A discharge section of a heating, ventilation, and/or air conditioning (HVAC) system, includes a first wall defining an opening configured to receive an air flow from a blower of the HVAC system, a second wall spaced apart from and disposed opposite the first wall, and a diverter baffle disposed at an oblique angle relative to the first wall and the second wall and configured to divert the air flow received through the opening.

A system for conditioning air of a building that comprises a conduit buried in a soil proximate the building at a given depth such that a temperature of the soil at the given depth is different from an air temperature of an environment of the building. The conduit has a breathable wall in fluid communication with the soil. The system further comprises a forced air system in fluid communication with the conduit. The forced air system is operable to draw air from the soil across the breathable wall and along the conduit. The system defines a fluid flow path extending from the breathable wall toward the forced air system. A method of operating the system is also disclosed.

A recoverable and renewable heat recovery system includes a variable speed inverter compressor in fluid connection with a first heat exchanger and a second heat exchanger via a fluid circuit. The system further includes a solar thermal collection module positioned on top of the compressor and in fluid communication with the compressor, the first heat exchanger and the second heat exchanger via the fluid circuit. A light intensity sensor is configured to determine light intensity on the solar thermal collection module. The solar thermal collection module is configured to retain solar energy thermal energy to increase fluid pressure in the compressor.

A superordinate controlling device for a heat source system (1) including a plurality of heat sources, the superordinate controlling device being applied to the heat source system (1) and controlling heat-pump type chillers (2a) and (2b) and absorption-type chillers (2c) and (2d) in such a manner that a heat transfer medium leaving temperature that is the temperature of a heat transfer medium supplied to an external load (6) is equal to a setting temperature. The heat-pump type chillers (2a) and (2b) each have a higher Coefficient of Performance (COP) than that of each of the absorption-type chillers (2c) and (2d). The superordinate controlling device includes a heat transfer medium leaving temperature changing means for carrying out heat transfer medium leaving temperature control, by changing the heat transfer medium leaving temperatures of the heat-pump type chillers (2a) and (2b), when a post-change prediction value of each of the absorption-type chiller (2c) and (2d) predicted based on a supposition that the heat transfer medium leaving temperatures of the heat-pump type chillers (2a) and (2b) are changed exceeds a second underload stop threshold value at which the corresponding one of the absorption-type chiller (2c) and (2d) would have an underload stop.

An air treatment device (1) and a method for heating of aft, in a heating mode, at an air handling unit (2), which comprises a heat recovery device (3). The device further comprises a heat pump (6), comprising an evaporator (7), arranged in a first air stream (4), in the flow direction, after the heat recovery device (3), and a condenser (8) arranged in a second air stream (5), in the flow direction, after the heat recovery device (3). The device further comprises an auxiliary heater (9) for supplying, in addition to the recovered energy, external heat energy. The auxiliary heater (9) is positioned in the first air stream (4), in the flow direction, after the heat recovery device (3) and before the evaporator (7) for heating and thereby the heat pump (6) operation is maintained and a better total efficiency for the plant is achieved.

A system for providing air conditioning to a living space and heating potable water. The system comprising a heat pump circuit comprising a compressor for circulating a refrigerant around the heat pump circuit, a first condenser, a second condenser and an evaporator. The evaporator being adapted to receive a first flow of air from an air inlet to transfer heat from the first flow of air to the refrigerant. The first condenser being adapted to receive a flow of water to transfer heat from the refrigerant to the water. The second condenser being adapted to receive a second flow of air to transfer heat from the refrigerant to the second flow of air. The first flow being provided from the evaporator to a living space by an air outlet.

A method of operating an HVAC system using a controller includes predicting a first predicted temperature of an enclosed space during an unoccupied time with the HVAC system off. The controller determines if the first predicted temperature is less than a set-point temperature. Responsive to a determination that the first predicted temperature is less than the set-point temperature, the controller predicts a second predicted temperature of the enclosed space if the HVAC system is operated for a first runtime. The controller determines if the second predicted temperature is less than the set-point temperature and, responsive to a determination that the second predicted temperature is not less than the set-point temperature, the controller operates the HVAC system for the first runtime.

A geothermal heat exchanger, a geothermal heat arrangement and to a method in connection with a geothermal heat arrangement. The geothermal heat exchanger includes a piping arrangement having a rise pipe and a drain pipe, and a first pump arranged to the piping arrangement. The rise pipe and drain pipe are arranged in fluid communication with each other for circulating the primary working fluid. The rise pipe is provided with a first thermal insulation surrounding the rise pipe along at least part of the length of the rise pipe and the first pump is arranged to circulate the primary working fluid in a direction towards a lower end of the rise pump.

A multi-function heating and cooling device, comprising components for an ambient air-coupled sorption heat pump cycle and vapor compression cooling cycle integrated together inside a single enclosure is proposed. The sorption heat pump portion is configured to provide very high heating efficiency, while the vapor compression portion is configured to provide high cooling efficiency. The evaporator coil for the sorption cycle and the condenser coil for the vapor compression cycle are configured to share a common ambient-air fan, saving space and cost. By combining the two heating-cooling systems into a single enclosure with shared components, the total installed cost and outdoor space required is reduced compared to installing separate heating and cooling systems.

A control device for an HVAC system is provided. Embodiments of the present disclosure generally relate to control devices that facilitate adjustment of heating and cooling setpoints. In one embodiment, the control device allows for concurrent adjustment of the heating and cooling setpoints while maintaining a desired deadband value therebetween.