Download MAE 308 Results

AEROSPACE ENGINEERING
LABORATORY (MAE308)

PROF. SEUNG WOOK BAEK


ROOM: Building N7-2 #3304
TELEPHONE : 3714
[email protected]
http://procom.kaist.ac.kr

TA : Dong-il Lee

ROOM: Building N7-2 #3315
TELEPHONE : 3754
[email protected]




 DIV. OF AEROSPACE ENGINEERING, KAIST, IN KOREA
MAE 308
Development of hybrid device for photovoltaic power
generation and heating
CONTENTS
1. Research Background
2. Research Objectives
3. Research Methods
4. Results
PROPULSION AND COMBUSTION LABORATORY
AEROSPACE ENGINEERING LABORATORY
MAE 308
Research Background
Fossil Fuel
PROPULSION AND COMBUSTION LABORATORY
Renewable Energy
AEROSPACE ENGINEERING LABORATORY
MAE 308
Research Background
Relative solar insolation
World Solar Insolation Values
PROPULSION AND COMBUSTION LABORATORY
AEROSPACE ENGINEERING LABORATORY
MAE 308
Research Background
Solar Cell
PROPULSION AND COMBUSTION LABORATORY
Solar Heat
AEROSPACE ENGINEERING LABORATORY
MAE 308
Research Background
Concentrated Photovoltaic(CPV)


Light concentration (x400~600)
High power generating efficiency
MAE 308
Research Objectives
1. To increase the generating efficiency of CPV
2. To extract thermal energy from a CPV device
Schematic diagram of a heating system using CPV devices
PROPULSION AND COMBUSTION LABORATORY
AEROSPACE ENGINEERING LABORATORY
MAE 308
Research Methods
Insulated thermal absorber with a CPV device
PROPULSION AND COMBUSTION LABORATORY
AEROSPACE ENGINEERING LABORATORY
MAE 308
Research Methods
Solar tracking device
Vout 
R2
 Vin
R2  R1
Brightness of light
Resistance of
R1
Vout
Bright
Decrease
Increase
Dark
Increase
Decrease
•A, B: Azimuthal angle detection sensor
tan  
d
H
H
d
0.003

 0.176m
o
tan1
0.017
•C, D: Elevation angle detection sensor
MAE 308
Results
Transient motion of the heating device as a function of time
MAE 308
Results
Comparison of the actual values obtained from KASSI with experimental data
•KASSI: Korea Astronomy and Space Science Institute
•KAIST: Korea Advanced Institute of Science and Technology
MAE 308
Results
Electrical and thermal efficiencies of the CPV and thermal absorber as a function of solar time
(1) : Total energy
Q1 =    A0  CR  q"irr
(2) : Maximum power
P V  I
(3) : Collected heat
Q2  mC p (Tout  Tin )
(4) : Electrical efficiency
nelec 
※
"
CR : Concentration ratio q irr : Energy density
:
Lens transmissivity
 : Cell absorptivity
P
100(%)
Q1
(5) : Thermal efficiency
Ao :
Cell area
nth 
Q2
100(%)
Q1
MAE 308
THE END.
THANK YOU !
PROPULSION AND COMBUSTION LABORATORY
AEROSPACE ENGINEERING LABORATORY