This document discusses solar thermal systems and their design and applications in the United Arab Emirates. It provides information on Viessmann as a company and manufacturer of solar thermal collectors and systems. It then covers topics such as solar energy resources in the UAE, types of solar thermal collectors produced by Viessmann, system design considerations, examples of large scale solar thermal installations in the UAE, and the importance of good engineering design and installation for solar energy systems.
Heat recovery ventilation is a means of energy conversation in buildings. Because of reducing ventilation exhaust air, can play a good role in the effectiveness of ventilation to reduce energy use. As building efficiency is improved with insulation and weather stripping, buildings are intentionally made more airtight, and consequently less ventilated. Since all buildings require a source of fresh air, the need for HRVs has become obvious.
Heat recovery ventilation is a means of energy conversation in buildings. Because of reducing ventilation exhaust air, can play a good role in the effectiveness of ventilation to reduce energy use. As building efficiency is improved with insulation and weather stripping, buildings are intentionally made more airtight, and consequently less ventilated. Since all buildings require a source of fresh air, the need for HRVs has become obvious.
SOLAR POWER generation using solar PV and Concentrated solar power technologyPraveen Kumar
Concentrated Solar Power Technology
Power Tower Systems
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A solar cooker is a device which is used to cook food by utilizing the heat energy radiated by the sun.
It utilizes the principle of reflection, concentration, absorption and greenhouse effect to convert sunlight to heat energy.
Most common, inexpensive and easier to build
A solar cooker consists of an insulated metal box or wooden box which is painted all black from inside.
HVAC is typically responsible for around 40% of the energy consumption in a building. Frequently, this is the largest energy consuming type of equipment on a site and can therefore provide significant scope for saving energy and money. This fact sheet covers common types of HVAC and will guide you in the right direction to identify energy efficient HVAC initiatives.
solar water heating system - types and mechanismlee shin
solar is one of the trending technology getting into use which reduces the utility bills and bring more beneficial factor through its eco friendly method
This new minute lecture gives an introduction to photovoltaic (PV) systems for residential use, providing an answer to following questions:
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This Webinar will present the current status and predictive ability for the power loss of PV modules for specific failure modes. The team describes PV module material interactions and incompatibilities among encapsulation materials and lamination processes so as to better understand PV module failures mechanism.
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Solar Photovoltaic(SPV) systems
Solar thermal energy is a great source of electricity and other energy which have great utility in day to day life. Learn about the solar energy in details here.
Solar thermal power generation systems use mirrors to collect sunlight and produce steam by solar heat to drive turbines for generating power. This system generates power by rotating turbines like thermal and nuclear power plants, and therefore, is suitable for large-scale power generation.
SOLAR POWER generation using solar PV and Concentrated solar power technologyPraveen Kumar
Concentrated Solar Power Technology
Power Tower Systems
Parabolic Trough Systems
Solar Dish Systems
Compact Linear Fresnel
Types, working, pros &cons
Scope in INDIA
Using Photo-Voltaic cells
-Working of PV Cells
-Considering different PV materials
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-A view of different inverter topologies used
pyrheliometer
A solar cooker is a device which is used to cook food by utilizing the heat energy radiated by the sun.
It utilizes the principle of reflection, concentration, absorption and greenhouse effect to convert sunlight to heat energy.
Most common, inexpensive and easier to build
A solar cooker consists of an insulated metal box or wooden box which is painted all black from inside.
HVAC is typically responsible for around 40% of the energy consumption in a building. Frequently, this is the largest energy consuming type of equipment on a site and can therefore provide significant scope for saving energy and money. This fact sheet covers common types of HVAC and will guide you in the right direction to identify energy efficient HVAC initiatives.
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solar is one of the trending technology getting into use which reduces the utility bills and bring more beneficial factor through its eco friendly method
This new minute lecture gives an introduction to photovoltaic (PV) systems for residential use, providing an answer to following questions:
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* What can be expected from a PV system?
* What types of systems are available?
* How is technology expected to evolve?
Assessment of Photovoltaic Module Failures in the FieldLeonardo ENERGY
This Webinar will present the current status and predictive ability for the power loss of PV modules for specific failure modes. The team describes PV module material interactions and incompatibilities among encapsulation materials and lamination processes so as to better understand PV module failures mechanism.
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Solar thermal energy is a great source of electricity and other energy which have great utility in day to day life. Learn about the solar energy in details here.
