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

Contents 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

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

Manzanares power plant

different part of power plant Methodology 3-D solar chimney power plant- five degree model Dimensions of modeled power plant dimensions (m) different part of power plant 195 chimney height 5 chimney radius 120 collector radius 1.7 collector height 10 height of turbine location depth of ground

Methodology Comparison between present works and pastor’s Source term (W⁄m2) in the ground instead of solar radiation

Methodology Reynolds average Navier Stoks equation Bousinesq approximation model k-ε realize

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

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

Results Power Plant with Different Dimensions P=η ΔPtt V

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

Results Power Plant in Several Months of a Year

simulation of Manzanares plant Manzanares solar chimney power plant Conclusion case simulation of Manzanares plant Manzanares solar chimney power plant Power output(kw) 43.57 43.69 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

THANKS A LOT FOR YOUR ATTENTION

Results Power Plant with Different Dimensions

Results Power Plant in Several Months of a Year

Results Power Plant in Several Months of a Year

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

Measured data from manzanares prototype