US5531073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rankine cycle power plant utilizing organic working fluid
Assignee: Ormat Technologies Inc
•
Filing: 1995-06-02
•
Granted: 1996-07-02
•
Expires: 2015-06-02
Abstract
Abstract A Rankine cycle power plant includes a pair of multistage turbine modules each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft and heat depleted working fluid that is superheated. An electrical generator is located between the modules and directly coupled to their output shafts. Superheated, heat depleted working fluid from one of the modules is supplied to the input of the other of the modules.
Inventors
- 👤 Lucien Y. Bronicki
- 👤 Asher Elovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:33
CPC Classifications
F; F01; F01K; F01K25/00; F01K25/08; F01D; F01D15/00; F01D15/10; F01K23/00; F01K23/02; F01K23/04; F03; F03G; F03G4/00; F03G4/074
Claims Analysis
Total Claims: 91
Claim 1
Independent Claim
100 words
Apparatus for producing power comprising: a) a pair of multi-staged turbine modules each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expending the working fluid and producing work at the output shaft and heat depleted working fluid that is superheated; b) an electric generator located between said modules and directly coupled to their output shafts; and c) means for supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the modules.
Claim 2
Dependent Claim
100 words
Apparatus for producing power comprising: a) a pair of multi-staged turbine modules each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expending the working fluid and producing work at the output shaft and heat depleted working fluid that is superheated; b) an electric generator located between said modules and directly coupled to their output shafts; and c) means for supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the modules.
Claim 3
Dependent Claim
88 words
Apparatus according to claim 1 including: a) a vaporizer for supplying vaporized working fluid to said one of the modules, and a preheater for supplying heated working fluid to said vaporizer; b) a mixer interposed between said modules through which superheated, heat depleted working fluid from said one of the modules is transferred to the input of the other of the modules; and c) means for supplying liquid working fluid to said mixer for desuperheating the working fluid supplied to the input of the other of the modules.
Claim 4
Dependent Claim
22 words
Apparatus according to claim 2 wherein the liquid working fluid supplied to said mixer is heated working fluid produced by said preheater.
Claim 5
Dependent Claim
26 words
Apparatus according to claim 3 wherein the liquid working fluid supplied to said mixer is sprayed into the superheated, heat depleted working fluid in the mixer.
Claim 6
Dependent Claim
14 words
Apparatus according to claim 4 wherein said working fluid is an organic working fluid.
Claim 7
Independent Claim
119 words
A method for producing power from a pair of multi-staged turbine modules, each of which has an input for receiving vaporized working fluid, and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft and heat depleted working fluid that is superheated, said method comprising the steps of: a) positioning an electric generator between the modules such that the generator is directly driven by the output shafts of the modules at the same rotational speed as the modules; and b) supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the modules.
Claim 8
Independent Claim
119 words
A method for producing power from a pair of multi-staged turbine modules, each of which has an input for receiving vaporized working fluid, and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft and heat depleted working fluid that is superheated, said method comprising the steps of: a) positioning an electric generator between the modules such that the generator is directly driven by the output shafts of the modules at the same rotational speed as the modules; and b) supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the modules.
Claim 9
Dependent Claim
55 words
A method according to claim 6 including vaporizing the working fluid and supplying it to said one of the modules, mixing superheated, heat depleted working fluid from said one of the modules with liquid working fluid for desuperheating the vaporized working fluid before it is supplied to the input of said other of the modules.
Claim 10
Dependent Claim
23 words
A method according to claim 7 wherein the liquid fluid mixed with the superheated, heat depleted working fluid is preheated liquid working fluid.
Claim 11
Dependent Claim
34 words
Method according to claim 8 wherein mixing of the liquid working fluid with the superheated, heat depleted working fluid is achieved by spraying the liquid working fluid into the superheated, heat depleted working fluid.
Claim 12
Dependent Claim
13 words
Method according to claim 9 wherein said working fluid is an organic fluid.
