US4638194A
Expired / Lapsed
US
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Coherent magneto-caloric effect superconductive heat engine process cycle
Assignee: Individual
•
Filing: 1983-07-18
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Granted: 1987-01-20
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Expires: 2003-07-18
Abstract
Abstract Presented is a new type of heat engine and process cycle utilizing, through the medium of superconductivity, a singular high temperature heat reservoir as a source of motive fuel directed into a low temperature region, the net effect being to cyclically process a superconductive substance magneto-calorically in H-T space so as to convert a thermal energies input directly into an available work energies output, without any need for a pressed, externally derived temperature variation, nor low temperature reservoir, for absorption of waste heats, to accomplish same, and which process is adaptable for both the direct generation of mechanical energy or electrical energy, in either mode being called a "Keefengine". The process of such conversions of ambient heat into utilizable work being called "Thermosynthesis", and being the product of the thermodynamic cycling of an "Envelopment", consisting of any number of mutually insulated "Segments" of size "d", where √5λ(T)<d<ξ(T), such size being called "coherently dimensioned", and being composed of any superconductor where √5λ(T)<ξ(T). Further, output energy expectancies are on the order of 50 horse power per cubic foot, depending on design optimization.
Inventors
- 👤 Peter D. Keefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:28
CPC Classifications
H; H02; H02N; H02N11/00; H02K; H02K55/00; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876; Y10S505/877; Y10S505/878
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
218 words
A method for producing work from a superconductive heat engine having field control means for applying a magnetic field and heat reservoir means for supplying fuel for said heat engine, comprising the steps of: providing at least one thermally and electrically substantially isolated segment made from a superconductive material having 100ξ(T) greater than √5λ(T) and having a size between 100ξ(T) and √5λ(T), which will achieve a magneto-caloric effect phase transition affecting substantially the entire volume of said segment in which a mixture of phase state is substantially absent during said phase transition, where ξ(T) is defined as the temperature dependent range of coherence of the superconductive electrons and λ(T) is defined as the temperature dependent depth of penetration into the superconductor by a magnetic field, and where a magneto-caloric effect is defined as a superconductive phase variation process in which latent heat evolution is capable of varying the temperature of the superconductor; cycling said segment between a superconductive phase and a normal phase by varying the applied magnetic field relative to said segment in a predetermined relationship with a change in the temperature of said segment and selectively supplying heat from said heat reservoir means in cooperation with a magneto-caloric effect, said work being produced by the relative change in the applied magnetic field during said superconductive phase.
Claim 2
Independent Claim
218 words
A method for producing work from a superconductive heat engine having field control means for applying a magnetic field and heat reservoir means for supplying fuel for said heat engine, comprising the steps of: providing at least one thermally and electrically substantially isolated segment made from a superconductive material having 100ξ(T) greater than √5λ(T) and having a size between 100ξ(T) and √5λ(T), which will achieve a magneto-caloric effect phase transition affecting substantially the entire volume of said segment in which a mixture of phase state is substantially absent during said phase transition, where ξ(T) is defined as the temperature dependent range of coherence of the superconductive electrons and λ(T) is defined as the temperature dependent depth of penetration into the superconductor by a magnetic field, and where a magneto-caloric effect is defined as a superconductive phase variation process in which latent heat evolution is capable of varying the temperature of the superconductor; cycling said segment between a superconductive phase and a normal phase by varying the applied magnetic field relative to said segment in a predetermined relationship with a change in the temperature of said segment and selectively supplying heat from said heat reservoir means in cooperation with a magneto-caloric effect, said work being produced by the relative change in the applied magnetic field during said superconductive phase.
Claim 3
Dependent Claim
48 words
The method according to claim 1, wherein said magneto-caloric effect causes said segment to self cool, at least in part, in response to a transition from said superconductive phase to said normal phase, whereby a latent heat of cooling is operable to decrease the temperature of said segment.
