Displacement-induction neutral wall air terminal unit

An induction-displacement neutral wall air terminal unit comprising:

• a housing defining:
• a supply airflow path extending from a ventilation air inlet to a supply air outlet;
• a return airflow path extending from a return air inlet and the supply airflow path;
• and
• a heating airflow path defined within the housing and extending between an inlet and an outlet, the heating airflow path being permanently separated from both of the supply and the return airflow paths by at least one interior wall;
• a plurality of induction-type nozzles in direct fluid communication with the ventilation air inlet and being located upstream of the supply air outlet and being within a portion of the housing defining the supply airflow path such that an airflow from the ventilation air inlet flows through the plurality of induction-type nozzles and into the supply airflow path;
• a plurality of displacement-type nozzles located between the supply air outlet and the plurality of induction-type nozzles and being within a portion of the housing defining the supply airflow path;
• an air movement device for moving air across the heating element and through the heating airflow path;
• a heating element disposed within a portion of the housing defining the heating airflow path;
• and
• a return air coil disposed within a portion of the housing defining the return airflow stream;
• wherein the induction-displacement neutral wall air terminal unit has a first, second, and third operational mode:
• the first operational mode being a displacement ventilation cooling only mode wherein air from the ventilation air inlet induces air through the return airflow path and into the supply airflow path, through the plurality of displacement-type nozzles, and out of the supply air outlet, and wherein the heating element and air movement device for moving air across the heating element are deactivated;
• the second operational mode being a heating only mode wherein the heating element and air movement device for moving air across the heating element are activated to generate a heated airflow from the heating air inlet to the heating air outlet without air flowing from the ventilation air inlet into the supply airflow path;
• the second mode being a simultaneous heating and displacement ventilation cooling mode wherein air from the ventilation air inlet induces air through the return airflow path and into the supply airflow path, through the plurality of displacement-type nozzles and out of the supply air outlet and wherein the heating element and air movement device for moving air across the heating element are activated to generate a heated airflow from the heating air inlet to the heating air outlet.