GRAVITY FIELD ENERGY STORAGE AND RECOVERY SYSTEM

Abstract

Device for storing energy, using a physical object, such as a mass or buoyant object floating in fluid. A mass is repositioned to greater altitude in a gravitational field to a position of higher potential energy. A buoyant object is forcibly submerged into a fluid. displacing fluid, to a position of higher potential energy. The stored potential energy may be recovered with extremely low loss regardless of the state of charge of the system, or length of time of the storage. Maintaining the charge is indefinitely lossless.

Claims

1) An energy storage device comprising: a first shaft comprising an input end and an output end to input rotational kinetic energy to be stored; a main shaft comprising an input end and an output end; a transmission operably connected to the output end of the first shaft and to the input end of the main shaft such that the transmission can change a rotation ratio between the first shaft and the main shaft; a pully rigidly connected to the main shaft such that rotation of the main shaft causes rotation of the pully; a storage unit comprising an object to be displaced vertically such that potential energy due to gravity can be increased, the object being operably connected to the pully; a cable operably connected to the pully such that the rotation of the pully displaces the object vertically; a second shaft comprising an input end and an output end to output the stored energy; a second transmission operably connected to output end of the main shaft and to the input end of the second shaft such that the transmission can change the rotation ratio between the main shaft and the second shaft; with the cable operably connected to the pully such that the rotation of the pully displaces the object vertically downward to increase potential energy, wherein the object is a buoyant object.

2) An energy storage device as in claim 1 with a wind turbine operably connected such that the wind turbine can rotate the first shaft.

3) An energy storage device as in claim 1 where the input end of the first shaft operably connected to a power take-off shaft of a diesel tractor such that the diesel tractor can rotate the first shaft.

4) An energy storage device as in claim 1 with a hydraulic motor operably connected such that the hydraulic motor can rotate the first shaft.

5) An energy storage device as in claim 1 with a pneumatic motor operably connected such that the pneumatic motor can rotate the first shaft.

6) An energy storage device as in claim 1 with a electric motor operably connected such that the electric motor can rotate the first shaft.

7) An energy storage device as in claim 1, where the output end of the second shaft is operably connected to factory machinery such that the second shaft can rotate the factory machinery.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 Shows the invention implemented at a factory near a river.

[0022] FIG. 2 Shows the invention implemented at a factory near a river.

[0023] FIG. 3 First drawing from the left shows the invention as it could be installed on an offshore wind turbine.

[0024] Second drawing from left shows a cross-section view of the wind turbine stanchion showing internal shafts. Rightmost drawing shows a close up, cross-s view of the wind turbine stanchion showing internal shafts.

DETAILED DESCRIPTION OF THE INVENTION

[0025] The Gravity Field Energy Storage & Recovery System is a mechanical, electrical and electronic system that can store energy from a variety of sources. The energy is directed at a mechanical/electrical device designed to raise a large object in a gravitational field, storing the energy as potential energy in the field.

[0026] The Force of Gravity is described as the mutual physical attraction, which every particle in the universe has with every other particle in the universe. Newton discovered the universal law of gravitation in the year 1686 and described the force of gravity as

[00001]$F=\frac{G.Math.M_a.Math.M_b}{r^2}$

[0027] Where M, and M, are the masses of two particles, r is the distance between the particles, and G is a constant of proportionality. The constant G, was first measured by Cavendish in 1771 and the accepted value today is

G=6.6710.sup.11 Nm.sup.2/kg.sup.2

[0028] A large ensemble of particles such as a planet, acts as an aggregated single object with a mass equal to the sum of the masses of the particles, and the force of gravity is directed at the center of mass of the ensemble. Thus, the force of gravity upon an object near the surface of the Earth is

[00002]$F=\frac{G.Math.M_e.Math.m}{r^2}$

[0029] Where M.sub.e is the mass of Earth taken as 5.9810.sup.24 kg, m is the mass of an object infinitesimally less massive than earth, and r is the distance between their centers of mass. The force is direct toward the center of the earth.

[0030] The acceleration due to gravity is

[00003]$\begin{array}{c}a=.Math.\frac{F}{m}\\ =.Math.\frac{G.Math.M_e}{r^2}\\ =.Math.9.8.Math..Math.m.Math.\text{/}.Math.s^{2}32.Math..Math.\mathrm{ft}.Math.\text{/}.Math.s^2\end{array}$

[0031] Interestingly, it s independent of the mass of the object.