Solar thermal power generation systems use mirrors to collect sunlight and produce steam by solar heat to drive turbines for generating power. This system generates power by rotating turbines like thermal and nuclear power plants, and therefore, is suitable for large-scale power generation.
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FUNDAMENTAL CONCEPT OF RENEWABLE, NON-RENEWABLE ENERGY, RESOURCES OF ENERGY, SOLAR ENERGY, WIND ENERGY, TIDAL ENERGY, GEOTHERMAL ENERGY, BIOMASS ENERGY, OCEAN ENERGY , FREE ENERGY, APPLICATIONS OF RENEWABLE
1. Solar Thermal Systems
Design and Applications in the
United Arab Emirates
Murat Aydemir
Murat Aydemir Viessmann Middle East
Viessmann Middle East FZE
Managing Director (M.Sc. Mech.Eng., ASHRAE)
Dubai 20.04.2009
Solar Energy
3. Viessmann Werke
Founded: 1917
Headquarters: Allendorf (Eder) GER
Products: Comprehensive
product range
heating- and climate-
technology
Employees: 8.600
Turn-over: 1,7 Bil. Euro
Murat Aydemir Viessmann Middle East
Export Share: 60 %
Dubai 20.04.2009
Third generation family-owned enterprise
Solar Energy
Among the Top 3 of industry
www.viessmann.com
5. Comprehensive product range
For all energy sources and all output ranges - 1.5 kW to 20 MW in three program levels
1,5 kW – 20.000 kW
Oil Natural Solar Bio Natural
Gas Energy Heat
Energy sources: Oil, natural gas, solar, bio energy (wood, biogas),
natural heat
Murat Aydemir Viessmann Middle East
Output range: 1,5 kW to 20.000 kW
Range categories: 100 Plus, 200 Comfort, 300 Excellence
System solutions: Integrated system components
Dubai 20.04.2009
Solar Energy
6. Viessmann has system solutions for heating,
hot water, steam and solar energy applications in
housing and commercial projects
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
7. Solar Energy – The power source of the
earth
In less than four hours the sun radiates the annual
energy demand of the world’s population to the earth.
Annual
Solar Radiation
on Earth
Murat Aydemir Viessmann Middle East
Annual Energy
Consumption
Estimated Fossil Fuel on Earth
Dubai 20.04.2009
Solar Energy
Sources
8. Solar radiation on the Earth
1360 W/m2
1000 W/m2
Atmosphere
Solar Energy
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
9. Solar energy
Annual energy amount (global radiation)
Country City Annual energy amount
kWh / m2 x year
UAE Dubai 2027
Saudi Arabia Riyadh 1873
Murat Aydemir Viessmann Middle East
Jordan Amman 1870
Syria Damascus 1862
Lebanon Beirut 1734
Dubai 20.04.2009
Italy Milano 1241
Solar Energy
France Paris 1127
Germany Frankfurt 1087
UK London 899
10. Solar radiation on the Earth
Utilisation of solar energy in the collectors Output / losses
A diffused radiation
B direct solar radiation
C wind, rain, snow, convection
D convection losses
E thermal conduction losses
F heat radiated by the absorber
G heat radiated by the glass
cover
H useful collector output
K reflection
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
-Diffuse radiation of
Solar Energy
UAE is more than 40 %
Daily energy values irradiated onto the
horizontal plane over a 12 month period
11. Solar Energy related to buildings
→ Heat
→
Electricity
(direct with PV)
→ Solar lighting
→
Concentrated
Murat Aydemir Viessmann Middle East
Solar Power → Bio Fuels
Dubai 20.04.2009
Solar Energy
12. Solar energy related to buildings
What can we do with the heat?