Claim 4
Dependent Claim
48 words
The method according to claim 2, wherein said magneto-caloric effect causes said segment to self heat, at least in part, in response to a transition from said normal phase to said superconductive phase, whereby a latent heat of heating is operable to increase the temperature of said segment.
Claim 5
Dependent Claim
43 words
The method according to claim 3, wherein said heat from said heat reservoir means causes the temperature of said segment to increase to a transmogrification point in said cycling step where said segment is switched from one of said phases to the other.
Claim 6
Dependent Claim
38 words
The method according to claim 4, wherein the magnitude of said magnetic field is varied relative to said segment at a rate such that a phase change is retained until a transmogrification point in said cycling is reached.
Claim 7
Dependent Claim
39 words
The method according to claim 5, wherein a plurality of said segments are provided to form an envelopment in which each of said segments are generally electrically and thermally isolated from each other, and mechanically associated with each other.
Claim 8
Dependent Claim
65 words
The method according to claim 6, wherein said size of said segments in said envelopment is such that the cross-sectional diameter for each of said segments is generally less than the range of coherence and at least five times the penetration depth of said applied magnetic field, and a substantial portion of the bulk volume caloric and magnetic properties of said segments continue to function.
Claim 9
Dependent Claim
24 words
The method according to claim 7, wherein said segments are selected from the group consisting of superconductors having the characteristics of Type I superconductors.
Claim 10
Dependent Claim
22 words
The method according to claim 8, wherein said heat engine produces mechanical work from the heat supplied by said heat reservoir means.
Claim 11
Dependent Claim
22 words
The method according to claim 8, wherein said heat engine produces electrical work from the heat supplied by said heat reservoir means.
Claim 12
Independent Claim
419 words
A method for producing work from a superconductive heat engine having field control means for applying a magnetic field and heat reservior source means for supplying fuel for said heat engine, comprising the steps of: providing at least one thermally and electrically substantially isolated segment made from a superconductive material having 100 ξ(T) greater than √5λ(T) and of a size between 100 ξ(T) and √5λ(T) which will achieve a magneto-caloric effect phase transition affecting substantially the entire volume of said segment in which a mixture of phase state is substantially absent during said phase transition, where ξ(T) is defined as the temperature dependent range of coherence of the superconductive electrons and λ(T) is defined as the temperature dependent depth of penetration into the superconductor by a magnetic field, and where a magneto-caloric effect is defined as a superconductive phase variation process in which latent heat evolution is capable of varying the temperature of the superconductor; providing an initial state in which said segment is in a superconductive phase at a temperature between absolute zero and the critical temperature of said segment in zero magnetic field; increasing the applied magnetic field relative to said segment beyond a first transmogrification point, where said segment undergoes a transition from said superconductive phase to a normal phase at a rate sufficient to retain said normal phase of said segment with respect to a decrease in the temperature of said segment; allowing said segment to self cool under a magneto-caloric effect in response to said transition from said superconductive phase to said normal phase, whereby a latent heat of cooling is operable to decrease the temperature of said segment; decreasing the applied magnetic field relative to said segment beyond a second transmogrification point, where said segment undergoes a transition from said normal phase to said superconductive phase at a rate sufficient to retain said superconductive phase of said segment with respect to an increase in the temperature of said segment; allowing said segment to self heat under said magneto-caloric effect in response to said transition from said normal phase to said superconductive phase when said transition occurs at a temperature above absolute zero, whereby a latent heat of heating is operable to increase the temperature of said segment; and permitting heat flow from said heat reservoir means to said segment for further increasing the temperature of said segment until said segment is returned to said initial state, said work being produced by the relative change in the applied magnetic field during said superconductive phase.
