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Simulation of flow and heat transfer in 3D solar chimney power plants-numerical analysis 1/14 Jordan International Energy Conference 2011 Amman IN THE NAME OF GOD Vali Kalantar By:Maryam Zare

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Contents 2/14 Introduction Experimental Manzanares power plant Methodology Prototype and dimensions of modeled power plant Comparison with pervious work Equations Grid and boundary conditions Results Power Plant with Different Dimensions Power Plant in Several Months of a Year Conclusion and Future Interests

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Introduction 3/14 Energy supply of earth Solar chimney power plant Chimney Collector Turbine Water tube

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Manzanares power plant 4/14

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Methodology 5/14 3-D solar chimney power plant- five degree model Dimensions of modeled power plant

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Methodology 6/14 Comparison between present works and pastors Source term (W m 2 ) in the ground instead of solar radiation

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Bousinesq approximation model k- realize Reynolds average Navier Stoks equation Methodology 7/14

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Methodology 8/14 numerical CFD program tetrahedral grids hanging node adaption along with boundary daption, volume adaption and y+ adaption geographical data of Yazd surface type value power plant inlet pressure inlet p=0 (pa) & T=300 (k) power plant outlet pressure outlet p=0 (pa) & T=300 (k) chimney wall opaque wall q=0 (w/m2) bendopaque wallq=0 (w/m2) collector semi-transparent wall solar load model ground surface opaque wall coupled 5 meter under the ground opaque wall T=300 (k) Two side wallssymmetry-------- turbinePressure jumpBeetz power limit boundary conditions

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Results Power Plant with Different Dimensions 9/14 High chimney: chimney height=400(m) Big collector: collector radius=240(m) Short chimney: chimney height=100(m) Small collector: collector radius=60(m)

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Results Power Plant with Different Dimensions 10/14 P= P tt V

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Results Power Plant in Several Months of a Year 11/14 five different months (first, forth, sixth, eighth and eleventh month) unsteady simulation during a year

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Results Power Plant in Several Months of a Year 12/14

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Conclusion 13/14 casesimulation of Manzanares plant Manzanares solar chimney power plant Power output(kw)43.5743.69 insolation on collector equal to 996 (w/m2) Future Interests time-dependent calculations improve physical models for the turbine larger dimensions or full 360 degree model other parameters

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14/14 THANKS A LOT FOR YOUR ATTENTION

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15 Results Power Plant with Different Dimensions

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16 Results Power Plant in Several Months of a Year

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17 Results Power Plant in Several Months of a Year

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18 Velocity vectors at iterance, middle and end of the collector Velocity vectors at middle and end of the chimney

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Measured data from manzanares prototype 19