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
Slide 2
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
Slide 3
Introduction 3/14 Energy supply of earth Solar chimney power
plant Chimney Collector Turbine Water tube
Slide 4
Manzanares power plant 4/14
Slide 5
Methodology 5/14 3-D solar chimney power plant- five degree
model Dimensions of modeled power plant
Slide 6
Methodology 6/14 Comparison between present works and pastors
Source term (W m 2 ) in the ground instead of solar radiation
Slide 7
Bousinesq approximation model k- realize Reynolds average
Navier Stoks equation Methodology 7/14
Slide 8
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
Slide 9
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)
Slide 10
Results Power Plant with Different Dimensions 10/14 P= P tt
V
Slide 11
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
Slide 12
Results Power Plant in Several Months of a Year 12/14
Slide 13
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
Slide 14
14/14 THANKS A LOT FOR YOUR ATTENTION
Slide 15
15 Results Power Plant with Different Dimensions
Slide 16
16 Results Power Plant in Several Months of a Year
Slide 17
17 Results Power Plant in Several Months of a Year
Slide 18
18 Velocity vectors at iterance, middle and end of the
collector Velocity vectors at middle and end of the chimney