A heating, ventilation, and/or air conditioning (HVAC) packaged unit includes a first refrigerant circuit component configured to change a temperature or a pressure of a refrigerant flowing through the first refrigerant circuit component and a second refrigerant circuit component configured to change a temperature or a pressure of the refrigerant flowing through the second refrigerant circuit component. The first and the second refrigerant circuit components are within a common refrigerant circuit that is disposed within a common support structure. The HVAC packaged unit also includes an interconnection conduit having a length formed from aluminum, a first end segment coupled to a first end of the length, and a second end segment coupled to a second end of the length. The first end segment and the second end segment are each formed from copper, and the interconnection conduit extends between the first refrigerant circuit component and the second refrigerant circuit component.

A panel assembly for a heating, ventilation, and/or air conditioning (HVAC) system includes a base panel having a sheet and a flange formed around a perimeter of the sheet, where the flange includes a plurality of openings, a stiffener bracket configured to couple to the flange and reinforce the base panel, and a liner panel configured to couple to the flange and reinforce the base panel, where the plurality of openings is configured to interchangeably couple to the stiffener bracket and the liner panel.

A panel assembly for a heating, ventilation, and/or air conditioning (HVAC) system includes a base panel having a sheet and a flange formed around a perimeter of the sheet, where the flange includes a plurality of openings, a stiffener bracket configured to couple to the flange and reinforce the base panel, and a liner panel configured to couple to the flange and reinforce the base panel, where the plurality of openings is configured to interchangeably couple to the stiffener bracket and the liner panel.

A stub pipe housing and a method for installing a stub pipe housing in a heating, ventilation, and air conditioning (HVAC) system, the stub pipe housing comprising a first end for sealed contact with an external surface of a cabinet in the HVAC system and a non-permeable material extending to a second end for sealed contact with an external pipe. Sealed contact between the first end and the cabinet, sealed contact between the second end and the external surface, and the non-permeable material ensures any fluid escaping the connection between the stub pipe and the external pipe is directed to the cabinet. The stub pipe housing supports the connection using resilient material, rigid material with compliant seals or some combination. Fluids are directed to flow through the stub pipe opening in the cabinet or directed to flow through other openings.

A stub pipe housing and a method for installing a stub pipe housing in a heating, ventilation, and air conditioning (HVAC) system, the stub pipe housing comprising a first end for sealed contact with an external surface of a cabinet in the HVAC system and a non-permeable material extending to a second end for sealed contact with an external pipe. Sealed contact between the first end and the cabinet, sealed contact between the second end and the external surface, and the non-permeable material ensures any fluid escaping the connection between the stub pipe and the external pipe is directed to the cabinet. The stub pipe housing supports the connection using resilient material, rigid material with compliant seals or some combination. Fluids are directed to flow through the stub pipe opening in the cabinet or directed to flow through other openings.

A mobile air conditioner, comprising: a first heat exchanger, having a first interface and a second interface for a refrigerant to enter and exit; a phase-change energy storage heat exchange device, including a second heat exchanger and a phase-change energy storage working medium, wherein the second heat exchanger and the phase-change energy storage working medium may exchange heat therebetween, and the second heat exchanger has a third interface and a fourth interface for the refrigerant to enter and exit; a first refrigerant pipeline, connected to the first interface and the third interface; and a second refrigerant pipeline, connected to the second interface and the fourth interface.

A mobile air contains: a movable refrigerator, an antifreeze tank, a water pump, and an air cooler. The air cooler at least one includes an evaporator, the antifreeze tank is disposed in the movable refrigerator so as to cool antifreeze, and the antifreeze recycles back to the antifreeze tank from the antifreeze tank via at least one pipe, the water pump, and the evaporator so that environmental hot air is drawn and is cooled by the evaporator, thus recycling cold airs.

A mobile air contains: a movable refrigerator, an antifreeze tank, a water pump, and an air cooler. The air cooler at least one includes an evaporator, the antifreeze tank is disposed in the movable refrigerator so as to cool antifreeze, and the antifreeze recycles back to the antifreeze tank from the antifreeze tank via at least one pipe, the water pump, and the evaporator so that environmental hot air is drawn and is cooled by the evaporator, thus recycling cold airs.

A panel assembly for a heating, ventilation, and/or air conditioning (HVAC) system includes a base panel having a sheet and a flange formed around a perimeter of the sheet, where the flange includes a plurality of openings, a stiffener bracket configured to couple to the flange and reinforce the base panel, and a liner panel configured to couple to the flange and reinforce the base panel, where the plurality of openings is configured to interchangeably couple to the stiffener bracket and the liner panel.

A panel assembly for a heating, ventilation, and/or air conditioning (HVAC) system includes a base panel having a sheet and a flange formed around a perimeter of the sheet, where the flange includes a plurality of openings, a stiffener bracket configured to couple to the flange and reinforce the base panel, and a liner panel configured to couple to the flange and reinforce the base panel, where the plurality of openings is configured to interchangeably couple to the stiffener bracket and the liner panel.