Sub-Terranean Updraft Tower Power Generation
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Solution Overview
Problem
Traditional fossil fuel electrical power generation is inefficient, unsustainable, and polluting, while existing renewable energy technologies like solar and wind power face challenges in adaptability, accessibility, and reliability, requiring a hybrid solution for base-load energy generation that integrates with existing infrastructure.
Innovation Solution
The Sub-Terranean Updraft Tower (STUT) technology uses a combination of downdraft and updraft shafts with Energy Harvesting from thermoelectric power plants, recycling waste heat to generate emissions-free, reliable, and scalable power, independent of weather or location, utilizing geothermal or solar thermal resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If fossil fuel power generation is used, then power supply reliability is maintained, but pollution emission increases and sustainability deteriorates
Solution Approach 1:
The system divides the power generation function into two independent towers: a updraft tower for clean renewable energy generation and a downdraft tower for waste heat recovery. This segmentation allows simultaneous operation of fossil fuel plants with reduced emissions while maintaining power supply reliability through diversified energy sources.
Solution Approach 2:
The invention merges traditional fossil fuel power generation with renewable energy technologies by integrating the updraft tower (solar/wind driven) and downdraft tower (waste heat driven) systems. This combination enables continuous power generation while significantly reducing pollution emissions through the use of renewable energy sources.
2Adaptability or versatility
If classic renewable energy technologies are deployed, then sustainability improves, but adaptability and reliability deteriorate due to weather dependence
Solution Approach 1:
The system combines three independent power generation mechanisms: solar-driven updraft, wind-driven updraft, and waste heat-driven downdraft. This merging creates a hybrid system where if one energy source is unavailable due to weather conditions, the other sources can compensate, ensuring continuous and reliable power generation while maintaining adaptability to various locations.
Solution Approach 2:
The system changes the operational parameters of the towers based on available energy sources. The updraft tower operates during daytime with solar energy and/or when wind is available, while the downdraft tower operates using waste heat from nearby facilities. This parameter adjustment ensures reliable power generation across different weather conditions and times of day.
3Object-generated harmful factors
If solar updraft towers are built, then emission-free power generation is achieved, but device complexity and construction cost increase due to extreme tower height requirements
Solution Approach 1:
The system segments the single tall tower concept into two separate, shorter towers: an updraft tower and a downdraft tower. This segmentation eliminates the need for extreme tower heights while maintaining emission-free power generation. The shorter towers are structurally simpler and more economically feasible to construct.
Solution Approach 2:
Instead of increasing tower height vertically to achieve sufficient temperature differential, the system uses the downdraft tower to create a complementary airflow path. This dimensional change from single-vertical-path to dual-vertical-path system achieves the necessary pressure differential without requiring extreme heights, reducing structural complexity and cost.
4Power
If downdraft towers are constructed, then power generation capability improves, but water consumption increases
Solution Approach 1:
The downdraft tower system uses waste heat from nearby industrial facilities or power plants to drive the downdraft airflow, rather than requiring external water-based cooling systems. This self-service approach utilizes already-present thermal energy resources, eliminating the need for additional water consumption while maintaining power generation capability.
Solution Approach 2:
The system introduces waste heat as an intermediary energy source to drive the downdraft tower. Instead of using water for cooling and power generation, the waste heat from industrial processes serves as the mediator to create the temperature differential needed for downdraft operation, thereby avoiding water consumption while maintaining power generation capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
STUT provides a predictable, controllable, and highly efficient power generation solution that reduces pollution, conserves water, and is adaptable for urban or remote locations, offering a viable transition from fossil fuels to zero-emission power generation with low environmental impact.
Implementation Method 1
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
Implementation Method 2
a thermal barrier coating on the outer downdraft shaft
Implementation Method 3
The classic SUT is an extremely tall tower and if built would be one of the tallest and largest structures on Earth. Existing Updraft Tower technology in the form of Solar Tower-ST, SUT, and Down Draft Towers (DDT), are in development and propose to provide emission-free utility-scale power. However, these Solar Tower-ST, Solar Updraft Tower-SUT systems remain dependent on the solar thermal gain to drive system temperature and pressure differentials
Implementation Method 4
STUT Power generation uses Energy Harvesting of a thermoelectric power plant to create a Hybrid Power Plant, that produces electrical power from a traditional fuel-based Rankine Cycle Process, and also from its recycled waste heat, not exhaust heat
Data Source
AI summary
A Sub-Terrestrial Updraft Tower (STUT), combination subsurface Downdraft/Updraft Tower, comprising an Inner Updraft Shaft and Outer Downdraft Shaft, housing the Inner Updraft Shaft, receiving air flow from air-inlets at surface level into Outer Downdraft Shaft. Upon reaching the bottom of the Outer Downdraft Shaft, air flow reverses In direction, inward and upward, into the Inner Updraft Shaft. Volumetric Displacement or airflow is induced and sustained via the injection of air and heat into the Downdraft/Updraft respectively; driving a plurality of sustained system pressure biases, and fed by temperature differentials that are initiated, sustained, and enhanced due to the configuration, orientations and functions of numerous STUT elements including partitions, thermal barrier coatings, air intake and cowlings; creating coherent, accelerated airflow to pass through/within a ringed shaped, diverging converging Vertical Axis Vertical Airflow Nozzle and Turbine (VAVANT); airflow causes rotation of VAVANT, and summation of torque forces at VAVANT hub, shaft, gearbox, and power head, generate EMF, and electrical power.