Abstract: A blower of an HVAC system includes an air inlet, an air outlet, a blower wheel with blades, a motor operable to cause the blower wheel to rotate, and a blower housing within which the blower wheel is positioned. The blower housing includes a top panel, a bottom panel, and a connecting panel. The top panel and the bottom panel are connected to the connecting panel. The top panel includes a curved edge extending from a bottom edge of the connecting panel to a top edge of the connecting panel. An expansion angle of the curved edge of the top panel changes as a function of position along the curved edge of the top panel. The bottom panel may have a shape corresponding to a mirror image to that of the top panel.

Abstract: An adiabatic cooling system includes a condenser coil and at least one mist chamber positioned around the condenser coil such that at least a portion of intake air for the adiabatic cooling system passes through the mist chamber prior to contacting the condenser coil. The at least one mist chamber includes a first cooling pad with a first intake-side face and a first output-side face and a second cooling pad with a first intake-side face and a first output-side face. The second-intake side face of the second cooling pad faces the first output-side face of the first cooling pad and is separated from the first-output side face of the first cooling pad by a gap. The gap includes a mist of water.

Abstract: An adiabatic cooling system includes a condenser coil and at least one mist chamber positioned around the condenser coil such that at least a portion of intake air for the adiabatic cooling system passes through the mist chamber prior to contacting the condenser coil. The at least one mist chamber includes a first cooling pad with a first intake-side face and a first output-side face and a second cooling pad with a first intake-side face and a first output-side face. The second-intake side face of the second cooling pad faces the first output-side face of the first cooling pad and is separated from the first-output side face of the first cooling pad by a gap. At least one nozzle is configured, when the adiabatic system is operating in a wet mode, to provide a mist of water into the gap.

Abstract: An adiabatic cooling system includes a condenser coil and at least one mist chamber positioned around the condenser coil such that at least a portion of intake air for the adiabatic cooling system passes through the mist chamber prior to contacting the condenser coil. The at least one mist chamber includes a first cooling pad with a first intake-side face and a first output-side face and a second cooling pad with a first intake-side face and a first output-side face. The second-intake side face of the second cooling pad faces the first output-side face of the first cooling pad and is separated from the first-output side face of the first cooling pad by a gap. At least one nozzle is configured, when the adiabatic system is operating in a wet mode, to provide a mist of water into the gap.

Abstract: A blower of an HVAC system includes an air inlet, an air outlet, a blower wheel with blades, a motor operable to cause the blower wheel to rotate, and a blower housing within which the blower wheel is positioned. The blower housing includes a top panel, a bottom panel, and a connecting panel. The top panel and the bottom panel are connected to the connecting panel. The top panel includes a curved edge extending from a bottom edge of the connecting panel to a top edge of the connecting panel. An expansion angle of the curved edge of the top panel changes as a function of position along the curved edge of the top panel. The bottom panel may have a shape corresponding to a mirror image to that of the top panel.