[0032] This is the acceleration of gravity near the surface of the earth, which is usually denoted with a lower case italic g.

[0033] We calculate the change in g with increasing altitude, such

[00004]$g\left(r\right)=\frac{G.Math.M_e}{r^2}$$\begin{array}{c}.Math.g\left(r\right)=.Math.\frac{d.Math.g}{d.Math.r}.Math.r\\ =.Math.-\frac{G.Math.M_e}{r^3}.Math.r\\ =.Math.-\frac{2.Math..Math.g}{r}.Math..Math..Math.r\end{array}.Math..Math.\frac{.Math..Math.g}{g}=-\frac{2.Math..Math..Math.r}{r}$

[0034] The fractional change of g at the earth's surface, where r=610.sup.6 m, increases one part per million for every increase in altitude of 3 meters. This insignificant change is very important in considering the present invention in that the efficiency of the energy storage does not change in relation to the state of charge.

[0035] Aristotelian mechanics, which was accepted for thousands of years, believed that a force was necessary to maintain a body in uniform motion. Newton, through experimentation found rather that a Force acting upon a body accelerates the body according to his famous 2.sup.nd Law. The law in one dimension can be integrated as

[00005]$F=\frac{d}{d.Math.t}.Math.\mathrm{Mv}$$F\left(x\right)=m.Math.\frac{d.Math.v}{d.Math.t}$$m.Math.{}_{X_a}^{x_b}.Math.\frac{d.Math.v}{d.Math.t}.Math.d.Math.x={}_{x_a}^{x_b}.Math.F\left(x\right).Math.d.Math.x$

[0036] And after a formal procedure we find that

mv.sub.b.sup.2mv.sub.a.sup.2=.sub.x.sub.a.sup.x.sup.bF(x)dx

[0037] where the term

mv.sup.2 [0038] is known as the kinetic energy and the right hand side is called work as the particle moves and changes velocity from a to h.

[0039] In shorthand we say

K.sub.bK.sub.a=W.sub.ba

[0040] This formula is known as The Work-Energy Theorem in one dimension.

[0041] In practice we see that a canon ball traveling at high velocity may hit the hull of a ship and its velocity reduces to zero. It is the change in velocity, which imparts the energy and does work on the hull. We can also see that the velocity of the canon ball, instead of being supplied by the expanding gasses of the canon, could be supplied by a drop from a vertical height. The canon ball dropped from rest at a given height h above the ground will deliver kinetic energy to do work on the deck of the ship or on the ground in proportion to its height. We can call this a potential energy, which can be released at will. It will require work to elevate the canon ball to its prearranged height. As it turns out the potential energy is equal and opposite the kinetic energy. We say

E=K+U

[0042] Where U denotes the potential energy of the system and E is the total mechanical energy of the system, which is always constant since mechanical energy is conserved. Thus, as a mass at rest at a given height represents a potential energy, gravity will accelerate the mass and convert it to kinetic energy as the potential energy is reduced.

[0043] The Gravitational Energy Field Storage & Recovery System operates within the Earth's gravitational fields. When we do work to separate masses that are gravitationally attracted to each other we create a form of potential energy. This invention harnesses these forces to store energy and then recover this stored energy on demand.

[0044] We can harness energy from a variety of sources to perform the work of repositioning the mass in the gravitational field allowing us to increase the potential energy in the system. We can use the electric utility power grid, electric generator, solar, hydroelectric, geothermal, wind, ocean tidal, ocean current, ocean wave, ocean thermal, nuclear fission, nuclear fusion, hydrogen fuel cell. It includes any energy source, which converts a motion, such as an oscillating motion, to a rotational shaft motion. These sources may also include a tractive pulling force from a diesel tractor or diesel locomotive, or a direct lifting force from a heavy lift helicopter.

[0045] Once energy is stored by the repositioning of the mass, we have the ability to recover the energy immediately or to store it indefinitely. The potential energy will remain intact indefinitely if the positioning apparatus remains intact. Once stored, maintaining this energy requires no work and is lossless for an indefinite period of time unlike battery systems. Unlike battery systems, energy storage can be implemented incrementally up to the storage limit of the system, regardless of the state of charge or history of the system, without loss of efficiency.

