The invention relates to a gaseous fuel composite, a device for producing the gaseous fuel composite, and subcomponents used as part of the device for producing the gaseous fuel composite, and more specifically, to a gaseous fuel composite made of a fuel such as natural gas and its oxidant such as air for burning as part of different systems such as fuel burners, combustion chambers, and the like.
Mixing of components is known. The basic criteria for defining efficiency of a mixing process relates to those parameters that define the uniformity of a resultant mix, the energy needed to create this change in parameters, and the capacity of the mix to maintain those different new conditions. In some technologies, such as the combustion of a biofuel, an organic fuel, or any other exothermic combustible element, there is a desire for an improved method of mixing a combustible element with its oxidant or with other useful fluids as part of the combustion process. The mixture of a liquid fraction with a gas is visible to the human eye, and as such, a person can easily understand the need to reduce a liquid into small droplets to improve contact surface area between the carburant and its oxidant.
The mixture of two liquids is also as equally intuitive to comprehend. Most people are experienced with mixing two liquids in a volume to achieve a complete mixture. For example, it is known that some liquids mix easily such as a syrup into sparkling water, while others such as vinegar in oil do not. The mixture of two gasses is harder to observe, even more so when the gasses are invisible to the human eye. The false belief that two gasses mix completely without the need for activation energy or dynamic energy is widespread. For example, tritium gas has unique properties: it is explosive and the molecules adhere to surfaces and flow downward under normal gravity. Each gas and thus any mixture of gases is accordingly unique, and the mixture of gasses presents challenges that are often complex and counterintuitive.
One known example of a visible gas-gas mixture is the creation of smoke rings by a smoker into the atmosphere. Another example is the release of a warm, humid, CO2-enriched breath on a cold winter day, creating a plume of visible water condensation and evaporation in the cold atmosphere. One of the main problems with gas-gas mixtures is the failure to understand how molecules of gas interact and move in contact with other molecules where a first set of molecule has a first kinetic energy level and a first specific linear velocity and the second set of molecules has a second kinetic energy level and a second specific linear velocity.
Several technologies are known to help with the combustion of fuel, such as nozzles that spray a fuel within an oxidant using pressurized air, eductors, atomizers, or venturi devices. Some of these technologies are more effective than mechanical mixing devices, and these devices generally act upon only one components to be mixed (i.e., the fuel or the oxidant) to create a dynamic condition and an increase of kinetic energy. Engines such as internal combustion engines burn fuel to power a mechanical device. The inefficiencies of internal combustion engines result in a portion of the fuel failing to combust during a fuel cycle, the creation of soot, or the burning of fuel at less than optimal rates. The inefficiency of engines or combustion chamber conditions can result in increased toxic emissions into the atmosphere and can require a larger or inefficient amount of fuel to generate a desired level of energy. Various processes are used to attempt to increase the efficiency of combustion.
In chemistry, a mixture results from the mix of two or more different substances without chemical bonding or chemical alteration. The molecules of two or more different substances, in fluid or gaseous form, are mixed to form a solution. Mixtures are the product of blending of substances like elements and compounds, without chemical bonding or other chemical change, so that each substance retains its own chemical properties and makeup. Composites can be the mixture of two or more fluids, liquids, gasses, or any combination thereof. For example, a fluid composite may be created from a mixture of a fossil fuel and its oxidant such as air. While one type of composite is described, one of ordinary skill in the art will recognize that any type of composite is contemplated.
Another property of composites is the change in overall properties while each of the constituting substances retains its own properties when measures locally. For example, the boiling temperature of a composite may be the average boiling temperature of the different substances forming the composite. Some composite mixtures are homogenous while others are heterogeneous. A homogenous composite is a mixture whose composition in one area of space cannot be identified, while a heterogeneous mixture is a mixture with a composition that can easily be identified since there are two or more phases are present.
What is needed is a new fluid composite having desirable overall properties and characteristics, and more specifically, a new fuel composite with properties of enhanced fuel burning, improved burn rates, greater heat production from the fuel, better spread of the thermal distribution in an environment, and other such gains. What is also needed is an improved device for mixing gasses using turbulent stream technology.
The invention relates to a gaseous fuel composite, a device for producing the gaseous fuel composite, and subcomponents used as part of the device for producing the gaseous fuel composite, and more specifically, to a gaseous composite made of a gas fuel such as natural gas and its oxidant such as air for burning as part of different systems such as fuel burners, combustion chambers, and the like. The device includes several vortex generators, each with a curved aerodynamic channel amplifier to create a stream of air to aerate the gas in successive stages using both upwards and rotational kinetic energy. Further, a vortex generator may have an axial channel with a conical shape or use different curved channel amplifier to further create the gaseous fuel composite.
Certain embodiments are shown in the drawings. However, it is understood that the present disclosure is not limited to the arrangements and instrumentality shown in the attached drawings.
