Waste Heat Recovery
Welcome to Exoès, a company with 10 years experience in Organic Rankine Cycle.
By delegating your project to our highly seasoned team, you have the certainty to be provided with the most relevant solutions to your requirements.
Ten years of experience has made Exoès a customer and risk management oriented company. As responsiveness is in our DNA, we shorten development time at its minimum, for the benefit of your organization.
They trust us:
Our range of know-how
Real life tests
Component design and prototyping
Material and lubricant
Exoès engineers are experts in dynamic simulations on components or complete systems.
- Refprop database for fluids
- Exergy and energy balance analysis
- Test data post processing
At Exoès, we have already designed and manufactured prototype from scratch.
- Functional analysis
- Value analysis
- Cost evaluation
- Sourcing - plus de 200 fournisseurs
We have developed our own lab to select the most efficient materials in accordance with the fluids we have worked on.
- Fluid design
- Tribology & wear in extreme conditions
- Fluid ageing
- Material compatibility
- Cost evaluation
Exoès has manufactured more than 10 test rigs. We have managed to set them up at your facilities or to provide your organization with tests.
During the 22 months demotruck project with Faurecia and Renault Trucks (Volvo group), our engineers developed thorough skills on the system integration in a vehicle.
- FEA and vibrations
- Test analysis
Dynamic test rigs for powertrain auxiliaries
Flammable fluids accepted
Possibility to run dynamic drive cycles
Exemple de caractéristiques de bancs :
|Gaz burner||200 kW 200g/s 600°C|
|Electric brake||50 kW 5.500 RPM|
|Transient||5.000 RPM/s 350°C/s 200g/s2|
Endurance test rigs for components
|Heater||Heating oil 200 kW 300°C|
|Electric brake||25 kW 6.000 RPM|
Thanks to its experience in manufacturing waste heat recovery benches, Exoès tests ORC complete systems or components, with different working fluids like ethanol, water, or r245fa.
Our test benches are recognized for their reliability, safety, and excellent price/service ratio. They are tailor-made and designed in accordance with your unique specifications.
Their added value:
Only one third of the fuel introduced into a combustion engine is used to move the vehicle. The rest is lost in the form of heat via the cooling jacket and exhaust pipes.t.
Disruptive technology is the only way to remedy this energy consuming deadlock.Exoès developed products such as piston and scroll expanders or HP pumps. We are convinced that heat recovery is the ultimate way to improve HGV combustion engine efficiency.
EVE®, a patented piston expander
- Its durability has been proven (more than 3000h)
- Protected by more than 10 patents
- Its effective isentropic efficiency is of over 60%
- Its weight is under 15kg
- Its size is optimized: D200 x L200 mm
Scroll expander et HP pump
This image is a property of Faurecia
How works an Organic Rankine Cycle:
The heat exchanger (boiler) evaporates ethanol into high pressure gas. The transfer of heat from the exhaust gases is controlled by an actuated by-pass valve.
Exoès patented expander is mechanically coupled to the powertrain and reinjects energy to save fuel. As the low pressure gas comes out of the expander, it is condensed into liquid through a compact heat exchanger (condenser). The close loop of the working fluid is fed by an electro-pump, which drives the ethanol back to the boiler.
Exoès is a key player in the transportation sector and presents its progress at international congresses on a regular basis.
2017 - EORCC
Impact of water and oil contents in ethanol applied to ORC for exhaust heat recovery in heavy duty trucksPDF file
2017 - EORCC - FAURECIA
Rankine Cycle, from Thermodynamic Equation to Road Test. By Thibault FouquetPDF file
2017 - EORCC - DANA BELGIUM
Experimental Investigation of Waste Heat Recovery Using an Organic Rankine Cycle for Heavy Duty Trucks. By Maximilian HombschPDF file
2017 - ORC
Cost to benefit ratio of an exhaust heat recovery system on a long haul truck
2016 - ETA
Rankine cycles, industrialisation challenges
Paper on Springer.com
2016 - FISITA
Busan (South Korea)
Presentation of a waste heat recovery solution for HGVPaper on Fisita.com
2016 - EORCC
Belfast (Northern Ireland)
Presentation of truck integration issues with EVE®, piston expander and exhaust waste heat recovery solutionPresentation on request via the contact form
2016 - Paper published in Applied Energy
BOUVIER J.L., KIENTZ T. et al., « Experimental study of an oil-free steam piston expander for micro-combined heat and power systems », Applied Energy, 169, 2016, pages 788 – 798Paper on Sciencedirect.com
2015 - AORCC
Presentation of a waste heat recovery solution for HGVPDF file