system may also determine that the trigger command includes an open assist trigger to ease an opening of the entrance door; and may induce an opening differential air pressure between the opposite sides of the entrance door in response to the open assist trigger, where the opening differential air pressure is sufficient to bias the entrance door to reduce contact with the door frame in the closed position.

Systems, devices and methods, etc., comprising at least two separate and distinct environmental climate control devices that both serve the mixed use open space, and which environmental climate control devices are centrally controlled to provide at least two different HVAC-controlled zones, for example to differentiate between the zones according to at least one of temperature, humidity, pressure or contaminant level.

An apparatus includes a processor and a blower drive. The processor receives an altitude and a first blower coefficient. The processor determines a second blower coefficient based on the first blower coefficient and the altitude. The blower drive receives the second blower coefficient and adjusts at least one of a speed and a torque of a motor based on the second blower coefficient.

Provided is a height difference setting system capable of setting a transport capacity of refrigerant in an appropriate state.

A height difference setting system (1) is constituted by a plurality of components. Information is communicated between the components, and accordingly a height difference between an outdoor unit (8) and an indoor unit (9) that constitute an air conditioner (7) installed on or in a building (6) is set. The height difference setting system (1) includes components that function as an outdoor unit height information obtaining unit (2), an indoor unit height information obtaining unit (3), a height difference setting unit (4), and a transport capacity adjusting unit (5). The outdoor unit height information obtaining unit (2) and the indoor unit height information obtaining unit (3) obtain outdoor unit height information indicating a height of an installation place of the outdoor unit (8) and indoor unit height information indicating a height of an installation place of the indoor unit (9), respectively. The height difference setting unit (4) sets a height difference between the outdoor unit and the indoor unit on the basis of the outdoor unit height information and the indoor unit height information. The transport capacity adjusting unit (5) adjusts a transport capacity of refrigerant to be transported from the outdoor unit to the indoor unit on the basis of the height difference set by the height difference setting unit (4).

A structure for a multi-story building comprises a first passageway constructed internally within a building being configured with a mount for a ducted condenser unit (DCU) of a split type, unitary air conditioning system to achieve a desired level of condenser based heat dissipation and with a plurality of penetrations to accommodate a conduit through which refrigerant circulates between inside and outside units of the air conditioning system; and a second passageway constructed internally within the building for receiving air discharged from the DCU the second passageway terminating at an opening of the building through which the discharged air is exhausted to the atmosphere. The passageways have walls that are essentially closed, with the exception of the wall that is formed with an opening through which the discharged air flows. One or both of the first and second passageways upwardly extends across at least two stories of the building.

A refrigeration system includes a heat source unit, a plurality of utilization units, a height-associated value detection unit and a pressure control unit. The heat source unit has a compressor and a heat source-side heat exchanger that functions as a radiator. Each utilization unit has a pressure reducer and a utilization-side heat exchanger that functions as an evaporator. The height-associated value detection unit detects a height-associated value of each utilization unit. The height associated value of each utilization unit corresponds to a height of the utilization unit. The height of each utilization unit is a vertical distance between the utilization unit and the heat source unit. The pressure control unit determines whether each of the utilization units is in operation or stopped and performs refrigerant pressure control based on the height-associated values of the utilization units that have been determined to be in operation.