→ Heat
- Domestic hot water >80%
- Pool heating
- Heating support in cold climates
- Process heat
- Solar cooling with absorption
Murat Aydemir Viessmann Middle East
chillers
- Solar desalination
Dubai 20.04.2009
Solar Energy
13. Solar-thermal: Heat through sunshine
Murat Aydemir Viessmann Middle East
Vitosol 100/200-F Vitosol 200-T Vitosol 300-T
Flat tube tube-heat pipe
Dubai 20.04.2009
Solar Energy
14. Vitosol 200-F
Flat collector
All round folded aluminium
frame
Stable, highly transparent
cover made from special
glass
“S” patterned copper
absorber
Highly effective thermal
Murat Aydemir Viessmann Middle East
insulation
Dubai 20.04.2009
Solar Energy
15. Vitosol 200-T
Evacuated tube collector with copper absorber, direct flow
Highly effective thermal
insulation
Coaxial distributor pipe
Header
Direct flow Sol-titanium
coated absorber
Murat Aydemir Viessmann Middle East
High grade, low ferrous
glass
Dubai 20.04.2009
Solar Energy
16. Vitosol 300-T
Evacuated tube collector with copper absorber, heat pipe technology
Highly effective thermal
insulation
“Dry” connection, no direct
contact between carrier and
heat transfer medium
High grade, low ferrous
glass
Duotec twin-pipe heat
exchanger with integral
overheating protection
Murat Aydemir Viessmann Middle East
Heat pipe
Sol-titanium coated
absorber
Dubai 20.04.2009
Solar Energy
17. Solar Thermal Collector efficiency
0,90
0,80
0,70
0,60
EFFICIENCY
0,50
0,40
0,30
Murat Aydemir Viessmann Middle East
Solar heating system for DHW Vitosol 200-T SD2A 2 sqm
0,20
Vitosol 200-T SD2A 3 sqm
Solar heating system for DHW and
central heating back-up Vitosol 100 F
0,10
Dubai 20.04.2009
Vitosol 200 F
Solar heating system for generating
Solar Energy
process heat / solar air conditioning Vitosol 300 F
0,00
0 10 20 30 40 50 60 70 80 90 100
Temperature difference K
18. Life expectations of solar collectors
20 years +
Solar Energy
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
19. 30 years
Life expactations of solar collectors
35 years
Solar Energy
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
20. Certificates of solar collectors
Performance & Reliability Test reports according to EN 12975
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
21. Solar thermal hot water generation
Solar Energy
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
22. Design of a solar thermal system for DHW
1 – Solar collectors, Vitosol
2 – pumping station –
Divicon and accessories
3 – Dual mode or multi
1 mode DHW cylinder
4 – Control unit – Vitosolic
4 5 – Back-up system –
oil/gas boiler, electrical or
Murat Aydemir Viessmann Middle East
heat pump
2
Dubai 20.04.2009
5
Solar Energy
3
23. Design of a solar thermal system for DHW
• Planning data
• Basic information
• DHW cylinder volume
• Absorber surface area
• Pipe sizing
• Circulation pump (Solar Divicon) sizing
• Expansion vessel sizing
Murat Aydemir Viessmann Middle East
• Vitosol control unit
Dubai 20.04.2009
Solar Energy
24. Design of a solar thermal system for DHW
Basic information for a single house 120 m2
Consumption
A – Room heating requirement
of a building
B – Room heating requirement
of a low-energy house
C – Hot water required
Gain
D – Solar energy yield with 5 m²
of absorber surface area
Murat Aydemir Viessmann Middle East
E – Solar energy yield with 15
m² of absorber surface area
Dubai 20.04.2009
Solar Energy
25. Design of a solar thermal system for DHW
Basic information
The solar system has
to be selected for the
maximum energy level
The solar system
cannot cover 100% of
the consumption
Realistic value is
Murat Aydemir Viessmann Middle East
60-70 % of annual
energy demand
Dubai 20.04.2009
Solar Energy
26. Design of a solar thermal system for DHW
Sample: Buffer tank for solar thermal system – 10000 l/pers/day
Energy needs to be
stored => Daily buffer
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
27. Design of a solar thermal system for DHW
Hot water demand calculation
Max 50 l/pers/day at 60oC
or
70 l/pers/day at 45oC
Murat Aydemir Viessmann Middle East
Sample:
Dubai 20.04.2009
Solar Energy
4 pers x 50 l/pers/day = 200 l/day at 60oC or 280 l/day at 45oC
28. Design of a solar thermal system for DHW
Absorber surface area
Solar radiation ~1000 W/m2
If sun is shinning for 6 – 7 hours/day =>
Daily maximum gain 6 – 7 kWh/m2
The DHW temperature 60oC/10oC
The DHW flow: 6/50 = 0.12 m3/(h x m2)
100 l of DHW at 60oC per m2 of collector
Murat Aydemir Viessmann Middle East
In our case:
Dubai 20.04.2009
Solar Energy
400 l/day / 100 l/m2 = 4 m2 => 2 collectors Vitosol 200F
29. Thumb rules
DHW demand: 50 l/pers/day at 60oC
Collector area: 1 m2 at 100 l of DHW at 60oC
Buffer tank: 50 l/m2 of absorber area