Claim 13
Independent Claim
419 words
A method for producing work from a superconductive heat engine having field control means for applying a magnetic field and heat reservior source means for supplying fuel for said heat engine, comprising the steps of: providing at least one thermally and electrically substantially isolated segment made from a superconductive material having 100 ξ(T) greater than √5λ(T) and of a size between 100 ξ(T) and √5λ(T) which will achieve a magneto-caloric effect phase transition affecting substantially the entire volume of said segment in which a mixture of phase state is substantially absent during said phase transition, where ξ(T) is defined as the temperature dependent range of coherence of the superconductive electrons and λ(T) is defined as the temperature dependent depth of penetration into the superconductor by a magnetic field, and where a magneto-caloric effect is defined as a superconductive phase variation process in which latent heat evolution is capable of varying the temperature of the superconductor; providing an initial state in which said segment is in a superconductive phase at a temperature between absolute zero and the critical temperature of said segment in zero magnetic field; increasing the applied magnetic field relative to said segment beyond a first transmogrification point, where said segment undergoes a transition from said superconductive phase to a normal phase at a rate sufficient to retain said normal phase of said segment with respect to a decrease in the temperature of said segment; allowing said segment to self cool under a magneto-caloric effect in response to said transition from said superconductive phase to said normal phase, whereby a latent heat of cooling is operable to decrease the temperature of said segment; decreasing the applied magnetic field relative to said segment beyond a second transmogrification point, where said segment undergoes a transition from said normal phase to said superconductive phase at a rate sufficient to retain said superconductive phase of said segment with respect to an increase in the temperature of said segment; allowing said segment to self heat under said magneto-caloric effect in response to said transition from said normal phase to said superconductive phase when said transition occurs at a temperature above absolute zero, whereby a latent heat of heating is operable to increase the temperature of said segment; and permitting heat flow from said heat reservoir means to said segment for further increasing the temperature of said segment until said segment is returned to said initial state, said work being produced by the relative change in the applied magnetic field during said superconductive phase.
Claim 14
Dependent Claim
23 words
The method according to claim 11, wherein said steps of increasing the magnetic field and allowing said segment to self cool occur concomitantly.
Claim 15
Dependent Claim
23 words
The method according to claim 12, wherein said steps of decreasing the magnetic field and allowing said segment to self heat occur concomitantly.
Claim 16
Dependent Claim
41 words
The method according to claim 13, wherein said step of permitting heat flow occurs after said step of allowing said segment to self heat, and said step of decreasing the magnetic field continues concommitantly with said step of permitting heat flow.
Claim 17
Dependent Claim
34 words
The method according to claim 14, wherein said step of increasing the magnetic field increases the applied magnetic field relative to said segment to a predetermined magnitude generally associated with said second transmogrification point.
Claim 18
Dependent Claim
45 words
The method according to claim 1, wherein said steps of increasing the magnetic field, allowing said segment to self cool, decreasing the magnetic field, allowing said segment to self heat, and permitting heat flow form a magnetization cycle which is repeated at a predetermined rate.
Claim 19
Dependent Claim
39 words
The method according to claim 16, wherein a plurality of said segments are provided to form an envelopment in which each of said segments are generally electrically and thermally isolated from each other, and mechanically associated with each other.
Claim 20
Dependent Claim
65 words
The method according to claim 17, wherein said size of said segments in said envelopment is such that the cross-sectional diameter for each of said segments is generally less than the range of coherence and at least five times the penetration depth of said applied magnetic field, and a substantial portion of the bulk volume caloric and magnetic properties of said segments continue to function.
Claim 21
Dependent Claim
24 words
The method according to claim 18, wherein said segments are selected from the group consisting of superconductors having the characteristics of Type I superconductors.
Claim 22
Dependent Claim
22 words
The method according to claim 19, wherein said heat engine produces mechanical work from the heat supplied by said heat reservoir means.
Claim 23
Dependent Claim
22 words
The method according to claim 19, wherein said heat engine produces electrical work from the heat supplied by said heat reservoir means.
