CO2 Thermal Hydraulic Pressure Motor

[iquant]

Interesting use of CO2 by Delugeinc.com in their natural energy engine.
You can see a few different implementations here: http://www.youtube.com/user/NaturalEnergyEngine#p/u



Two Cylinder Prototype:

Couple Ideas to improve on the concept.

1. Change the piston type accumulator to a bladder type accumulator.
Eliminates friction and reduces response time to < 25ms.
Closed Loop CO2 charged instead of traditional N2 charged.
Gain Benefit of Liquid CO2 Expansion Ratio 845:1 allowing more hydraulic fluid to be pressurized.

2.  for the hot side implement an inductive heating element.
96+% efficient with all heat delivered directly to the CO2 side of the accumulator.
Precise electronic timing and control of pressurization of CO2.
The bladder system will also absorb all heat from the working hydraulic fluids and act as the oil cooler.

3.  Use a circulating liquid cooling system for the cold side.  Capture the cooling of each pressure release cycle.
pump the liquid between the different accumulators based on need/state of operation.

4.  Increase system operating pressure and temperature to supercritical CO2 state. 32C 72ATM.
System should easily be able to operate in pressures up to 10000psi

Picture 3 Citroen style accumulator Spheres pumping hydraulic fluid.
Each at the different cycle states to provide continuous pressurized fluid flow.
Sphere 1. Releasing Pressure
Sphere 2. Charging Pressure
Sphere 3. Charged and waiting

Effectively you have a silent and powerful closed loop co2 thermal hydraulic compressor.
Size the accumulators to your desired flow rate.. ie 2GPM.

The fluid can be used to run an electric  generator, pump or really anything.

This isn't overunity per se as it is a thermal process using the 300k ambient heat and taking advantage of some of the unique properties and efficiencies of supercritical state of CO2.

Instead of an open loop internal combustion engine you can utilize this closed loop co2 internal compression engine.

Obviously Deluge has already proved the concept and have production systems installed for desalination, power generation, cooling etc.  but their implementation operates sub-critical at much lower pressures and on an industrial scale.  I believe with these few improvements we can develop a small and safe suitcase sized appliance.

 

[iquant]

Working on an unorthodox accumulator design... Actually an accumulator / inductive pump design.

This accumulator is of a spherical diaphragm shaped design charged with CO2 with an internal ferromagnetic plate on the gas charging side.

The general idea is to use an external electric inductive heating element similar to a cook top hob to heat the internal ferromagnetic plate on the gas side boiling off the liquid co2 creating pressure.

CO2 is a little trickier than N2 because we are working trans critical liquid / gas phase changes. Once the internal temp is > 31C CO2 goes supercritical and behaves like N2.

Trying to get an idea on cycling times between loading fluid, pressurizing and releasing for this type of design.

CO2 Precharge is temperature dependent but in the 300 - 800 psi range. As hydraulic fluid fills the accumulator, CO2 absorbs heat reaching an equilibrium pressure of 800 - 1000 psi. Inducing heat pressurizes the accumulator to 2000 - 2500psi.

This unorthodox design should be energy efficient, silent and cool to the touch... The inductive hobs are 96% efficient and COP for CO2 cooling is >3. Ambient heat is 70C higher than CO2's -56C triple point.
Should be damn efficient absorbing all heat and damping all noise.

Input is appreciated.

[iquant]

Making some progress.