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In the name of the ALLAH , the most beneficent , the most merciful
Design of parabolic trough solar collectors power plant with storage
system
Aim of project
The main purpose of this project is to design of a
parabolic trough solar thermal power plant with
capacity of 100MW and evaluate its performance at
different weather conditions
Advantages of the renewable energy
Rising fossil fuel prices Energy security
Greenhouse gas emissions
DE CRS PTC and LF
1000-4000 200 and 1000 30–80 times concentrationRatio
750 300ºC and 1000 393ºC thermal fluid temperature
5–25 kW 10 and 200 MW 30–80 MW powerconversion unit
Brayton mini turbines
advanced thermodynamic cycles
Rankine power generation cycle
Comparsion between the systems
Configurations of Parabolic Trough solar power plants
1. PTC solar power plant with heat transfer fluid (HTF) and auxiliary heater.
2. PTC solar power plant with heat transfer fluid (HTF) and thermal storage tanks.
3. PTC solar power plant with direct steam generation (DSG).
4. PTC solar field integrated with a combined cycle system (ISCCS).
Operational Solar Thermal Power Stations
MW Name Location Technology
200 Andasol 4–7 Granada parabolic trough with heat storage
100Solnova 2, 4–5
Sevilla parabolic trough with heat storage
50 Ibersol Badajoz Fuente de Cantos parabolic trough
50 Ibersol Valdecaballeros 1–2 Valdecaballeros parabolic trough
50 Ibersol Sevilla Aznalcollar parabolic trough
50 Ibersol Almería Tabernas parabolic trough
50 Ibersol Albacete Almansa parabolic trough
50 Ibersol Murcia Lorca parabolic trough
50 Ibersol Zamora Cubillos parabolic trough
Parabolic Trough Collector (PTC)1. Design Parameters of a (PTC)→concentration ratio
→ The acceptance angle
→The rim angle
Losses in the Solar Field
• temperature differences
•altitude angles
• Reflectivity• Intercept factor• Transmitivity • Absorbtivity
•incidence angle,
Geometrical losses
Optical losses
Thermal Losses
Shadowing losses
Heat storage system
One challenge facing the widespread use of solar energy
is reduced or curtailed energy production when the sun
sets or is blocked by clouds. Thermal energy storage
provides a workable solution to this challenge
Storage systems Technologies
The two-tank direct system
Two-tank indirect system
Single-tank thermocline system
Parameters Value Units
Mass flow rates 138.5 kg/s
2981.589 kg/s
1362.9158 kg/s
1154.9695 kg/s
207.946 kg/s
HTF Temperatures THTF,SF,in 391 oC
THTF,SF,out 291 oC
Power43832.88 kW
68475.8958 kW
112308.7758 kW
100000.00 kW
98400.00 kW
92.752 kW
1400.235 kW
Efficiency38.75%
Describe the number of solar collectors
For one collector=468.105 (kw.hr/day)
Total number of the collectors N = 16072
N for solar collectors for day = 9040N for storage = 7032
Q storage = 7032×468.105 = 3291714.36 kw.hr / day.
Size and layout of the solar fieldThe aperture area of one PTC, AC = trough aperture × trough length = 5.76×12 = 69.12 m2
The total aperture area of the solar field = NPTC × AC = 16072×69.12 = 1110896.64 m2
The total solar field area = 3.5×1110896.64 = 3888138.24 m2 = 3.888 km2