HVAC system with multipurpose cabinet for auxiliary heat transfer components

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#For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following brief description, taken in connection with the accompanying drawings and detailed description, wherein like reference numerals represent like parts.

#FIG. 1 is a schematic view of an HVAC system comprising a multipurpose cabinet for an AHTC according to an embodiment of the disclosure;

#FIG. 2 is a schematic view of an HVAC system comprising a multipurpose cabinet for an AHTC according to another embodiment of the disclosure;

#HVAC systems may comprise an auxiliary heat transfer component (AHTC) in addition to a primary heat exchanger (PHE). In some embodiments, the AHTC may be configured for use in the case of failure of a PHE. In other embodiments, an AHTC may be configured for use in concert with a PHE to provide the HVAC system with supplemental heat transfer capacity. For example, when a heating PHE, such as a furnace, is used in combination with a heating AHTC, the total heating capacity of the HVAC system may comprise at least the sum of the heating capacities of the heating AHTC and the heating PHE. Similarly, when a cooling PHE, such as an evaporator coil, is used in combination with a cooling AHTC, the total cooling capacity of the HVAC system may comprise at least the sum of the cooling capacities of the cooling AHTC and the cooling PHE.

#In other embodiments of an HVAC system, an AHTC may be configured for simultaneous use with a PHE to provide the HVAC system an improved ability to more accurately deliver a desired rate of heat transfer and/or to deliver air to a conditioned space at a selected temperature with greater control. For example, because a cooling PHE may cool air to a temperature below a desired delivery temperature, a heating AHTC may be used to warm the air so that a selected delivery temperature may be achieved. Similarly, because a heating PHE may heat air to a temperature above a desired delivery temperature, a cooling AHTC may be used to cool the air so that a selected delivery temperature may be achieved.

#In some embodiments, a single PHE may selectively provide heating or cooling, as may be the case of a heat exchanger of a so-called heat pump system. Similarly, an AHTC may selectively provide heating or cooling, as may be the case of a hydronic heat exchanger (HHE) which primarily uses heated or cooled water as a heat transfer medium. In other embodiments, an AHTC may comprise one or more resistive electrical heat elements (REHE) that are configured to generate heat by converting electrical energy into heat energy.