Sub-terranean updraft tower (STUT) power generator

A Sub-Terranean Updraft Tower for generating power, comprising:

• an outer downdraft shaft extending from a downdraft shaft top having a downdraft inlet orifice for air entry to a downdraft shaft bottom, the downdraft shaft top being positioned near grade or above grade and the downdraft shaft bottom extending deep below grade;
• an inner updraft shaft concentrically located within the outer downdraft shaft, the inner updraft shaft extending from near the downdraft shaft bottom to an elevation higher than the downdraft shaft top and having an updraft inlet orifice in fluid communication with the outer downdraft shaft only at an airflow transition region located near the downdraft shaft bottom;
• an updraft tower supporting an above grade portion of the inner updraft shaft with an updraft outlet orifice at or near a top of the updraft tower and houses a vertical axis vertical airflow wind turbine disposed in the inner updraft shaft, the vertical axis vertical airflow wind turbine configured to generate rotational velocity from moving air in the inner updraft shaft;
• and
• airflow partitions in at least one of the shafts that are physical objects configured to reduce lateral moving air flow and promote coherent air flow.

A method of manufacturing a Sub-Terranean Updraft Tower, the method comprising the steps of:

• boring out the ground to make a deep sub-terranean bored shaft;
• inserting an outer downdraft shaft lining into the bored shaft to define an outer wall of an outer downdraft shaft;
• attaching an air intake frustum to the top of the outer down draft shaft;
• inserting an inner updraft shaft lining inside of the outer downdraft shaft lining to define an inner wall of the outer downdraft shaft and an outer wall of the inner updraft shaft, the inner updraft shaft lining extended above the air intake frustum with a tower;
• inserting a vertical axis vertical airflow wind turbine in the inner updraft shaft at a point near or above the air intake frustum;
• and
• adding airflow partitions into at least one of the outer downdraft shaft or the inner updraft shaft.