Industrial Process Heat

Solar thermal energy to replace fossil fuels in factories

Note: Heat transfer fluid (HTF) is heated in the solar field and stored in energy storage tanks before it is diverted to a heat exchanger (HE) where it creates steam. The HTF is running through a closed loop where it flows back to the solar field where it gets heated again. Factories can benefit from steam or from electricity generated by steam turbines.

  • Industrial process heat accounts to almost 25% of the global energy demand
  • Energy intensive industries such as cement companies, steel manufacturers, chemicals, petrochemicals and paper factories profit substantially from solar thermal process heat
  • Solar thermal process heat can be used in steam reforming, synthetic and unconventional oil production, oil refining, biomass-based ethanol production, hydrogen production, smelting, distillation and cement production to name a few
  • Different temperature levels can be achieved with the HELIOtube technology depending on process heat level required and range between 150° and 450° Centigrade. Moreover, the HELIOtube technology can be used as a preheater

Solar thermal cooling

Using solar thermal energy to reduce cooling costs

Note: Water is chilled in the district cooling plant and supplied to customer buildings through the network of pipes. The chilled water is fed into the building’s own cooling system through the heat exchanger, and then fed back to the cooling plant in a closed loop where it is chilled again and redistributed.

  • Solar thermal can power air-conditioning systems and industrial cooling processes
  • Solar thermal cooling systems with integrated HELIOtube technology along with thermally driven absorption chillers reduce the conventional air-condition loads at a fraction of the costs and guarantee substantially lower operating costs
  • Cooling of buildings represents about 70 percent of the peak electricity load in the GCC
  • Temperature level to be reached by solar field accounts to only 90-210° Centigrade which in return chills water down to 5-9° Centigrade

Water desalination

Producing valuable fresh water through completely renewable solar energy

Note: Solar steam is (1) either fed into a steam turbine to generate electricity for the Reverse Osmosis (RO) desalination or (2) brine is heated by solar thermal heat until it condenses to fresh water through multiple flashes (Multi-Effect Distillation).

  • Fresh water is mostly a scarcity in geographic regions with high solar irradiance. Around 90 million cubic meters per day are desalinated daily worldwide to provide more than 300 million people with their required daily needs of water.
  • For RO the higher the temperature generated with the HELIOtube technology the better for the steam turbine’s efficiency the higher the energy produced and the higher the desalinated amount of water. With a HELIOVIS hybrid system at least 40 cubic meters of water can be desalinated in theory per hour.
  • MED evaporators consists of several consecutive stages with decreasing levels of pressure and temperature. The first stage is the hottest and the last one the coldest. With a HELIOVIS hybrid system at least 21 cubic meters of water can be desalinated in theory per hour.

Enhanced Oil Recover (EOR)

Increasing oil field output through solar thermal steam

Note: Solar EOR uses CSP to use the sun’s energy to heat water and generate steam. The steam is injected into an oil reservoir to reduce the viscosity, or thin, heavy crude thus facilitating its flow to the surface.

  • About 430 billion barrels of heavy oil are recoverable worldwide and much of it is located in regions with good solar resource
  • Solar EOR is a viable alternative to gas-fired steam production for the oil industry. Solar EOR can generate the same quality steam as natural gas, reaching temperatures of up to 400˚ Centigrade.
  • By using solar for EOR, the gas saved can be exported or redirected to higher value uses such as power generation or industrial development. Moreover, Solar EOR produces steam with zero-emissions.
  • HELIOVIS’ technology can be integrated into fossil fuel EOR plants to improve the overall plant economics by reducing the amount of fuel required by up to 25% annually to produce steam.