In the name of the ALLAH , the most beneficent , the most merciful

Design of parabolic trough solar collectors power plant with storage

system

Scope and Aim of ProjectThe energy consumption of the world

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

Types of Renewable energy

Concept of concentrating solar power (CSP) plant

Solar Thermal Power Plant Technologies

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).

PTC Solar Power Plant with Heat Transfer Fluid (HTF) auxiliary heater.

PTC Solar Power Plant with HTF and Thermal Storage Tanks

PTC Solar Power Plant with Direct Steam Generation (DSG)

Integrated Solar Combined Cycle Systems (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

Component of the system

Solar fieldStorage system Power block

Solar

fieldReceiver

Parabolic

trough

Heat transfer

fluid

Solar field

Solar field orientation

Solar field layout

Solar field layout

Parabolic Trough Collector (PTC)1. Design Parameters of a (PTC)→concentration ratio

→ The acceptance angle

→The rim angle

Mirror material

Bearing structure

Receiverhigh radiation absorption low heat losses

Heat Transfer Fluid (HTF)

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

Two-tank direct storage

Two-Tank Indirect System

Single-Tank Thermocline System

Storage tank calculation system

Power Block

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

Heat transfer rates313470.637 kW

265643 kW

39749.5 kW

190991.5 kW

34902 kW

125226 kW

Power43832.88 kW

68475.8958 kW

112308.7758 kW

100000.00 kW

98400.00 kW

92.752 kW

1400.235 kW

Efficiency38.75%  

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Heat transferred from collector to HTF

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  

Praise be to Allah, the Lord of the Worlds

Thank you