Solugas

General Info
Owner/s: 
Abengoa Solar
Technology: 
Central receiver (power tower)
Country: 
Spain
Status: 
Operational
Purpose: 
Research & Development
Usage: 
Electricity
Power: 
4.60 MW
Start date: 
June, 2013
Location: 
Sanlucar la Mayor, Sevilla
Technology

Solar field

Heliostats: 
Abengoa
Heat Transfer Fluid: 
Air
HTF Temp out: 
800ºC

Power block

Storage Y/N: 
No
Power cycle: 
Brayton
Turbine: 
Turbomach Mercury 50TM
Companies involved
Project developer: 
Abengoa Solar
DLR
GEA Technika Cieplna
NEAL
Turbomach
O&M: 
Abengoa Solar
Key components suppliers: 
Turbomach
DLR
GEA Technika Cieplna
Suppliers details: 
Turbomach (Turbine)
GEA + DLR (Receiver)
Abengoa Solar (Solar field)
Other
Other info: 

Extracted from Solugas' website

 

Technology Overview

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The main objective of the Solugas project is to demonstrate the performance and cost reduction potential of a solar-hybrid driven gas turbine system on a commercial scale. The demonstration project is the first commercial-scale gas turbine system that can later be offered to customers in several configurations (combined cycle, co-generation, etc...).

Solar hybrid plants are operated in a thermodynamic open cycle, known as Brayton cycle, which processes are described as follows:

1->2: Fresh air is compressed, where its pressure and temperature are raised.

2->A: The compressed air is heated in the solar receiver using concentrated solar energy.

A->3: The compressed air is heated in the combustion chamber using Natural gas.

3->4: The hot air drives the turbine and expands until atmospheric pressure, turbine drives generator, producing electricity.

4->1: The heat energy of exhaust gases from the turbine can be recovered with a bottoming steam cycle or a recuperator (preheating the working fluid between 2 and receiver).


Diagram of Solugas demonstration plant

For the demonstration project, a solar tower has been designed and constructed to house the receiver, hot gas piping and gas turbine package. A dedicated heliostat field concentrates the sunlight onto the solar receiver, where the solar energy is absorbed and used to heat pressurized air. The heated air is then fed into the combustion chamber of a 4,6 MWe industrial gas turbine.


View of heliostat field

The development of the solarized gas turbine unit is based on the commercial 4.6 MW turbine Mercury 50. For this specific project the combustion chamber, the control system and emergency modes are adapted to the special requirements of solar-hybrid operation.

Mercury 50TM gas turbine used in the Solugas demonstration
plant por Mercury 50TM gas turbine used in the Solugas
demonstration plant
Copyright © Turbomach SA. 2012. All rights reserved
Diagram of Mercury 50TM gas turbine installed in the Solugas
demonstration plant por Diagram of Mercury 50TM gas turbin
e installed in the Solugas demonstration plant
Copyright © Turbomach SA. 2012. All rights reserved
 

 

 

Solugas receiver is expected to heat compressed air to operation temperatures of 800º C. The receiver concept is following a new innovative cylindrical design, achieving higher efficiencies, compact dimensions and improved manufacturing.

Design view of tubular receiver

 

After installation and commissioning, the solar-hybrid driven gas turbine system will undergo a twenty-four month demonstration test to validate component efficiencies and system performance. Solugas is the first demonstration of solar-hybrid gas turbine systems in this power range and an important step in the commercialisation of this technology. The project is funded under a grant from the 7th Framework Program of the European Union and unifies technology leaders, each with specific and high value knowledge of their respective subsystem.

The following list shows the members of the Solugas consortium unifying technology leaders:

• Abengoa Solar (ES): 
consortium leader, tower, heliostat field, system layout and integration

• Turbomach (CH): 
gas turbine incl. modification

• GEA (PL): 
receiver manufacturing

• DLR (DE): 
receiver and system layout, modeling

• NEAL (ALG): 
market assessment

Objectives

The main objectives of the Solugas project are:

  • Design, manufacturing and demonstration of an innovative low-cost heliostat field and power tower design and an upscaled solar pressurized air receiver
  • Operation of the demonstration plant for a period of at least 24 months
  • Verification of system performance (high performance potential)
  • Significant reduction of cooling water requirements
  • Reduction of O&M effort due to fully automatic operation of the power plant
  • Demonstration of dispatchability of electrical power in hybrid operation
  • Demonstration of the overall cost reduction potential of commercial scale solar-hybrid gas turbine systems
  • Assessment of market potential for standard solar-hybrid power plant modules

Project Time Schedule

The Solugas project started on November 1, 2008 and has duration of fifty-four months. The first eighteen months will cover the detailed design, construction and manufacturing of all components of the Solugas demonstration system: heliostat field, tower, gas turbine and solar receiver. During the following 6 months, the complete system will be integrated at the Abengoa Solar solar test facility Plataforma Solar de Sanlúcar la Mayor (PSSM), near Seville, Spain. After commissioning, the demo plant will operate for two years, and will include detailed performance evaluations and automatic long-term operation testing. In parallel to the operation phase, detailed system performance and cost models will be developed and verified against measured plant data. This data will be used to assess the market potential of this technology.


Solugas time schedule

 

General comments:

The main objective of the Solugas project is to demonstrate the performance and cost reduction potential of a solar-hybrid driven gas turbine system on a commercial scale. The demonstration project is the first commercial-scale gas turbine system that can later be offered to customers in several configurations (combined cycle, co-generation).

Solugas plant is the first pilot solar hybrid gas turbine power plant at megawatt scale, representing a significant step towards commercialization of this technology. The project, financed under the European Union’s 7th Framework Program, has brought together leaders in each of the respective areas of technological knowledge.

Documents and links:
Solugas Solugas
Videos: