A turbine exhaust case (TEC) of a gas turbine engine comprising: a frame portion that includes an outer ring , an inner ring disposed radially inward of the outer ring , and a plurality of hollow struts connecting the outer ring to the inner ring , wherein an inner diameter (ID) cavity is formed between the inner ring and a bearing assembly disposed radially inward of the inner ring to form an inner diameter (ID) mixing chamber ; a tube located within at least one hollow strut that directs cooling airflow radially inward from outside the TEC to the ID mixing chamber , wherein the tube includes a slot positioned to direct cooling airflow (C) circumferentially into and along a circumferential length of the ID mixing chamber that extends circumferentially around the bearing assembly , wherein the circumferential direction of the cooling airflow expelled from the slot is approximately perpendicular to the radially inward direction the cooling airflow is directed within the tube; and a passage located radially inward of the ID mixing chamber that directs pressurized airflow (P) into the ID mixing chamber for mixing with the cooling airflow, and characterized in that the slot is a single slot positioned on one side of the tube such that the cooling airflow (C) is expelled from only one side of the tube and directed only in a circumferential direction that is the same as a direction of windage in the ID mixing chamber , wherein the windage is generated by rotating components associated with the bearing assembly and some of the created windage migrates to the ID mixing chamber where it flows in said circumferential direction around the ID mixing chamber . a frame portion that includes an outer ring , an inner ring disposed radially inward of the outer ring , and a plurality of hollow struts connecting the outer ring to the inner ring , wherein an inner diameter (ID) cavity is formed between the inner ring and a bearing assembly disposed radially inward of the inner ring to form an inner diameter (ID) mixing chamber ; a tube located within at least one hollow strut that directs cooling airflow radially inward from outside the TEC to the ID mixing chamber , wherein the tube includes a slot positioned to direct cooling airflow (C) circumferentially into and along a circumferential length of the ID mixing chamber that extends circumferentially around the bearing assembly , wherein the circumferential direction of the cooling airflow expelled from the slot is approximately perpendicular to the radially inward direction the cooling airflow is directed within the tube; and a passage located radially inward of the ID mixing chamber that directs pressurized airflow (P) into the ID mixing chamber for mixing with the cooling airflow, and characterized in that the slot is a single slot positioned on one side of the tube such that the cooling airflow (C) is expelled from only one side of the tube and directed only in a circumferential direction that is the same as a direction of windage in the ID mixing chamber , wherein the windage is generated by rotating components associated with the bearing assembly and some of the created windage migrates to the ID mixing chamber where it flows in said circumferential direction around the ID mixing chamber . <EOS>