A device comprising a fin structure, a vent disposed in the fin structure, a cooling coil disposed in the vent, a light disposed in the fin structure and wherein the fin structure is configured to create a Coanda effect for air exiting the vent.

A device comprising a fin structure, a vent disposed in the fin structure, a cooling coil disposed in the vent, a light disposed in the fin structure and wherein the fin structure is configured to create a Coanda effect for air exiting the vent.

A facility-based dual-purpose conditioned air blower system includes a heat exchange unit, a diverter apparatus, and a centrifugal blower. The heat exchange unit includes an ambient air inlet, heat exchange elements, and a conditioned air outlet. The diverter apparatus includes a diverter inlet fluidly coupled to the conditioned air outlet of the heat exchange unit, a first diverter outlet to the facility, and a second diverter outlet. The diverter apparatus is moveable between a first position wherein the first diverter outlet is closed and the second diverter outlet is open, and a second position wherein the first diverter outlet is open and the second diverter outlet is closed. The centrifugal blower includes a blower inlet fluidly coupled to the second diverter outlet of the diverter apparatus, and a blower outlet positioned to ventilate a trailer interior with conditioned air from the conditioned air outlet of the heat exchange unit.

A multi-type air conditioner may include three pipes, including a high-pressure pipe, a low-pressure pipe, and a liquid line which may be connected to a plurality of indoor units, in which some of the indoor units may be operated in a cooling mode and the rest of the indoor units may be operated in a heating mode, such that waste heat from the indoor units operated in the heating mode may be recovered to be used for the indoor units operated in the cooling mode.

An HVAC delivery system to supply air from an HVAC system in proximity to a fan blade. A fan blade for use in a high volume, low-speed fan, wherein the fan blade includes a body portion, a leading edge portion and a trailing portion. The leading edge portion of the fan blade includes a series of steps extending along the length of the leading edge. The fan distributes airflow from the HVAC delivery system.

In the control device 12 of the indoor unit 11, a plurality of communication means 14a to 14c having different communication speeds; communication speed recognizing means 18 for recognizing whether or not a communication line 15 from an outdoor unit 10 is connected to any of the communication means, from the communication speed of the control information signal; and communication means confirmation means 18 for confirming the communication means that performs the following communication based on the recognized communication speed, are provided. According to this, it is possible to recognize the communication speed of an input signal without providing a manual changeover switch. Therefore, it is possible to solve at least one or more of the problems that the installation work is complicated, that a setting error of the changeover switch is likely to be generated, and that the product prices increase.

A multi-type air conditioner may include three pipes, including a high-pressure pipe, a low-pressure pipe, and a liquid line which may be connected to a plurality of indoor units, in which some of the indoor units may be operated in a cooling mode and the rest of the indoor units may be operated in a heating mode, such that waste heat from the indoor units operated in the heating mode may be recovered to be used for the indoor units operated in the cooling mode.

A common vent application and an independent fan coil are disclosed for improved heating, cooling and water making in a building. The independent fan coil obviates the common boilers and chillers in addition to all the common heating and cooling distribution piping used in known systems. Instead, the fan coils contain all the hydronic heating components and all the components needed to provide AC without the use of common boilers and chilled water systems. The fan coils utilize common vent shaft ducting to exhaust the products of combustion generated for the independent tankless water heater. In addition, the common vent shaft may utilize a negative static pressure environment to exhaust the heat of rejection from the AC portion of the fan coil unit.

A chilled beam system may incorporate a terminal unit to provide additional heating and cooling capacity including latent cooling. In a system, terminal units may be distributed and connected to cooperate with a primary air stream from a central air handling unit. The chilled beam and/or terminal units may employ features for enhancing heating mode operation. Control embodiments take advantage of the additional capabilities described.

Disclosed is a dropped ceiling fan that includes an elongated body with a fan inside the elongated body that move air downward in the elongated body with a plate positioned below the fan with a hole in the airflow of the fan, a peripheral intake that surrounds the plate and several inclined elements that direct air that is adjacent to the elongated body into the peripheral intake. The elongated body includes a hole in the top that, in combination with the peripheral intake, defines the intake for the fan, to take inlet air from either the room below or both the room below and the space above the dropped ceiling. Also disclosed is a mounting bracket to permit HVAC ducting to be coupled to the hole on top of the body to permit the fan to be used as a powered register with an HVAC system.