Claim 24
Independent Claim
405 words
A method for producing work from a superconductive heat engine having field control for applying a magnetic field and heat reservoir means for supplying fuel for said heat engine, comprising the steps of: providing at least one thermally and electrically substantially isolated segment made from a superconductive material having 100ξ(T) greater than √5λ(T) and of a size between 100ξ(T) and √5λ(T) which will achieve a magneto-caloric effect phase transition affecting substantially the entire volume of said segment in which a mixture of phase state is substantially absent during said phase transition, where ξ(T) is defined as the temperature dependent range of coherence of the superconductive electrons and λ(T) is defined as the temperature dependent depth of penetration into the superconductor by a magnetic field, and where a magneto-caloric effect is defined as a superconductive phase variation process in which latent heat evolution is capable of varying the temperature of the superconductor; providing an initial state in which said segment is in a normal phase at a temperature between absolute zero and the critical temperature of said segment when in zero magnetic field; decreasing the applied magnetic field relative to said segment beyond a first transmogrification point, where said segment undergoes a transition from said normal phase to a superconductive phase at a rate sufficient to retain said superconductive phase of said segment with respect to an increase in the temperature of said segment; allowing said segment to self heat under a magneto-caloric effect in response to said transition from said normal phase to said superconductive phase, whereby a latent heat of heating is operable to increase the temperature of said segment; increasing the applied magnetic field relative to said segment beyond a second transmogrification point, where said segment undergoes a transition from said superconductive phase to said normal phase at a rate sufficient to retain said normal phase of said segment with respect to a decrease in the temperature of said segment; allowing said segment to self cool under said magneto-caloric effect in response to said transition from said superconductive phase to said normal phase, whereby a latent heat of cooling is operable to decrease the temperature of said segment; and permitting heat flow from said heat reservoir means to said segment for increasing the temperature of said segment until said segment is returned to said initial state, said work being produced by the relative change in the applied magnetic field during said superconductive phase.
Claim 25
Independent Claim
405 words
A method for producing work from a superconductive heat engine having field control for applying a magnetic field and heat reservoir means for supplying fuel for said heat engine, comprising the steps of: providing at least one thermally and electrically substantially isolated segment made from a superconductive material having 100ξ(T) greater than √5λ(T) and of a size between 100ξ(T) and √5λ(T) which will achieve a magneto-caloric effect phase transition affecting substantially the entire volume of said segment in which a mixture of phase state is substantially absent during said phase transition, where ξ(T) is defined as the temperature dependent range of coherence of the superconductive electrons and λ(T) is defined as the temperature dependent depth of penetration into the superconductor by a magnetic field, and where a magneto-caloric effect is defined as a superconductive phase variation process in which latent heat evolution is capable of varying the temperature of the superconductor; providing an initial state in which said segment is in a normal phase at a temperature between absolute zero and the critical temperature of said segment when in zero magnetic field; decreasing the applied magnetic field relative to said segment beyond a first transmogrification point, where said segment undergoes a transition from said normal phase to a superconductive phase at a rate sufficient to retain said superconductive phase of said segment with respect to an increase in the temperature of said segment; allowing said segment to self heat under a magneto-caloric effect in response to said transition from said normal phase to said superconductive phase, whereby a latent heat of heating is operable to increase the temperature of said segment; increasing the applied magnetic field relative to said segment beyond a second transmogrification point, where said segment undergoes a transition from said superconductive phase to said normal phase at a rate sufficient to retain said normal phase of said segment with respect to a decrease in the temperature of said segment; allowing said segment to self cool under said magneto-caloric effect in response to said transition from said superconductive phase to said normal phase, whereby a latent heat of cooling is operable to decrease the temperature of said segment; and permitting heat flow from said heat reservoir means to said segment for increasing the temperature of said segment until said segment is returned to said initial state, said work being produced by the relative change in the applied magnetic field during said superconductive phase.
Claim 26
Dependent Claim
23 words
The method according to claim 22, wherein said steps of increasing the magnetic field and allowing said segment to self cool occur concomitantly.
Claim 27
Dependent Claim
23 words
The method according to claim 23, wherein said steps of decreasing the magnetic field and allowing said segment to self heat occur concomitantly.
