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Renewable Energy Solutions

The renewable energy industry: Flownex SE simulation applications & benefits

The renewable energy industries attentions in the 21st Century are competitive cost efficient production, increasing outputs to meet demands and optimization of its processes to meet safety, environmental and quality targets. Today’s technology advances show incredible optimization results and return on investment for the industry. Flownex Simulation Environment is the main technological advance that the industry can employ, to analyze and optimize plant designs and existing infrastructure to maximize potential outputs, efficiently and cost effectively.

The renewable industry can make significant savings using Flownex to simulate, predict and optimize outputs in some of the following systems:

  • Wind Power
  • Concentrated Solar Power (CSP)
  • Biomass Gasification
  • Geothermal Power

     

 

Wind Power

Wind power2Wind power is currently one of the fastest growing renewable energy technologies with large scale use of wind power focused on electricity generation using wind turbines.  These turbines consist mainly of a rotor (which spins as the wind passes over it) and a generator, usually linked through a step-up gearbox. Flownex is well suited for the design and optimization of the thermal hydraulic related systems found in wind turbines, these systems include:

  • Hydraulic Units.
  • Generator Coolers.
  • Lubrication Systems.

 

Flownex Application in lubrication system design and optimization:

  • Simulate the flow of oil in pipes, tanks, pumps, etc.
  • Calculate the flow distribution through the entire system.
  • Find out if the oil temperature will be within specifications through the whole system.
  • Evaluate if sufficient oil pressure is available to all components under all operating conditions.

 

Flownex Application in generator cooler design and optimization:

  • Simulate the flow in the water circuit under varying operating conditions.
  • Be used to evaluate the control logic and strategy governing the cooling system.
  • Evaluate abnormal scenarios, such as heat exchanger tube blockages/breakages or pump failures.

 

Flownex Application in hydraulic unit design and optimization:

  • Calculate flow losses in hydraulic lines dynamically under varying conditions.
  • Calculate the effects of abnormal scenarios, such as pressure line breakages.
  • Be used to construct a flexible model of the system that can be used to conduct feasibility studies on configuration or equipment changes.

 


 

Concentrated Solar Power

Systems utilizing the concentrated thermal power of the sun usually consist of a solar collector, a working fluid and a power cycle.  The availability of the system is also much improved if some form of thermal storage is incorporated to extend the operating hours of the plant beyond day time. Flownex is well suited for the design and optimization of thermal concentrated solar power; these systems include:

  • Collector and heat transfer system.
  • Thermal storage system.
  • Steam generator.
  • Concentrated photovoltaic systems.

 

Solar power

Flownex Application in the collector and heat transfer system design and optimization:

  • Model the effects of thermal transients, caused by the daily irradiation profile, on the integrated system. 
  • Simulate thermal distribution over the collector field during transients, such as plant start-ups and shutdowns. 
  • Investigate the time dependent effects of tube breakages or loss of insulating vacuum on the performance of the collector field.
  • In molten salt systems, identify areas where and conditions under which the salt will freeze.  
  • Molten salt solution variation effect on system efficiency.  

 

Flownex Application in thermal storage system design and optimization:

  • Model the inherent transient nature of thermal storage system.
  • Be used to simulate charging and discharging under varying operating conditions and solar irradiation.
  • Be used to conduct feasibility studies on plant improvements or system changes.
  • Be used to investigate control strategies during plant design.
  • Be used to create highly flexible models, useful for conducting feasibility studies in the concept design stage.
  • Testing various heat transfer fluids.  

 

Flownex Application in steam generator design and optimization:

  • Model the heat and flow distribution through the tubes of an external receiver steam generator.
  • Be programmed to include a variable heat input into the steam generator, simulating the daily DNI profile.
  • Be used to simulate start-ups and shut-downs of steam generators.
  • Be used to simulate safety pressure relief valve operation.
  • Simulate accident scenarios, such as the rupture of a high pressure steam tube.
  • Identify low temperature areas in molten salt systems, where freezing of the salt will be most likely.  
  • Flownex can also be used to test the feasibility of various mitigating measures.

  

Flownex Application in power cycle design and optimization:

  • Simulate the steam cycle dynamically to evaluate system performance under varying conditions;
  • Model auxiliary systems, such as cooling water circuit, lubrication systems, etc.
  • Be used to construct models of individual components, such as the pre-heater, in order to study their performance during transient operation.
  • Simulate plant start-ups and shut-downs.

Gasification can be described as the process of converting a carbon rich substance into a gas consisting mainly of hydrogen and carbon monoxide. This is accomplished by heating the feedstock (carbon rich substance) in an oxygen deprived environment in the presence of moisture.  Flownex is well suited to design and optimization of biomass gasification systems, these solutions include:

  • Model the temperature in various regions of the refractory and water walls of the gasifier.
  • Model the pressure drop through fixed gasification beds and molecular sieves.
  • Simulate the fluid and heat flow distribution throughout the plant under varying conditions and during abnormal scenarios.
  • Simulate plant components such as lubrication systems, heat exchangers, steam generators, etc.
  • Simulate safety systems, such a pressure relief valves.  Valve geometry, mass and inertia can be modeled.
  • Model auxiliary systems, such as compressed air, component coolers etc.

 


 

Biomass Gasification

BiomassGasification

Gasification can be described as the process of converting a carbon rich substance into a gas consisting mainly of hydrogen and carbon monoxide. This is accomplished by heating the feedstock (carbon rich substance) in an oxygen deprived environment in the presence of moisture.  Flownex is well suited to design and optimization of biomass gasification systems, these solutions include:

  • Model the temperature in various regions of the refractory and water walls of the gasifier.
  • Model the pressure drop through fixed gasification beds and molecular sieves.
  • Simulate the fluid and heat flow distribution throughout the plant under varying conditions and during abnormal scenarios.
  • Simulate plant components such as lubrication systems, heat exchangers, steam generators, etc.
  • Simulate safety systems, such a pressure relief valves.  Valve geometry, mass and inertia can be modeled.
  • Model auxiliary systems, such as compressed air, component coolers etc.

 

 


 

Geothermal Power

Geothermal power uses the energy contained inside the earth to do useful work. Geothermal energy can be harnessed in two ways, namely directly or through conversion to electricity. Flownex is well suited for the design and optimization of geothermal power systems, these solutions include:

  • Direct usage of geothermal power 
  • Electricity generation 

Geothermal power direct usage

Flownex Application in simulation direct usage of geothermal power design and optimization:

  • Model the flow distribution throughout the distribution network under varying loads.
  • Test the efficiency gained through the installation of alternative insulation. 
  • Use a demand profile to dynamically simulate daily demand cycles, providing information necessary to ensure sufficient supply at all times;
  • Simulate abnormal scenarios, such as a pipe breakage, and their effects on the rest of the system.
  • Provide a flexible simulation model that can be used to conduct feasibility studies on planned system expansions.

Flownex Application in geothermal electricity generation design and optimization:

  • Model and simulate the entire plant in a single, integrated model that can be used to test the plant’s dynamic responses to various scenarios,
  • Simulate loss of load or high pressure tube breach scenarios.
  • Evaluate and optimize the control strategies.
  • Be used to conduct detailed studies on individual components, such as the characteristics and operation of a safety pressure relief valve.
  • Be used to conduct efficient feasibility studies on proposed plant improvements or changes.