Presentation Title

Analysis of Turbines for Solar Updraft Tower Renewable Energy

Faculty Mentor

Kevin R Anderson

Start Date

17-11-2018 8:30 AM

End Date

17-11-2018 10:30 AM

Location

HARBESON 48

Session

POSTER 1

Type of Presentation

Poster

Subject Area

engineering_computer_science

Abstract

Solar Updraft Towers (SUT) uses low temperature solar heat to heat the air beneath a greenhouse-like collector region that surrounds a very tall chimney tower. The natural convention updraft set up by the solar chimney causes an airflow that drives a turbine. This paper considers the use of compost waste heat (CWH) in energy production of SUT. Previous research and presentations showcased the validity of using CHW harvesting to enhance SUT power output. The current presentation focuses on the turbine technology needed to convert the upstream kinetic energy of the turbine into electrical energy. Turbines in SUT are located at the base of the chimney mounted on the roof of a solar greenhouse. They are to be baselined as a pressure shrouded turbine with a single stage to minimize pressure drop losses. The turbine looks much like a “whole-house-fan”, i.e. a large diameter fan with 5 blades. The presentation will show thermodynamic modeling results of the turbine. Various design parameters of the turbine construction such as pitch of the blades, number of blades and bearing selection will be outlined in the presentation. An efficiency metric is also formulated and presented in the study in order to quantify the effect of the turbine’s effect on the energy generation in the SUT.

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Nov 17th, 8:30 AM Nov 17th, 10:30 AM

Analysis of Turbines for Solar Updraft Tower Renewable Energy

HARBESON 48

Solar Updraft Towers (SUT) uses low temperature solar heat to heat the air beneath a greenhouse-like collector region that surrounds a very tall chimney tower. The natural convention updraft set up by the solar chimney causes an airflow that drives a turbine. This paper considers the use of compost waste heat (CWH) in energy production of SUT. Previous research and presentations showcased the validity of using CHW harvesting to enhance SUT power output. The current presentation focuses on the turbine technology needed to convert the upstream kinetic energy of the turbine into electrical energy. Turbines in SUT are located at the base of the chimney mounted on the roof of a solar greenhouse. They are to be baselined as a pressure shrouded turbine with a single stage to minimize pressure drop losses. The turbine looks much like a “whole-house-fan”, i.e. a large diameter fan with 5 blades. The presentation will show thermodynamic modeling results of the turbine. Various design parameters of the turbine construction such as pitch of the blades, number of blades and bearing selection will be outlined in the presentation. An efficiency metric is also formulated and presented in the study in order to quantify the effect of the turbine’s effect on the energy generation in the SUT.