Embodiments of the present disclosure include methods and systems of circulating air in an enclosed environment. In such embodiments, the system may comprise an air handling unit (AHU), the AHU including an indoor air inlet to receive an indoor airflow from the enclosed environment and an indoor air outlet to expel the indoor airflow, a conditioning element arranged between the inlet and the outlet configured to at least heat or cool the indoor airflow as it flows thereover, one or more fan units arranged between the inlet and the outlet configured to provide velocity to the indoor airflow, and an air treatment assembly (ATA) arranged within or proximate the AHU, the ATA including an air inlet configured to receive a portion of the indoor airflow received by the AHU indoor air inlet.

A heating and cooling system or installation for heating or cooling air within a building space, including a water chiller for chilling water and a coil to which the chilled water can be delivered. Air can then be driven by a fan through the coil to cool the air and the cooled air can be delivered into the building space for cooling the building space. The system can include a water heating facility to heat water that is delivered to the coil so that air driven through the coil can be heated. The coil is connected to ducting for delivering cooled or heated air to the building space.

A plurality of panels affixed to one another used for construction of an air handler unit including a first panel member having first circumference affixed to a second panel member having a second circumference; wherein the second circumference is smaller than the first circumference to form a first flange.

This panel (6) for a module of an air handling unit defines a main axis perpendicular to its surface and includes an outer plate (8), an inner plate (10), a layer (12) of insulating material arranged between the outer plate and the inner plate, and a joining element (14) arranged around the layer of insulating material and intercalated between the outer plate and the inner plate along the main axis. The plates and the layer of insulating material are parallel to each other and perpendicular to the main axis of the panel. The joining element includes both a male assembly part (34) formed by a projecting rib and a female assembly part (36) formed by a hollow groove and the projecting rib of the joining element is configured to nest into the hollow groove of another joining element with an identical transversal section belonging to another panel.

Systems and methods for circulating air in an enclosed environment are disclosed. In some embodiments, the system includes an inlet to receive air from outside of the enclosed environment and an air handling unit coupled to the inlet and also configured to receive circulated air from the enclosed environment. The air handling unit can be configured to affect a temperature of at least one of the received outside air and the received circulated air. Based on the received outside air and the received circulated air, the air handling unit can be further configured to generate air for supplying to the enclosed environment.

Systems and methods are provided for operating a central air conditioning and/or heating system within a building that includes one or more blowers and ducts communicating from the blower(s) to respective rooms within the building. The system includes a vent in each of the rooms including an actuator for selectively opening and closing the vent, one or more sensors in each room for detecting occupants, and a controller communicating with the actuators and the one or more sensors for directing the actuators to open or close respective vents based at least in part on data from the one or more sensors.

Disclosed are method and system for treating concrete in mixing drums of delivery vehicles having automated rheology (e.g., slump) monitoring systems programmed to dose fluids into concrete based on the monitored rheology. The present invention takes into account a Revolution-To-Discharge value (RTD) which reflects drum rotations needed to move concrete towards and through the mixing drum opening from which concrete is discharged, and also takes into consideration a Volume-Per-Revolution-Upon-Discharge (VPRUD) value which reflects the relation between the rate of discharge and rheology (e.g., slump) of concrete upon discharge. The invention is especially useful for reclaiming concrete in the drum after delivery and can confirm rheology based upon peak (maximum) discharge pressure. The present inventors found surprisingly that discharge pressure readings are useful for recalibrating automated rheology monitoring systems as well as for reporting and/or treating the remainder concrete.

A sound level control system for a heating, ventilation, and air conditioning (HVAC) system is provided. The sound level control system comprises an outdoor unit with a compressor, an outdoor fan, and an outdoor controller and a communication device located at a predefined distance from the outdoor unit. The communication device measures sound levels in response to operating the outdoor unit. The outdoor controller is configured to receive a first noise level limit for a predefined time period, receive an instruction related to selective control of the outdoor unit, selectively control both of the compressor to rotate at a first compressor speed and the outdoor fan to rotate at a first fan speed based on the noise level limit for the predefined time period, and receive information related to whether a sound pressure level at a predefined location exceeds the first noise level limit for the predefined time period.

This panel (6) for an air handling unit defines a main axis (X6) perpendicular to its surface and includes at least two first plates (8), each provided with at least two folded-over edges, and at least two second plates (10), each provided with at least two folded-over edges. The plates are parallel to one another and perpendicular to the main axis of the panel. The panel includes at least one internal joining element (14) inserted between the first and second plates along the main axis.

A method for controlling a climate parameter in a room of a building, the method comprising obtaining information regarding the climate parameter, the information including room specific measurements of the climate parameter during at least one climate control process, based on the room specific measurements of the climate parameter providing or amending a correspondence indicator CI, such that the correspondence indicator comprises information indicative of a rate of change of the climate parameter within the at least one room during the at least one climate control process, obtaining climate setting information including a desired climate parameter value C and a corresponding desired time t.sub.1, obtaining a starting value V.sub.1 of the climate parameter of the at least one room, based on the correspondence indicator CI, the desired time t.sub.1, the starting value V.sub.1 and the desired climate parameter value C.sub.1 calculating a measure M.sub.1 for an amount of time t needed to 1 change the climate parameter from the starting value V.sub.1 of the climate parameter to the desired climate parameter value C.sub.1, and scheduling a second climate control process of the climate parameter of the at least one room as a function F.sub.1 of the measure M.sub.1.