Claim 13
Dependent Claim
191 words
A Rankine cycle power plant comprising: a) a preheater for preheating liquid working fluid; b) a vaporizer for vaporizing preheated liquid working fluid produced by said preheater; c) a first turbine module having an input for receiving vaporized working fluid produced by said vaporizer and having an output shaft, said first module being responsive to vaporized working fluid for expanding the working fluid to produce work at the output shaft and heat depleted working fluid that is superheated; d) a second turbine module having an input for receiving heat depleted working fluid from the first module and having an output shaft, said second module being responsive to vaporized working fluid for expanding the working fluid to produce work at the output shaft and heat depleted working fluid that is superheated; e) an electric generator located between said modules and coupled to their output shafts; f) means for supplying superheated, heat depleted working fluid from the first module to the input of the second module; and g) a condenser for condensing heat depleted working fluid produced by said second module, and means for supplying condensate produced by the condenser to the preheater.
Claim 14
Dependent Claim
191 words
A Rankine cycle power plant comprising: a) a preheater for preheating liquid working fluid; b) a vaporizer for vaporizing preheated liquid working fluid produced by said preheater; c) a first turbine module having an input for receiving vaporized working fluid produced by said vaporizer and having an output shaft, said first module being responsive to vaporized working fluid for expanding the working fluid to produce work at the output shaft and heat depleted working fluid that is superheated; d) a second turbine module having an input for receiving heat depleted working fluid from the first module and having an output shaft, said second module being responsive to vaporized working fluid for expanding the working fluid to produce work at the output shaft and heat depleted working fluid that is superheated; e) an electric generator located between said modules and coupled to their output shafts; f) means for supplying superheated, heat depleted working fluid from the first module to the input of the second module; and g) a condenser for condensing heat depleted working fluid produced by said second module, and means for supplying condensate produced by the condenser to the preheater.
Claim 15
Dependent Claim
60 words
A power plant according to claim 11 including a mixer interposed between said first and second modules through which superheated, heat depleted working fluid from said first module is transferred to the input of the second module, and means for supplying liquid working fluid to said mixer for desuperheating the working fluid supplied to the input of said second module.
Claim 16
Dependent Claim
23 words
A power plant according to claim 12 wherein the liquid working fluid supplied to said mixer is working fluid produced by said preheater.
Claim 17
Dependent Claim
28 words
A power plant according to claim 12 wherein the liquid working fluid supplied to said mixer is sprayed into the superheated, heat depleted working fluid in the mixer.
Claim 18
Dependent Claim
13 words
Apparatus according to claim 1 wherein said working fluid is an organic fluid.
Claim 19
Dependent Claim
11 words
Apparatus according to claim 1 wherein said working fluid is pentane.
Claim 20
Dependent Claim
14 words
A method according to claim 6 wherein said working fluid is an organic fluid.
Claim 21
Dependent Claim
12 words
A method according to claim 6 wherein said working fluid is pentane.
Claim 22
Dependent Claim
171 words
Apparatus for producing power comprising: a) a plurality of systems each having: (1) a pair of multi-stage turbines, each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft, and heat depleted working fluid that is superheated; (2) an electric generator located between said modules and directly coupled to their respective output shafts; (3) means for supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the module; (4) a vaporizer for supplying vaporized working fluid to said one of the modules; and (5) a preheater for supplying heated working fluid to said vaporizer; b) means for serially supplying medium or low temperature fluid from a low grade heat source to the vaporizers to produce heat depleted source fluid; and c) means for supplying heat depleted source fluid to the preheaters in parallel.
Claim 23
Dependent Claim
171 words
Apparatus for producing power comprising: a) a plurality of systems each having: (1) a pair of multi-stage turbines, each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft, and heat depleted working fluid that is superheated; (2) an electric generator located between said modules and directly coupled to their respective output shafts; (3) means for supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the module; (4) a vaporizer for supplying vaporized working fluid to said one of the modules; and (5) a preheater for supplying heated working fluid to said vaporizer; b) means for serially supplying medium or low temperature fluid from a low grade heat source to the vaporizers to produce heat depleted source fluid; and c) means for supplying heat depleted source fluid to the preheaters in parallel.