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
30. Solar simulation
Solar simulation software
Solar Energy
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
31. Large scale solar thermal, Example for a
10000 liter/day hot water system
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
32. Large scale solar thermal, Example for a
10000 liter/day hot water system
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
33. Large scale solar thermal, Example for a
10000 liter/day hot water system
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
34. Solar hot water generation
closed loop- open loop differences
Closed loop Thermosiphon
Thermosiphon is the easiest solution:
Murat Aydemir Viessmann Middle East
No power supply, no pump, no control, works everywhere
Advantages of closed loop system:
No tank on collector, architecturally better installation
Dubai 20.04.2009
Hot water resirculation possible, less water losses, no problems
Solar Energy
with low water quality
Better control, higher efficiency, no over night cooling losses
Best for large scale solar systems
35. Example: Selection of a Solar cooling system in UAE
Hot water (Solar panel):
flow rate: 32.5 l/sec
Temperature: 115 / 103 C
Capacity: 1590 kW
Cooling water:
flow rate: 110.0 l/sec
Temperature: 38 / 43.6 C
Capacity: 2578 kW
Chilled water:
Flow rate: 48.0 l/sec
Temperature: 12 / 7 deg C
Murat Aydemir Viessmann Middle East
Capacity: 1000 kW
Dubai 20.04.2009
Solar Energy
36. Case study –
Installation examples
Green Building, Manchester
Solar Energy
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
38. Installation examples
Vacuum tube
collectors on a
vertical surface
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
39. Installation examples
Solar panels as shading elements for the building
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
40. Installation examples in UAE
Jebel Ali Process heating system
Solar Absorber gross surface area : 300 m2
Energy produced by collectors : 376,4 MWh/year
Diesel savings : 48 100 liters/year.
CO2 emissions avoided : 132 500 kg
Application0 : Process heat for hot water loop at
manufacturing plant
Murat Aydemir Viessmann Middle East
Installed by Value Addition FZE
Dubai 20.04.2009
Solar Energy
41. Installation examples in UAE
Jebel Ali Process heating system
Solar Energy
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
42. Installation examples in UAE
Palm Jumeirah Residential buildings solar hot water
system
Solar Absorber gross surface area :
14 x 200 m2 (2800 m2)
Energy produced by collectors : 3805 MWh/year
Natural gas savings : 471000 m3/year.
CO2 emissions avoided : 1 070 000 kg
Backup system Gas fired wall hung condensing boilers
Murat Aydemir Viessmann Middle East
Installed by Value Addition FZE
Dubai 20.04.2009
Solar Energy
43. Installation examples in UAE
Palm Jumeirah Solar Energy System
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
Viessmann Flat Solar Thermal Panels with original support
system and connection pipes
44. Installation examples in UAE
Palm Jumeirah Solar Energy System
Murat Aydemir Viessmann Middle East
Viessmann Gas condensing
Dubai 20.04.2009
boilers for the backup of the
Solar Energy
system (109 % efficiency)
Viessmann Domestic Hot Water
cylinders
45. Installation examples in UAE
Solar Energy System for villa’s in Jumeirah
Solar hot water
system with
electric backup
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
Viessmann Domestic Hot Water
cylinders
46. Installation examples in UAE
Al Quoz Solar Energy System labour camp
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy
Operational since 2000
47. Solar energy needs good engineering design
and installation to reach the goal !
Murat Aydemir Viessmann Middle East
Together with the design of renewables check
the energy saving potential !
Dubai 20.04.2009
Solar Energy
Saving + renewable = Target
48. Vitocal 160-A
Air source heat pump for DHW heating 1,52 kW, 285 liters
Sample Calculation: 300liters/day hot water
1. Electrical heater
Q = 300 x (60-10)/860 = 17,5 kW
Daily loss 1 kW
Electric consumption: 18,5 kW
2. Vitocal cylinder with heat pump
Q = 18,44 kW required electricity 5,2 kW
Cooling inside approx 17 kW
Saving at the AC of housing
5,7 kW
Murat Aydemir Viessmann Middle East
Electric consumption:
5,7-5,2 = - 0,5 kW
SAVING = 18,5 +0,5 = 19 kW
Dubai 20.04.2009
Solar Energy
Annual expected saving 6840 kWh
(Max connected electrical load 500 W)
49. Vitocal 160-A in combination with solar energy
Max electrical load 500 W for a villa instead of 5-6 kW
of electrical heaters
Murat Aydemir Viessmann Middle East
Dubai 20.04.2009
Solar Energy