A portable air conditioning assembly includes a box that may contain ice thereby facilitating the ice to cool an interior of the box. A handle is hingedly coupled to the box and the handle may be gripped. A fan unit is coupled to the box. The fan unit urges air inwardly with respect to the box. The fan unit includes a baffle to direct to air onto the ice. Thus, the ice may cool the air. The fan unit urges the cooled air outwardly from the box. Thus, the cooled air may cool a user.

An HVAC system having an airflow path, a primary heat exchanger disposed along the airflow path, wherein the airflow path at least partially passes through the primary heat exchanger, and a multipurpose cabinet selectively configurable between at least a first configuration for housing a first type of auxiliary heat transfer component and a second configuration for housing a second type of auxiliary heat transfer component, wherein the airflow path at least partially passes through the multipurpose cabinet.

A portable, adjustable, and flexible waist mounted, self-contained air distribution system for an individual which can distribute pressurized air over the upper or lower body of an individual, directly against the skin or the clothing of the individual, the system including a portable rechargeable battery operated blower fan in communication with a plenum and manifold, the manifold having a primary adjustable and flexible exhaust outlet openings that spreads, throws and disburses a pressurized air flow selectively over the upper or lower body of an individual, thereby allowing air to selectively provide a cooling and evaporate effect.

An arrangement of multiple environmental control systems for a multi-unit structure has a first environmental control system installed in a first unit, a second environmental control system installed in a second unit, a system monitor in communication with each of the environmental control systems and a firewall. Each environmental control system has a control unit coupled to the system monitor through the firewall that prevents unauthorized devices from accessing the respective control unit and a HVAC system device coupled to the respective control unit through the firewall. For each unit, a local user device that is located inside the unit is coupled to the control unit through a local communication interface, and an external user device that is located outside the unit communicates with the control unit through the firewall.

A method for performing extremum-seeking control of a plant includes determining multiple values of a correlation coefficient that relates a control input provided as an input to the plant to a performance variable that characterizes a performance of the plant in response to the control input. The performance variable includes a noise-free portion and an amount of noise. The method includes determining an adjusted correlation coefficient by scaling a first value of the correlation coefficient selected from the multiple values relative to a second value of the correlation coefficient selected from the multiple values. The adjusted correlation coefficient relates the noise-free portion of the performance variable to the control input. The method includes using the adjusted correlation coefficient to modulate the control input provided as an input to the plant.

A micro-climate control system includes a thermoelectric system integrated with a fan assembly. The thermoelectric system is operable to actively cool or heat air as the air passes through the fan assembly. The thermoelectric system includes a thermoelectric heat pump, a heat reject subsystem, and a heat accept subsystem. The fan assembly is operable to draw air from a space to be conditioned and output conditioned air passed through one of the heat reject subsystem and the heat accept subsystem to the space to be conditioned and output air passed through the other away from the space to be conditioned. In this way, the micro-climate control system may provide localized comfort, while allowing a larger climate control system to maintain a more efficient temperature set point. In this way, the overall energy consumption may be reduced while providing the same level of effective comfort.

An air-conditioning device includes a plurality of duct modules and a power module. The duct modules each have a temperature-adjusting unit, an air flow-guiding unit and an energy transmission module. The temperature-adjusting unit is disposed at the second end of the duct module, and has opposing first and second side surfaces. The air flow-guiding unit is disposed at the duct module. The energy transmission module is disposed between the temperature-adjusting unit and the air flow-guiding unit. The power module provides operational power for the duct modules. The air flow-guiding unit guides air flow to enter from the first end of the duct modules. The energy transmission strength of the air flow is enhanced from the energy transmission module. The air flow passes through the first or second side surface of the temperature-adjusting unit, and exists from the second end of the duct modules.

A method by a controller of a cooling system includes calculating a difference between a first temperature of ambient air and a second temperature of pre-cooled air. The pre-cooled air is ambient air that has been cooled by water from a water distribution system before it enters one or more condenser coils. The method further includes determining that the difference between the first and second temperatures is less than or equal to a predetermined temperature difference, and in response, determining that the first temperature is greater than or equal to a minimum temperature. The method further includes, if the first temperature is greater than or equal to the minimum temperature, instructing the water distribution system to distribute the water to pre-cool the ambient air for a predetermined length of time and to disable the distribution of the water after the predetermined amount of time has elapsed.

A distribution system is adapted for use with a mattress and a personal comfort system with an air conditioning system operable for outputting a conditioned air flow. The distribution system includes at least top and bottom layers of fabric material and a spacer structure disposed between the bottom and top layers. The spacer structure defines an internal volume within the distribution layer and is configured to enable the received conditioned air flow to flow therethrough. This flow of conditioned air has a cooling or heating effect on a body on the mattress.

A ventilation device for ventilating rooms, has a first air routing device for routing a first flow of air, the routing device having a first room-side outlet, a first flow space in which at least one first fan capable of bidirectional operation is arranged, and a first outside outlet; a second air routing device for routing a second flow of air, which is fluidically completely separate from the first air routing device and has a second room-side outlet, a second flow space in which at least one second fan capable of bidirectional operation is arranged, and a second outside outlet; an integral gas-solid heat exchanger adapted to route the first flow of air and the second flow of air in a respective set of passageways, in a fluidically separated but thermally coupled manner, wherein the solid in the first and the second air routing device additionally forms a respective regenerator.