Low temperature heat
to reusable energy

conversion machine

Thermal machine converting low temperature heat into reusable energy

Electricity bolt blue

Electricity

Reduce your primary energy consumption

compressed gas bottle

Compressed gas

Easy to store and to transport

Thermometer blue

Thermal enhancement

Improve the energy efficiency of your process

A disruptive technology

TRL6 current Cixten prototype

Current prototype – TRL6
Currently in testing in laboratory

  • By exploiting the exceptional properties of supercritical CO2.
  • Through a cellular architecture and a centralized control unit.
  • By generating high pressure through thermal compression

Supercritical CO2 ?

The exceptional properties of CO2 :

  • High density at high pressure : optimal for thermal transfer
  • Low viscosity at high pressure : reduces losses and friction
  • Large variations in pressure and volume with very small temperature differences
  • High energy density

Operating principle

  1. Alternating of heating / cooling cycles of the sCO2 in the modules
  2. Pressure and volume variations converted into mechanical energy
  3. Conversion of the mechanical power into the final energy vector

Innovative advantages

Efficiency optimized

Efficiency

The cellular architecture of our machine enables to get efficient heat transfers.

thermometer

Usable temperature

The waste temperature needs at least 60°C with a temperature difference of 40°C to the cold source in order to ensure an economic viability of the installation.

Scalability of Cixtens design

Scalability

The cells have a standardized architecture. The amount of the cells can be adapted to the size of the heat deposit. The control system is centralized and independent of the quantity of cells.

gears colorized

Robustness

Our machine is developed according to the high exigences of the EU market. The tightness of the sCO2 pressure chamber is done with static seals, which reduces the wear and the maintenance efforts over the time.

Adaptability to heat sources

Adaptability

Our machine adapts to temperature variations and the intermittency of the heat sources. Wide operating conditions with good efficiency can be achieved.

green circular arrows

Neutral fluid

The use of CO2 as a thermodynamic fluid minimizes some risks (non-flammable, non-toxic) reduces the environmental impact (GWP=1, ODP=0), while enhancing energy efficiency

Innovative advantages

Efficiency optimized

Efficiency

The cellular architecture of our machine enables to get efficient heat transfers.

Scalability of Cixtens design

Scalability

The cells have a standardized architecture. The amount of the cells can be adapted to the size of the heat deposit. The control system is centralized and independent of the quantity of cells.

Adaptability to heat sources

Adaptability

Our machine adapts to temperature variations and the intermittency of the heat sources. Wide operating conditions with good efficiency can be achieved.

thermometer

Usable temperature

The waste temperature needs at least 60°C with a temperature difference of 40°C to the cold source in order to ensure an economic viability of the installation.

gears colorized

Robustness

Our machine is developed according to the high exigences of the EU market. The tightness of the sCO2 pressure chamber is done with static seals, which reduces the wear and the maintenance efforts over the time.

green circular arrows

Neutral fluid

The use of CO2 as a thermodynamic fluid minimizes some risks (non-flammable, non-toxic) reduces the environmental impact (GWP=1, ODP=0), while enhancing energy efficiency

Interested in learning more?




    Cixtens brochure

    FAQ

    No, our machine uses CO2, non-toxic, non-flammable, and in a closed pressure chamber. To guarantee the safety of users and surrounding processes, it is designed according to the strictest standards, including the European Machinery and Pressure Equipment Directives. The machine is plugged into the thermal effluent of the process.

    Depending of the type of fluid, the heat source can be integrated directly to the thermal machine. The presence of polluting particles, substances that can cause corrosion, chemical attack on materials, or risks of obstruction can however require an intermediate heat exchanger to ensure the operationality and maintenance efforts.
    The feasibility study will define the need of such requirements.

    The minimum valuable temperature is currently set at 60°C. This limit is not linked to technical considerations but to an economic choice (ROI in particular).

    No, our machine operates with a minimal noise level. However, the noise can be increased by auxiliar equipment.

    Due to the high energy density of sCO2, the footprint of the machine is limited.
    We are committed to design compact and easy to integrate thermal machines, indoor or outdoor, in order to maximize their accessibility and suitability to your needs.

    It is a scale used to assess the degree of development of a technology. At level 6, the technology has been tested in an environment that closely simulates real operating conditions. This indicates that our prototypes has demonstrated its operation under near-operational conditions, marking an important step towards its commercialization.

    Still have questions ?