For the purposes of promoting and understanding the principles disclosed herein, reference is now made to the preferred embodiments illustrated in the drawings, and specific language is used to describe the same. It is nevertheless understood that no limitation of the scope of the invention is hereby intended. Such alterations and further modifications in the illustrated devices and such further applications of the principles disclosed and illustrated herein are contemplated as would normally occur to one skilled in the art to which this disclosure relates.
Incorporation by Reference
The following specification incorporates by reference all figures, disclosures, claims, headers, and titles of International Application Nos. PCT/US08/75374, filed Sep. 5, 2008, entitled “Dynamic Mixing of Fluids,” and PCT/US08/075,366, also filed on Sep. 5, 2008, entitled “Method of Dynamic Mixing of Fluids,” along with nationalized U.S. application Ser. Nos. 12/529,625, filed Sep. 2, 2009, entitled “Dynamic Mixing of Fluids,” and 12/529,617, filed Sep. 2, 2009, entitled “Method of Dynamic Mixing of Fluids,” and International Application No. PCT/US2009/043547, filed on May 12, 2009, also entitled “System and Apparatus for Condensation of Liquid from Gas and Method of Collection of Liquid.”
Energy Efficiency Test
In one embodiment, methane gas (CH4) is used as the fuel gas and air containing oxygen gas (O2) is used as the oxidant of the methane gas. The chemical equation associated with the combustion of the methane is described as: CH4+2O2═CO2+2H2O. Two molecules of water are created during this process and two molecules of oxygen are needed for the combustion.
At room pressure, with 1 mol of gas taking the volume of 22.4 liters, a volume of 22.4 m3 of methane gas corresponds to 1000 mol of gas where this gas having a molar mass of 16.042 g/mol producing a weight of 16.042 kg of CH4 for the 1000 mol of gas. The weight of the oxygen needed for the combustion is 64.0192 kg based on a molar mass at room temperature of 32.0096 g/mol and produces 36.03 kg of water at a molar mass of 18.015 g/mol.
In a burner, a flow of methane of 1000 scf/h enters the combustion chamber (1 scf=28.32 liters, 1000 scf/h=28.32 m3/h, or 1264 mol/h). At the flow rate of 1000 scf/h, the reaction requires 80.92 kg/h of oxygen, and produces 45.514 kg/h of water.
In one test, 9,700 scf/h of air is introduced into the device to produce a gaseous fuel composite. Air has 21% oxygen, so the oxygen introduced is 2,037 scf/h. This volume is taken as the stoichiometric ratio of methane to air for combustion. The gaseous fuel composite has a total weight of 10,670 scf/h (1000 scf/h of methane and 9,700 scf/h of air).
The optimal thermal output for methane gas is 891 kj/mol or 840 BTU/mol (1 BTU=1.06 kj). Burning of 1000 scf/h of methane or 1264 mol/h of methane corresponds to 1,061,760 BTU/h of thermal output. The real thermal energy released is found to be 90% of the maximal output or approximately 955,585 BTU/h for a natural gas.
A test was conducted with and without the device shown in
With the device, the volume of the fuel composite being 1000 scf/h and 2,448 scf of air with a 29% volume of gas in the fuel composite, a total of 45.51 kg of water is released per hour if no other source of intake is taken outside of the gaseous fuel composite. The thermal efficiency taken at 90% of the theoretical value of 955,585 BTU/h for a gas with 29% of methane is 277,119 BTU/h.
With the device for producing the gaseous fuel composite, air input Tai=11° C. (52° F.), air output To=85.5° C. (185.5° F.), with ΔT=To−Tai=74.5° C., air input humidity 87% with cair=1.027 kj/(kg° K) resulting in 76.5115 kj or 72.59 BTU of energy used to heat the air from the combustion of the gaseous fluid composite. With a volume of air of 10,741 scf during the heat exchange corresponding to 365.022 kg of air, the energy needed to heat is 26,497 BTU.
As a consequence, 26,497 BTU are used to warm the air using the device for producing the gaseous fuel composite when compared with 22,652 BTU without the device. The increased output with the device is 3,845 BTU or approximately 17%. This corresponds to the increase in thermal efficiency of burning of the natural gas when it is first transformed into a gaseous fuel composite.
Carbon Oxide Release Test
Under normal circumstances, gas is sent out into a burner using an atomizer where the natural gas is dispersed in air in an open chamber. In the gaseous fuel composite device as shown in
In a test with the device for producing a gaseous fuel composite as shown in
When compared to high-fire conditions, the production of CO is reduced from 1,093 to 259.76 ppm, and at low-fire conditions is reduced from 3,999.36 to 823.46 ppm, reductions of 23.8% and 20.6%, respectively. Therefore, it is found that by creating a gaseous fuel composite, even with a small fraction of the stoichiometric air, thermal efficiency improves significantly and production of undesired byproducts is reduced greatly. Atomizer design in the device for producing a gaseous fuel composite allows for optimization of fuel burning and the degradation of unburned fuel. When using an actual gas burner where the thermal efficiency can be as low as 60% to 65%, what is contemplated is improvements in thermal efficiency and degradation of byproducts, impurities, or other unburned fuel elements as part of the process.