Claim 24
Dependent Claim
13 words
Apparatus according to claim 19 wherein said working fluid is an organic fluid.
Claim 25
Dependent Claim
11 words
Apparatus according to claim 19 wherein said working fluid is pentane.
Claim 26
Independent Claim
173 words
A method for producing power using a plurality of systems each having: (1) a pair of multi-stage turbines, each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft, and heat depleted working fluid that is superheated; (2) an electric generator located between said modules and directly coupled to their respective output shafts; (3) means for supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the module; (4) a vaporizer for supplying vaporized working fluid to said one of the modules; and (5) a preheater for supplying heated working fluid to said vaporizer; said method comprising the steps of: a) serially supplying medium or low temperature fluid from a low grade heat source to the vaporizers to produce heat depleted source fluid; and b) supplying said depleted source fluid to the preheaters in parallel.
Claim 27
Independent Claim
173 words
A method for producing power using a plurality of systems each having: (1) a pair of multi-stage turbines, each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft, and heat depleted working fluid that is superheated; (2) an electric generator located between said modules and directly coupled to their respective output shafts; (3) means for supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the module; (4) a vaporizer for supplying vaporized working fluid to said one of the modules; and (5) a preheater for supplying heated working fluid to said vaporizer; said method comprising the steps of: a) serially supplying medium or low temperature fluid from a low grade heat source to the vaporizers to produce heat depleted source fluid; and b) supplying said depleted source fluid to the preheaters in parallel.
Claim 28
Dependent Claim
24 words
A method according to claim 22 wherein said step of serially supplying medium or low temperature fluid is carried out using hot geothermal water.
Claim 29
Dependent Claim
14 words
A method according to claim 22 wherein the working fluid is an organic fluid.
Claim 30
Dependent Claim
12 words
A method according to claim 22 wherein the working fluid is pentane.
Claim 31
Dependent Claim
130 words
Apparatus for producing power from a plurality of systems, comprising: a) a pair of multi-stage turbines, each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft, and heat depleted working fluid that is superheated; b) an electric generator located between said modules and directly coupled to their respective output shafts; c) means for supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the module; d) a vaporizer for supplying vaporized working fluid to said one of the modules; and (5) a preheater for supplying heated working fluid to said vaporizer.
Claim 32
Dependent Claim
130 words
Apparatus for producing power from a plurality of systems, comprising: a) a pair of multi-stage turbines, each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft, and heat depleted working fluid that is superheated; b) an electric generator located between said modules and directly coupled to their respective output shafts; c) means for supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the module; d) a vaporizer for supplying vaporized working fluid to said one of the modules; and (5) a preheater for supplying heated working fluid to said vaporizer.
Claim 33
Dependent Claim
51 words
Apparatus according to claim 26 including means for supplying medium or low temperature source fluid from a low grade heat source to the vaporizers of said systems in series to produce heat depleted source fluid, and means for supplying heat depleted source fluid to the preheaters of the systems in parallel.
Claim 34
Dependent Claim
14 words
An apparatus according to claim 26 wherein the working fluid is an organic fluid.
Claim 35
Dependent Claim
12 words
An apparatus according to claim 26 wherein the working fluid is pentane.
Claim 36
Independent Claim
136 words
A method for producing power using a plurality of systems each having: (1) a pair of multi-stage turbines, each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft, and heat depleted working fluid that is superheated; (2) an electric generator located between said modules and directly coupled to their respective output shafts; (3) a vaporizer for supplying vaporized working fluid to said one of the modules; and (4) a preheater for supplying heated working fluid to said vaporizer; said method comprising the steps of: a) supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the module.
Claim 37
Independent Claim
136 words
A method for producing power using a plurality of systems each having: (1) a pair of multi-stage turbines, each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid and producing work at the output shaft, and heat depleted working fluid that is superheated; (2) an electric generator located between said modules and directly coupled to their respective output shafts; (3) a vaporizer for supplying vaporized working fluid to said one of the modules; and (4) a preheater for supplying heated working fluid to said vaporizer; said method comprising the steps of: a) supplying superheated, heat depleted working fluid from one of the modules to the input of the other of the module.