Claim 28
Dependent Claim
41 words
The method according to claim 24, wherein said step of permitting heat flow occurs after said step of allowing said segment to self cool, and said step of increasing the magnetic field continues concommitantly with said step of permitting heat flow.
Claim 29
Dependent Claim
34 words
The method according to claim 25, wherein said step of increasing the magnetic field increases the applied magnetic field relative to said segment to a predetermined magnitude genrally associated with said first transmogrification point.
Claim 30
Dependent Claim
45 words
The method according to claim 2, wherein said steps of decreasing the magnetic field, allowing said segment to self heat, increasing the magnetic field, allowing said segment to self cool, and permitting heat flow form a demagnetization cycle which is repeated at a predetermined rate.
Claim 31
Dependent Claim
39 words
The method according to claim 27, wherein a plurality of said segments are provided to form an envelopment in which each of said segments are generally electrically and thermally isolated from each other, and mechanically associated with each other.
Claim 32
Dependent Claim
65 words
The method according to claim 28, wherein said size of said segments in said envelopment is such that the cross-sectional diameter for each of said segments is generally less than the range of coherence and at least five times the penetration depth of said applied magnetic field, and a substantial portion of the bulk volume caloric and magnetic properties of said segments continue to function.
Claim 33
Dependent Claim
24 words
The method according to claim 29, wherein said segments are selected from the group consisting of superconductors having the characteristics of Type I superconductors.
Claim 34
Dependent Claim
22 words
The method according to claim 30, wherein said heat engine produces mechanical work from the heat supplied by said heat reservoir means.
Claim 35
Dependent Claim
22 words
The method according to claim 30, wherein said heat engine produces electrical work from the heat supplied by said heat reservoir means.
Claim 36
Dependent Claim
70 words
The method according to claim 22, wherein said step of permitting heat flow from said heat reservoir means to said segments for increasing the thermal energy of said segments occurs, at least in part, before said latent heat of cooling, and which thereby contributes at least part of said thermal energies required to return said segment to said initial state upon conclusion of said evolution of latent heat of cooling.
Claim 37
Dependent Claim
217 words
A superconductive heat engine for producing work, comprising: at least one thermally and electrically substantially isolated segment made from a superconductive material having 100ξ(T) greater than √5λ(T) and of a size between 100ξ(T) and √5λ(T) which will achieve a magneto-caloric effect phase transition affecting substantially the entire volume of said segment in which a mixture of phase state is substantially absent during said phase transition, where ξ(T) is defined as the temperature dependent range of coherence of the superconductive electrons and λ(T) is defined as the temperature dependent depth of penetration into the superconductor by a magnetic field, and where a magneto-caloric effect is defined as a superconductive phase variation process in which latent heat evolution is capable of varying the temperature of the superconductor; means for providing a predetermined cryogenic environment for said segment; means for applying a magnetic field to said segment; means for varying the magnitude of said magnetic field relative to said segment in a predetermined relationship with a variation in temperature of said segment such that said segment may be cycled between a superconductive phase and a normal phase in response to the magnitude of said magnetic field; means for selectively supplying heat to said segment in cooperation with a magneto-caloric effect to cause a variation in the temperature of said segment.
Claim 38
Dependent Claim
217 words
A superconductive heat engine for producing work, comprising: at least one thermally and electrically substantially isolated segment made from a superconductive material having 100ξ(T) greater than √5λ(T) and of a size between 100ξ(T) and √5λ(T) which will achieve a magneto-caloric effect phase transition affecting substantially the entire volume of said segment in which a mixture of phase state is substantially absent during said phase transition, where ξ(T) is defined as the temperature dependent range of coherence of the superconductive electrons and λ(T) is defined as the temperature dependent depth of penetration into the superconductor by a magnetic field, and where a magneto-caloric effect is defined as a superconductive phase variation process in which latent heat evolution is capable of varying the temperature of the superconductor; means for providing a predetermined cryogenic environment for said segment; means for applying a magnetic field to said segment; means for varying the magnitude of said magnetic field relative to said segment in a predetermined relationship with a variation in temperature of said segment such that said segment may be cycled between a superconductive phase and a normal phase in response to the magnitude of said magnetic field; means for selectively supplying heat to said segment in cooperation with a magneto-caloric effect to cause a variation in the temperature of said segment.
