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​REVFRACC -

Reverse Fractionation

Direct Air Capture

Technology

The Revolutionary Technology

REVFRACC is a novel Direct Air Capture (DAC) system that affordably reverses climate change. Unlike other DAC solutions out there, it doesn’t require a fan to capture the air and clean it. On a 1 acre site it captures 35,000 tonnes of CO2 per annum.

 

Cryogenic cooling has been considered too expensive simply due to the energy, cost and volume limitations of working with low temperature fluids and gases. Moreover, low grade thermal energy can never been recovered.

 

We’ve seen the issues and found the solutions! 

HOW IT WORKS

1. Air Capture & Filtration

  • ​Air is captured from the towers. 

  • There are mesh guards that stops debris from entering. 

  • A heat exchanger with a mesh guard is used to accumulate the moisture in the air. 

  • A water pump is connected to extract any accumulated water. 

  • A further mesh guard is there to stop any moisture from getting out. 

2. THE TURBINE PROCESS (SECLOPT)

  • ​Liquid nitrogen passes through a SECLOPT turbine with heated bearings and cold - pressed steel blades. 

  • Conversion of nitrogen enthalpy to work, transforming thermal energy into electromagnetic energy. 

  • The output cools the heat that comes into the turbine. 

3. Turbine - The Phase Change

  • Concentrates low-grade energy by increasing the enthalpy of liquid nitrogen. 

  • Liquid nitrogen expands 700 times its original volume in an enclosed cylinder (80-90% full). 

  • Builds up high pressure due to incremental enthalpy of nitrogen using air’s thermal energy and latent heat of condensation. 

4. Enhanced Cooling With VECGALIS

  • ​VECGALIS is a patented technology that liquefies gas without the need of electricity.  

  • Nitrogen gas exiting the turbine goes into VECGALIS for further cooling.  

  • Momentum of nitrogen particles collides, resulting in heat loss recovery on the exterior. 

5. Rapid Condensation Mechanisms

  • Cold nitrogen gas enters an evacuated cylinder, causing rapid cooling. Contraction in nitrogen volume by 700 times, creating relative negative pressure at turbine exit.

  • Low pressure (< 1 atm) at exit enhances turbine efficiency, converting more thermal energy to work.

Image at Revfracc page

6. Sequestering Elements

  • ​Through the process of liquefaction and captured in tanks. 

  • These tanks can be used for various purposes in different industries (E.g. Healthcare – NHS, Concrete, Food & Drink etc). 

  • The tanks are sustainable and will be reused or they can be recycled. 

7. Electricity Generation

  • Electricity is generated by the phase change turbine powers the system.

  • This can then power any site it is connected to, otherwise any unused electricity will be sent to the Grid.

  • For every tonne of air captured REVFRACC will generate 500 Gigawatt (GWh) of electricity per annum.

System Characteristics:

  • Low energy consumption, capital expenditure (capex) light.

  • No need for a large fan to pull in air; low pressure around collection towers due to removal of atmospheric gases.

Atmospheric Energy Potential: 

  • Atmospheric air constituents, with their latent heat of condensation, represent significant energy (420KJ/KG).

  • Acknowledges the environmental impact of climate change driven by the energy in the atmosphere, leading to storms, heatwaves, and floods.

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