Adaptive economizer section in air handling unit

An economizer section for retrofitting an air tunnel of an existing air handling unit, the economizer section comprising:

• a. a section housing having a first end and an opposing second end, each of the first end and the second end are configured to couple to an associated air tunnel of an associated air handling unit, the section housing having a central axis parallel to a longitudinal axis of the associated air tunnel of the associated air handling unit;
• i. wherein the section housing comprises a variety of structural elements;
• ii. wherein the variety of structural elements comprise a floor, and a plurality of exterior walls;
• iii. wherein the section housing further comprises a plurality of partition walls;
• iv. wherein each partition wall of the plurality of partition walls is securely attached to one or more structural elements of the variety of structural elements;
• v. wherein the section housing is located downstream relative to a return fan section of an air handling unit and upstream relative to a filter section of the air handling unit;
• b. an energy recovery device;
• i. wherein the energy recovery device is securely attached to two or more partition walls;
• ii. wherein the energy recovery device comprises at least two vertical surfaces;
• c. a plurality of compartments;
• i. wherein each respective compartment of the plurality of compartments is bounded by at least one exterior wall, at least two partition walls, and one vertical surface of the at least two vertical surfaces of the energy recovery device;
• d. a plurality of dampers;
• i. wherein each damper of the plurality of dampers is secured to the section housing;
• ii. wherein the plurality of dampers is configurable to direct airflow for a plurality of modes of operation of the air handling unit;
• iii. wherein the plurality of modes of operation of the air handling unit comprises a normal mode of operation and an economizer mode of operation;
• iv. wherein the plurality of dampers create at least three airflow paths during the normal mode of operation of the air handling unit;
• v. wherein two of the at least three air paths created by the plurality of dampers during the normal mode of operation converge with one another within the economizer section;
• vi. wherein the plurality of dampers create at least two airflow paths during the economizer mode of operation of the air handling unit;
• vii. wherein the at least two airflow paths created by the plurality of dampers during the economizer mode of operation do not mix within one another within the economizer section;
• viii. wherein one of the plurality of dampers is configurable to direct outside airstreams flow substantially perpendicular relative to longitudinal axis of the associated air tunnel;
• ix. wherein airflow passing through the energy recovery device is directed at a substantially 90-degree angle relative to the central axis of the section housing.