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Scientific Publications Year 2004 for Solar Updraft Chimneys SCPP

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Scientific Publications
Title - Author – Reference - Abstract


2004 H.-J. Niemann, R. Höffer: Wind Loading for the Design of the Solar Tower

PDF Document of 0.2Mo

2004 WW Stinnes: GREENTOWER stops climate change by CO2 sequestration

PDF Document of 0.3Mo

2004 WW Stinnes: GREENTOWER: performances guarantees through insurance policies

PDF Document of 1Mo

2004 Martin H THOMAS, Roger C DAVEY: The solar tower: large-scale renewable energy power station development

PDF Document of 0.5Mo


2004 Mills
Advances in solar thermal electricity technology

PDF Document 0.8 Mo


2004 Schlaich
Design of Commercial Solar Updraft Tower Systems – Utilization of Solar Induced Convective Flows for Power Generation

PDF Document 0.5 Mo


2004 T. W. von Backström, A. J. Gannon
Solar chimney turbine characteristics

PDF Document 1.1 Mo
Solar Energy, Volume 76, Issues 1-3, January-March 2004, Pages 235-241
Abstract
A typical layout of a solar chimney power plant has a single axial turbine with radial inflow through inlet guide vanes at the base of the chimney. Turbine efficiency depends on the turbine blade row and turbine diffuser loss coefficients. The paper presents analytical equations in terms of turbine flow and load coefficient and degree of reaction, to express the influence of each coefficient on turbine efficiency. It finds analytical solutions for optimum degree of reaction, maximum turbine efficiency for required power and maximum efficiency for constrained turbine size. Characteristics measured on a 720 mm diameter turbine model confirm the validity of the analytical model. Application to a proposed large solar chimney plant indicates that a peak turbine total-to-total efficiency of around 90% is attainable, but not necessarily over the full range of plant operating points.
Article Outline
Nomenclature
1. Introduction
2. Assumptions
3. Turbine efficiency
4. Velocity diagrams
5. Degree of reaction in solar chimney turbines
6. Loss fraction, L in terms of φ, ψ and R
7. Optimum R for minimum loss
8. Optimum turbine design point for required power
9. Optimum ψ for minimum loss at given φ and R
10. Off-design performance
11. Conclusions
References



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