Claim 39
Dependent Claim
45 words
The superconductive heat engine according to claim 34, wherein said means for varying the magnitude of said magnetic field varies the magnitude of said magnetic field at a rate such that a phase change is retained until a transmogrification point in said cycling is reached.
Claim 40
Dependent Claim
41 words
The superconductive heat engine according to claim 35, wherein a plurality of said segments are provided to form an envelopment in which each of said segments are generally electrically and thermally isolated from each other, and mechanically associated with each other.
Claim 41
Dependent Claim
52 words
The superconductive heat engine according to claim 36, wherein said means for applying a magnetic field applies a magnetic field in which at least one portion of said segments in said envelopment are subjected to one magnetic field magnitude and another portion of said segments are subjected to another magnetic field magnitude.
Claim 42
Dependent Claim
67 words
The superconductive heat engine according to claim 37, wherein said size of said segments in said envelopment is such that the cross-sectional diameter for each of said segments is generally less than the range of coherence and at least five times the penetration depth of said applied magnetic field, and a substantial portion of the bulk volume caloric and magnetic properties of said segments continue to function.
Claim 43
Dependent Claim
27 words
The superconductive heat engine according to claim 38, wherein a magnetically permeable insulator of heat and electricity is interposed between each of said segments in said envelopment.
Claim 44
Dependent Claim
21 words
The superconductive heat engine according to claim 39, wherein said segments in said envelopment are aligned in a three dimensional array.
Claim 45
Dependent Claim
19 words
The superconductive heat engine according to claim 40, wherein said segments are disposed radially about an axis of rotation.
Claim 46
Dependent Claim
37 words
The superconductive heat engine according to claim 39, wherein said envelopment includes transmissor means for accepting the magnetic flux expelled from said segments when said segments undergo a transition from said normal phase to said superconductive phase.
Claim 47
Dependent Claim
30 words
The superconductive heat engine according to claim 42, wherein said envelopment includes a diamagnetic shield means for confining the magnetic flux generated by said means for applying a magnetic field.
Claim 48
Dependent Claim
44 words
The superconductive heat engine according to claim 38, wherein said means for selectively supplying heat includes a heat reservoir and at least one heat transfer surface which is operable to selectively transfer heat from said heat reservoir means to said segments in said envelopment.
Claim 49
Dependent Claim
18 words
The superconductive heat engine according to claim 3, wherein said heat reservoir is a source of ambient heat.
Claim 50
Dependent Claim
50 words
The superconductive heat engine according to claim 4, wherein said means for varying the magnitude of said magnetic field includes translation means for providing relative movement between said segments and said applied magnetic field, such that said segments are subjected to a magnetic field of a varying magnitude with position.
Claim 51
Dependent Claim
24 words
The superconductive heat engine according to claim 46, wherein said translation means provides linear movement of said segments relative to said applied magnetic field.
Claim 52
Dependent Claim
24 words
The superconductive heat engine according to claim 46, wherein said translation means provides rotational movement of said segments relative to said applied magnetic field.
Claim 53
Dependent Claim
21 words
The superconductive heat engine according to claim 46, wherein said means for applying a magnetic field includes at least one solenoid.
Claim 54
Dependent Claim
37 words
The superconductive heat engine according to claim 46, wherein said heat engine includes an output shaft connected to said envelopment for transmitting the work developed by said relative movement between said segments and said applied magnetic field.
Claim 55
Dependent Claim
17 words
The superconductive heat engine according to claim 46, wherein each of said segments are spherical in shape.
Claim 56
Dependent Claim
26 words
The superconductive heat engine according to claim 51, wherein said segments are selected from the group consisting of superconductors having the characteristics of Type I superconductors.
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