1. SOLAR WATER HEATING
DOMESTIC SOLAR WATER HEATER
ABDULAZIZ SHALU
FIRAS MOWAD

2. JAZAN
UNIVERSITY
College of engineering
Mechanical department
Renewable energies course

3. No cost?
• Depending on sun thermal heat
• You can get as much sun as you want
• All year free

4. Energy generated
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180
january february march april may june july august september october november december
Equivalent
energy
(KWh)
month
System energy

5. So, what is that?
• Solar water heating uses sun heat to
warm water .
• Two types : active or passive.
• Heat water up to 60 – 80 degree
cellulose.
• Expected Lifetime of 20 years .
• Good home investment.

6. But how dose it work?

7. What if the sun goes missing?
• Well, these systems are equipped
with backup electrical heater.
0
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energy
(KWh)
month
energy and load in one year
System energy Electricity load

8. Solar water heating configuration
hot water drawn over an hour
mathematical models that
represent the atmospheric
behavior
fraction of sunlight that is
diffusely reflected
Sun absorbing area
Hot water usage
Use libraries

9. Solar water heating configuration
Select your collector type
Heat exchanger
For forced circulation

10. Lifetime and degradation
Decline in system output / year

11. Electric load
Energy usage profile

12. Outcomes
SIMULATED BY SYSTEM ADVISOR MODEL (SAM)

13. summary
Metric Value
Annual AC energy saved (year 1) 1,527 kWh
Solar fraction (year 1) 0.87
Aux with solar (year 1) 76.0 kWh
Aux without solar (year 1) 1,745.9 kWh
Capacity factor (year 1) 7.90%
LCOE Levelized cost of energy
nominal
48.63 ¢/kWh
LCOE Levelized cost of energy real 40.56 ¢/kWh
Electricity bill without system (year 1) $1,514
Electricity bill with system (year 1) $1,336
Net savings with system (year 1) $178
Net present value ($3,680)
Simple payback period NaN
Discounted payback period NaN
Net capital cost $6,724
Equity $2,690
Debt $4,035

14. Annual energy
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JANUARY
FEBRUARYM ARCH APRIL M AY JUNE JULY AUGUST
SEPTEMBER
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NOVEM BER
DECEMBER
generated
enrgy
(KWh)
months
SYSTEM GENERATED ENERGY

15. Hourly energy generated
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
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Axis
Title
Axis Title
System power generated (kW)

16. Market
share

17. Thank
you
Any question?