Claim 38
Dependent Claim
53 words
A method according to claim 30 including the step of supplying medium or low temperature source fluid from a low grade heat source to the vaporizers of said systems in series to produce heat depleted source fluid, and means for supplying heat depleted source fluid to the preheaters of the systems in parallel.
Claim 39
Dependent Claim
24 words
A method according to claim 30 wherein said step of serially supplying medium or low temperature fluid is carried out using hot geothermal water.
Claim 40
Dependent Claim
14 words
A method according to claim 30 wherein the working fluid is an organic fluid.
Claim 41
Dependent Claim
12 words
A method according to claim 30 wherein the working fluid is pentane.
Claim 42
Dependent Claim
207 words
An organic Rankine cycle power plant comprising: a) a preheater for preheating organic liquid working fluid; b) a vaporizer for vaporizing preheated liquid working fluid produced by said preheater; c) a first turbine module having an input for receiving vaporized organic working fluid produced by said vaporizer and having an output shaft, said first module being responsive to vaporized organic working fluid from said preheater for expanding the organic working fluid to produce work at the output shaft and heat depleted organic working fluid that is superheated; d) a second turbine module having an input for receiving heat depleted organic working fluid from the first module and having an output shaft, said second module being responsive to vaporized organic working fluid from said first module for expanding the organic working fluid to produce work at the output shaft and heat depleted organic working fluid that is superheated, the turbine efficiency of the second turbine module being higher than the turbine efficiency of the first module; e) an electric generator located between said modules and coupled to their output shafts; and f) a condenser for condensing heat depleted organic working fluid produced by said second module into condensate; and g) means for supplying said condensate to the preheater.
Claim 43
Dependent Claim
207 words
An organic Rankine cycle power plant comprising: a) a preheater for preheating organic liquid working fluid; b) a vaporizer for vaporizing preheated liquid working fluid produced by said preheater; c) a first turbine module having an input for receiving vaporized organic working fluid produced by said vaporizer and having an output shaft, said first module being responsive to vaporized organic working fluid from said preheater for expanding the organic working fluid to produce work at the output shaft and heat depleted organic working fluid that is superheated; d) a second turbine module having an input for receiving heat depleted organic working fluid from the first module and having an output shaft, said second module being responsive to vaporized organic working fluid from said first module for expanding the organic working fluid to produce work at the output shaft and heat depleted organic working fluid that is superheated, the turbine efficiency of the second turbine module being higher than the turbine efficiency of the first module; e) an electric generator located between said modules and coupled to their output shafts; and f) a condenser for condensing heat depleted organic working fluid produced by said second module into condensate; and g) means for supplying said condensate to the preheater.
Claim 44
Dependent Claim
45 words
An organic Rankine cycle power plant according to claim 35 wherein said second turbine module comprises at least one turbine stage whose last stage is effective to substantially isolate upstream stages of said second turbine module from changes in back pressure on the second module.
Claim 45
Dependent Claim
42 words
An organic Rankine cycle power plant according to claim 36 wherein the Mach number of the last stage in the second turbine module is around 1.2 for substantially isolating the upstream stages of said second turbine module from changes in back pressure.
Claim 46
Dependent Claim
12 words
Apparatus according to claim 35 wherein said organic working fluid is pentane.
Claim 47
Dependent Claim
213 words
Apparatus for producing power comprising: (a) a plurality of systems each of which has: (1) a preheater for preheating organic liquid working fluid; (2) a vaporizer for vaporizing preheated organic liquid working fluid produced by said preheater; (3) a pair of multi-staged turbine modules each of which has an input for receiving vaporized organic working fluid and an output shaft, each module being responsive to vaporized organic working fluid applied to its input for expanding the working fluid and producing work at its output shaft and heat depleted working fluid that is superheated; (4) an electric generator located between said modules and coupled to the their output shafts; (5) means for supplying superheated, heat depleted organic working fluid produced by one of the pair of modules to the input of the other of the pair of modules; (6) the turbine efficiency of said other of the pair of modules being higher than the turbine efficiency of said one of the pair of modules; (b) means for supplying medium or low temperature fluid from a low grade heat source to all of the vaporizers of said systems in series to produce heat depleted source fluid; and (c) means for supplying heat depleted source fluid to all of the preheaters of the systems in parallel.
