AEROSPACE ENGINEERING LABORATORY (MAE308)

PROF. SEUNG WOOK BAEK DIV. OF AEROSPACE ENGINEERING, KAIST, IN KOREA

ROOM: Building N7-2 #3304 TELEPHONE : 3714 swbaek@kaist.ac.kr http://procom.kaist.ac.kr

TA : Dong-il Lee ROOM: Building N7-2 #3315 TELEPHONE : 3754 dilee@kaist.ac.kr

PROF. SEUNG WOOK BAEK DIV. OF AEROSPACE ENGINEERING, KAIST, IN KOREA

ROOM: Building N7-2 #3304 TELEPHONE : 3714 swbaek@kaist.ac.kr http://procom.kaist.ac.kr

TA : Dong-il Lee ROOM: Building N7-2 #3315 TELEPHONE : 3754 dilee@kaist.ac.kr

CONTENTS

1. Research Background

2. Research Objectives

3. Research Methods

4. Results

PROPULSION AND COMBUSTION LABORATORY AEROSPACE ENGINEERING LABORATORY

MAE 308

Development of hybrid device for photovoltaic powergeneration and heating

Research Background

AEROSPACE ENGINEERING LABORATORYPROPULSION AND COMBUSTION LABORATORY

MAE 308

Renewable EnergyFossil Fuel

Research Background

AEROSPACE ENGINEERING LABORATORYPROPULSION AND COMBUSTION LABORATORY

MAE 308

Relative solar insolationRelative solar insolation

World Solar Insolation ValuesWorld Solar Insolation Values

Research Background

AEROSPACE ENGINEERING LABORATORYPROPULSION AND COMBUSTION LABORATORY

MAE 308

Solar Cell Solar Heat

Research Background

MAE 308

Concentrated Photovoltaic(CPV)Concentrated Photovoltaic(CPV)

Light concentration (x400~600) High power generating efficiency

1. To increase the generating efficiency of CPV

2. To extract thermal energy from a CPV device

Research Objectives

PROPULSION AND COMBUSTION LABORATORY AEROSPACE ENGINEERING LABORATORY

MAE 308

Schematic diagram of a heating system using CPV devices

PROPULSION AND COMBUSTION LABORATORY AEROSPACE ENGINEERING LABORATORY

MAE 308

Insulated thermal absorber with a CPV deviceInsulated thermal absorber with a CPV device

Research Methods

MAE 308

2

2 1out in

RV V

R R

Brightness of lightResistance of

R1

Vout

Bright Decrease Increase

Dark Increase Decrease

•A, B: Azimuthal angle detection sensor

•C, D: Elevation angle detection sensortand

H 0.003

0.176tan1 0.017o

dH m

Research Methods

Solar tracking deviceSolar tracking device

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

2 ( )p out inQ mC T T

P V I

(1) : Total energy

(2) : Maximum power

1

100(%)elec

Pn

Q

(4) : Electrical efficiency

2

1

100(%)th

Qn

Q

(5) : Thermal efficiency

"1 0Q = irrA CR q

(3) : Collected heat

:CR Concentration ratio※" :irrq Energy

density:oA Cell area

: Lens transmissivity

: Cell absorptivity

PROPULSION AND COMBUSTION LABORATORY AEROSPACE ENGINEERING LABORATORY

MAE 308

THE END.

THANK YOU !

THE END.

THANK YOU !