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Buildings that capture CO2 and provide better indoor air

Over half of the world’s population is currently urban, with predictions that this number will likely grow by 1.56 billion over the next two decades. As a result, we will see new megalopolises emerge, and an exponential increase in the construction of new buildings and CO2 emissions. This surge in the number of people living and working in buildings will only reinforce the challenge of guaranteeing the best air quality levels possible. A high concentration of CO2 has been proven to make people feel dizzy, tired, and sleepy. A Harvard study shows that for each 400-ppm increase in indoor CO2 concentration, our cognitive function score becomes 20% lower.

To date, DAC technology is mainly applied in ambient air. These DAC plants do not benefit from energy-saving potentials that can be realized in an HVAC/DAC-coupling in recirculation mode in the built environment. After separation using the DAC technology, CO2 must be either stored or converted into another chemical such as methane or methanol via Power-to-X (P2X) processes. Ongoing defossilization of industrial processes will lead to a demand for alternative carbon sources in the near future. As a result, an increase in CO2 prices can be expected which might help to make DAC commercially feasible.

Soletair Power Buildings as Carbon Sinks Direct Air Capture
Soletair Power Buildings as Carbon Sinks with Direct Air Capture technology

If buildings can be used as CO2 capturing machines the lifetime emission can be offset. Soletair Power’s single system for building ventilation of 3m3/s can capture 20 tons of CO2 per year. In a single building, one might have, for example, 20 ventilation units. So, per building, it is 400 tons of CO2 captured per year. When the Soletair Power HVAC CO2 capture system is used with renewable electricity (5kWh energy required per kilo CO2 captured) (20g/kWh) the emission is 100g, when 1000g is captured.

By transforming buildings into carbon sinks, net-zero targets can become achievable. Buildings become an active protector of the environment and contribute to global negative CO2 emissions.

HVAC CO2 Capture Integration
Soletair Power’s Building-HVAC Integrated CO2 Capture Unit

Soletair Power captures carbon utilizing a building’s ventilation system, which offsets the building’s emissions, supports employee-wellbeing, and increases productivity. The modular solution operates with a plug-and-play approach, enabling any company to install and use Direct Air Capture. The captured carbon can be reused as a non-fossil-based resource in a wide array of applications, effectively rewinding the impact of CO2.

Contact us to remove CO₂ from your property.

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