Claim 48
Dependent Claim
213 words
Apparatus for producing power comprising: (a) a plurality of systems each of which has: (1) a preheater for preheating organic liquid working fluid; (2) a vaporizer for vaporizing preheated organic liquid working fluid produced by said preheater; (3) a pair of multi-staged turbine modules each of which has an input for receiving vaporized organic working fluid and an output shaft, each module being responsive to vaporized organic working fluid applied to its input for expanding the working fluid and producing work at its output shaft and heat depleted working fluid that is superheated; (4) an electric generator located between said modules and coupled to the their output shafts; (5) means for supplying superheated, heat depleted organic working fluid produced by one of the pair of modules to the input of the other of the pair of modules; (6) the turbine efficiency of said other of the pair of modules being higher than the turbine efficiency of said one of the pair of modules; (b) means for supplying medium or low temperature fluid from a low grade heat source to all of the vaporizers of said systems in series to produce heat depleted source fluid; and (c) means for supplying heat depleted source fluid to all of the preheaters of the systems in parallel.
Claim 49
Dependent Claim
40 words
An organic Rankine cycle power plant according to claim 39 wherein the other of the modules of each pair comprises at least one turbine stage whose last stage is effective to substantially isolate upstream stages from changes in back pressure.
Claim 50
Dependent Claim
37 words
An organic Rankine cycle power plant according to claim 40 wherein the Mach number of the last stage in the second turbine module is around 1.2 for substantially isolating the upstream stages from changes in back pressure.
Claim 51
Dependent Claim
12 words
Apparatus according to claim 39 wherein said organic working fluid is pentane.
Claim 52
Dependent Claim
24 words
Apparatus for producing power according to claim 39 wherein said medium or low temperature fluid from said low grade heat source is geothermal fluid.
Claim 53
Dependent Claim
15 words
Apparatus for producing power according to claim 43 wherein said geothermal fluid is geothermal water.
Claim 54
Dependent Claim
24 words
Apparatus for producing power according to claim 19 wherein said medium or low temperature fluid from said low grade heat source is geothermal fluid.
Claim 55
Dependent Claim
15 words
Apparatus for producing power according to claim 45 wherein said geothermal fluid is geothermal water.
Claim 56
Independent Claim
200 words
A method for producing power comprising the steps of: a) supplying medium or low temperature fluid from a low grade heat source to a plurality of systems each of which has: (1) a preheater for preheating organic liquid working fluid; (2) a vaporizer for vaporizing preheated organic liquid working fluid produced by said preheater; (3) a pair of multi-staged turbine modules each of which has an input for receiving vaporized organic working fluid and an output shaft, each module being responsive to vaporized organic working fluid applied to its input for expanding the working fluid and producing work at its output shaft and heat depleted working fluid that is superheated; (4) an electric generator located between said modules and coupled to the their output shafts; (5) means for supplying superheated, heat depleted organic working fluid produced by one of the pair of modules to the input of the other of the pair of modules; (b) supplying medium or low temperature fluid from a low grade heat source to all of the vaporizers of said systems in series to produce heat depleted source fluid; and (c) supplying heat depleted source fluid to all of the preheaters of the systems in parallel.
