Jordan International Energy Conference 2011 Amman

Simulation of flow and heat transfer in 3D solar chimney power plants-numerical analysis1/14Jordan International Energy Conference 2011 AmmanIN THE NAME OF GODVali Kalantar By:Maryam ZareContents2/14IntroductionExperimental Manzanares power plantMethodology Prototype and dimensions of modeled power plant Comparison with pervious work Equations Grid and boundary conditionsResults Power Plant with Different Dimensions Power Plant in Several Months of a YearConclusion and Future Interests

Introduction3/14Energy supply of earth Solar chimney power plant

ChimneyCollectorTurbineWater tube

Manzanares power plant

4/14

Methodology5/143-D solar chimney power plant- five degree model

dimensions (m)different part of power plant195chimney height5chimney radius120collector radius1.7collector height10height of turbine location5depth of groundDimensions of modeled power plant

Methodology6/14Comparison between present works and pastorsSource term (Wm2) in the ground instead of solar radiationBousinesq approximationmodel k- realizeReynolds average Navier Stoks equationMethodology7/14

7Methodology8/14numerical CFD programtetrahedral gridshanging node adaption along with boundary daption, volume adaption and y+ adaptiongeographical 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) bend opaque wall q=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 walls symmetry -------- turbine Pressure jump Beetz power limit boundary conditions ResultsPower Plant with Different Dimensions9/14High chimney: chimney height=400(m)Big collector: collector radius=240(m)Short chimney: chimney height=100(m)Small collector: collector radius=60(m)

ResultsPower Plant with Different Dimensions10/14P= Ptt V ResultsPower Plant in Several Months of a Year11/14five different months (first, forth, sixth, eighth and eleventh month)unsteady simulation during a year ResultsPower Plant in Several Months of a Year12/1412Conclusion13/14casesimulation of Manzanares plantManzanares solar chimney power plant Power output(kw)43.5743.69insolation on collector equal to 996 (w/m2)Future Intereststime-dependent calculationsimprove physical models for the turbinelarger dimensions or full 360 degree modelother parameters

1314/14THANKS A LOT FOR YOUR ATTENTION15ResultsPower Plant with Different Dimensions16ResultsPower Plant in Several Months of a Year17ResultsPower Plant in Several Months of a Year18

Velocity vectors at iterance, middle and end of the collectorVelocity vectors at middle and end of the chimneyMeasured data from manzanares prototype19