Device for Producing a Gaseous Fuel Composite
A device for the production of a gaseous fuel composite 10 is shown in
As the section of the axial opening is reduced, either the speed of the gaseous fuel composite is increased, the density of the gaseous fuel composite is increased, or a combination of both based on upstream conditions. The device 10 as shown includes an upper flange 114 and a lower flange 113 connected hermetically with a housing 102 as shown in the shape of a cylinder with inlets for an external oxidant gas.
The multistage process shown in
Air is not mixed in the multistage process to produce a gaseous fluid composite simply by releasing air into the internal cavity.
Using a dark arrow,
As shown in
As the tangential channels create a vortex-like movement of the air as it enters the vertical cavity and mixes with the gas fuel 112 it has two vector components: a rotational energy that creates a rotational movement of the gaseous fuel composite and an upward energy that lifts the gaseous fuel composite and increases the speed and energy of the overall gaseous fuel composite. When both of these vectors are merged with the upward movement of the gaseous fuel composite, the resulting upward vortex 701 and 702 is created.
Using arrows,
What is shown in
In one embodiment, the outlet 108 is a nozzle as shown in
What is also described is a system for the production of a gaseous fuel composite comprising the process of transforming a gas fuel into a gaseous fuel composite by successive steps of connecting a device for the production of a gaseous fuel composite to an inlet connected to a source of gas fuel as shown by the black arrows at the bottom of
There may be a subsequent step of using at least a second vortex generator for further aerating the gaseous fuel composite in a multistage process. Finally, a gaseous fuel composite as shown by the arrows in black in the upper portion of
It is understood that the preceding is merely a detailed description of some examples and embodiments of the present invention and that numerous changes to the disclosed embodiments can be made in accordance with the disclosure made herein without departing from the spirit or scope of the invention. The preceding description, therefore, is not meant to limit the scope of the invention but to provide sufficient disclosure to one of ordinary skill in the art to practice the invention without undue burden.
This application is a continuation-in-part a family of patents, each claiming priority to the following U.S. provisional applications: U.S. Ser. No. 60/970,655, filed on Sep. 7, 2007, entitled “Method and Device for Preparation and Activation of Fuel”; U.S. Ser. No. 60/974,909, filed on Sep. 25, 2007, entitled “Method and Device for Preparation and Activation of Fuel”; U.S. Ser. No. 60/978,932, filed on Oct. 10, 2007, entitled “Method and Device for Preparation and Activation of Fuel”; U.S. Ser. No. 61/012,334, filed on Dec. 7, 2007, entitled “Method and Device for Preparation and Activation of Fuel”; U.S. Ser. No. 61/012,337, filed on Dec. 7, 2007, entitled “Method and Device for Preparation and Activation of Fuel”; U.S. Ser. No. 61/012,340, filed on Dec. 7, 2007, entitled “Fuel Preparation”; and U.S. Ser. No. 61/037,032, filed on Mar. 17, 2008, entitled “Devices and Methods for Mixing Gaseous Components.” This application also claims priority to international applications stemming from these provisional filings, namely, International Application No. PCT/US08/75374, filed Sep. 5, 2008, entitled “Dynamic Mixing of Fluids,” and International Application No. PCT/US08/075,366, also filed on Sep. 5, 2008, entitled “Method of Dynamic Mixing of Fluids.” These two international applications have been nationalized in the U.S. under application Ser. Nos. 12/529,625, filed Sep. 2, 2009, entitled “Dynamic Mixing of Fluids,” and 12/529,617, filed Sep. 2, 2009, entitled “Method of Dynamic Mixing of Fluids.” Finally, this application further claims priority to U.S. Ser. No. 61/052,317, filed on May 12, 2008, entitled “System and Apparatus for Condensation of Liquid from Gas and Method of Collection of Liquid,” and the associated international application stemming from this provisional filing, International Application No. PCT/US2009/043547, filed on May 12, 2009, also entitled “System and Apparatus for Condensation of Liquid from Gas and Method of Collection of Liquid.” All the preceding applications are incorporated herein by reference in their entireties.
Number | Date | Country | |
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20110126462 A1 | Jun 2011 | US |
Number | Date | Country | |
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61037032 | Mar 2008 | US | |
61012340 | Dec 2007 | US | |
61012337 | Dec 2007 | US | |
61012334 | Dec 2007 | US | |
60978932 | Oct 2007 | US | |
60974909 | Sep 2007 | US | |
60970655 | Sep 2007 | US | |
60970655 | Sep 2007 | US | |
60974909 | Sep 2007 | US | |
60978932 | Oct 2007 | US | |
61012334 | Dec 2007 | US | |
61012337 | Dec 2007 | US | |
61012340 | Dec 2007 | US | |
61037032 | Mar 2008 | US | |
61052317 | May 2008 | US |
Number | Date | Country | |
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Parent | 12529625 | Apr 2010 | US |
Child | 12947991 | US | |
Parent | 12529617 | Sep 2009 | US |
Child | 12529625 | US | |
Parent | 12990942 | Nov 2010 | US |
Child | 12529617 | US |