[0046] The stored energy can be released and recovered by controlling the acceleration of the mass as the potential energy becomes kinetic energy. Kinetic energy can be converted to a plurality of useful energy forms, including electrical, pneumatic, hydraulic and others.

[0047] The energy storage phase can be repeated with random or continuous amounts of energy until the unit reaches it energy storage limits. The energy can remain stored for indefinite periods of time without loss.

[0048] The stored energy can be released by controlling the acceleration of the mass. The stored potential energy becomes kinetic with the acceleration of the mass in the release cycle.

General System Configuration

[0049] Energy can be harnessed from power sources such as: electromechanical, geothermal, wind, ocean tidal, ocean current, ocean wave, ocean thermal, nuclear fission, nuclear fusion, solar, chemical reactions, pneumatic, hydraulic, mechanical, and others.

[0050] FIG. 1 ELECTRIC/ELECTRONIC CONTROL UNIT 11 chooses power source via ELECTRIC/ELECTRONIC INTERCONNECT 10 from either ELECTRIC POWER GRID 13 or SOLAR ARRAY 15 and delivers power via ELECTRIC/ELECTRONIC INTERCONNECT 10 to ELECTRIC MOTOR 7. ELECTRIC MOTOR 7 rotates FIRST SHAF 4 delivering energy to TRANSMISSION 6. TRANSMISSION 6 rotates MAIN SHAFT 1 such that CABLE 3 winds onto the attached PULLY 2 forcing BUOYANT OBJECT 14 downward into the fluid to store energy.

[0051] In discharge cycle, rising BUOYANT OBJECT 14 unwinds CABLE 3 from PULLY 2 turning MAIN SHAFT 1 delivering shaft horsepower to TRANSMISSION 6 and powering HYDRAULIC PUMP 17.

[0052] FIG. 2 ELECTRIC/ELECTRONIC CONTROL UNIT 11 chooses power source via ELECTRIC/ELECTRONIC INTERCONNECT 10 from either ELECTRIC POWER GRID 13 or SOLAR ARRAY 15 and delivers power via ELECTRIC/ELECTRONIC INTERCONNECT 10 to ELECTRIC MOTOR 7. ELECTRIC MOTOR 7 rotates FIRST SHAF 4 delivering energy to TRANSMISSION 6. TRANSMISSION 6 rotates MAIN SHAFT 1 such that CABLE 3 which, is attached to Earth, winds onto the attached PULLY 2 forcing BUOYANT OBJECT 14 downward into the fluid to store energy.

[0053] In discharge cycle, rising BUOYANT OBJECT 14 unwinds CABLE 3 from PULLY 2 turning MAIN SHAFT 1 delivering shaft horsepower to TRANSMISSION 6 and powering PNEUMATIC PUMP 18.

[0054] FIG. 3 WIND TURBINE 16 delivers direct shaft horsepower to TRANSMISSION 6 via FIRST SHAFT 4. TRANSMISSION 6 rotates MAIN SHAFT 1 and attached PULLY 2 to wind CABLE 3 forcing BUOYANT OBJECT 14 to submerge, storing energy.

[0055] In discharge cycle, rising BUOYANT OBJECT 14 unwinds CABLE 3 from PULLY 2 rotating MAIN SHAFT 1. TRANSMISSION 6 couples MAIN SHAFT 1 to SECOND SHAFT 5.which rotates ELECTRIC GENERATOR 8.

[0056] 1) MAIN SHAFT

[0057] 2) PULLY

[0058] 3) CABLE

[0059] 4) FIRST SHAFT

[0060] 5) SECOND SHAFT

[0061] 6) TRANSMISSION

[0062] 7) ELECTRIC MOTOR

[0063] 8) ELECTRIC GENERATOR

[0064] 9) ELECTRIC MOTOR/GENERATOR

[0065] 10) ELECTRIC/ELECTRONIC INTERCONNECT

[0066] 11) ELECTRIC/ELECTRONIC CONTROL UNIT

[0067] 12) WATER SURFACE

[0068] 13) ELECTRIC POWER GRID

[0069] 14) BUOYANT OBJECT

[0070] 15) SOLAR ARRAY

[0071] 16) WIND TURBINE

[0072] 17) HYDRAULIC PUMP

[0073] 18) PNEUMATIC PUMP

[0074] 19) WIND TURBINE STANCHION

[0075] 20) BULKHEAD