lecture on thermal energy systems and storge for sustainable development of the world

TES

1. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 1Autumn Semester
Solar Thermal Energy Conversion
Lecture #11

2. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 2Autumn Semester
•Material having very small or zero band gap energy are required
•All the energy of the incoming photon should get converted to
kinetic energy  high thermal velocity  greater collision loss
of energy as heat  radiation to heat conversion takes place
•Metal are suitable as an absorber
METAL
Solar to thermal energy
conversion
Solar thermal energy conversion: Principle

3. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 3Autumn Semester
Light to heat conversion
device, an absorber
Heat transferred to a
fluid (water, air, oil)
Used for desired
application, heating,
distillation, etc.
Heat storage
medium (sensible,
latent)
Used at desired time
and for desired
application
Solar radiation
Solar Thermal energy conversion: Principle

4. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 4Autumn Semester
Solar radiation as thermal energy

5. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 5Autumn Semester
Solar radiation as thermal energy

6. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 6Autumn Semester
Solar radiation as thermal energy

7. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 7Autumn Semester
_
_
Conductive loss
Radiative loss
4
TAQ
rad
Energy balance
x
T
AKwattQ
cond

)(
.
PG
incident
AI
E 
TAhQ
conv

Convective loss
AIR

8. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 8Autumn Semester
Solar radiation as thermal energy

9. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 9Autumn Semester
Thermosyphon

10. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 10Autumn Semester
Thermosyphon

11. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 11Autumn Semester
Thermosyphon

12. IIT Bombay
DESE
Lecture 11: EN 601: Solar thermal energy conversion Slide 12Autumn Semester
Warm water
for usesolar radiation
Tank
insulation
inlet
glass cover
outlet
make-up
cold waterwater channel
absorber