Claim 57
Independent Claim
200 words
A method for producing power comprising the steps of: a) supplying medium or low temperature fluid from a low grade heat source to a plurality of systems each of which has: (1) a preheater for preheating organic liquid working fluid; (2) a vaporizer for vaporizing preheated organic liquid working fluid produced by said preheater; (3) a pair of multi-staged turbine modules each of which has an input for receiving vaporized organic working fluid and an output shaft, each module being responsive to vaporized organic working fluid applied to its input for expanding the working fluid and producing work at its output shaft and heat depleted working fluid that is superheated; (4) an electric generator located between said modules and coupled to the their output shafts; (5) means for supplying superheated, heat depleted organic working fluid produced by one of the pair of modules to the input of the other of the pair of modules; (b) supplying medium or low temperature fluid from a low grade heat source to all of the vaporizers of said systems in series to produce heat depleted source fluid; and (c) supplying heat depleted source fluid to all of the preheaters of the systems in parallel.
Claim 58
Dependent Claim
39 words
A method according to claim 47 wherein the step of supplying medium or low temperature fluid from said low grade heat source to the plurality of systems is carried out by supplying geothermal fluid to the plurality of systems.
Claim 59
Dependent Claim
28 words
A method according to claim 48 wherein the step of supplying geothermal fluid to the plurality of systems is carried out by supplying geothermal water to the systems.
Claim 60
Dependent Claim
36 words
A method according to claim 22 wherein the step of serially supplying medium or low temperature fluid from said low grade heat source to the vaporizers is carried out by supplying geothermal fluid to the vaporizers.
Claim 61
Dependent Claim
49 words
A method according to claim 6 wherein the step of positioning an electric generator between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules such that the modules rotate at a relatively low speed.
Claim 62
Dependent Claim
14 words
A method according to claim 51 wherein the relatively low speed is 1800 RPM.
Claim 63
Dependent Claim
49 words
A method according to claim 47 wherein the step of positioning an electric generator between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules such that the modules rotate at a relatively low speed.
Claim 64
Dependent Claim
14 words
A method according to claim 53 wherein the relatively low speed is 1800 RPM.
Claim 65
Dependent Claim
40 words
Apparatus according to claim 1 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 66
Dependent Claim
13 words
Apparatus according to claim 55 wherein the relatively low speed is 1800 RPM.
Claim 67
Dependent Claim
25 words
A power plant according to claim 11 wherein the electric generator positioned between the modules is directly coupled to the output shafts of the modules.
Claim 68
Dependent Claim
42 words
A power plant according to claim 57 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 69
Dependent Claim
13 words
Apparatus according to claim 58 wherein the relatively low speed is 1800 RPM.
Claim 70
Dependent Claim
40 words
Apparatus according to claim 19 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 71
Dependent Claim
13 words
Apparatus according to claim 60 wherein the relatively low speed is 1800 RPM.
Claim 72
Dependent Claim
40 words
Apparatus according to claim 26 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 73
Dependent Claim
13 words
Appartus according to claim 62 wherein the relatively low speed is 1800 RPM.
Claim 74
Dependent Claim
42 words
A power plant according to claim 35 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 75
Dependent Claim
15 words
A power plant according to claim 64 wherein the relatively low speed is 1800 RPM.
Claim 76
Dependent Claim
42 words
A power plant according to claim 11 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 77
Dependent Claim
15 words
A power plant according to claim 66 wherein the relatively low speed is 1800 RPM.
Claim 78
Dependent Claim
40 words
Apparatus according to claim 43 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 79
Dependent Claim
13 words
Apparatus according to claim 68 wherein the relatively low speed is 1800 RPM.
Claim 80
Dependent Claim
20 words
Apparatus for producing power according to claim 1 including means for supplying geothermal fluid to the vaporizers of said systems.
Claim 81
Dependent Claim
40 words
Apparatus according to claim 70 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 82
Dependent Claim
13 words
Apparatus according to claim 71 wherein the relatively low speed is 1800 RPM.
Claim 83
Dependent Claim
19 words
A power plant according to claim 11 including means for supplying geothermal fluid to the vaporizers of said systems.
Claim 84
Dependent Claim
25 words
A power plant according to claim 73 wherein the electric generator positioned between the modules is directly coupled to the output shafts of the modules.
Claim 85
Dependent Claim
42 words
A power plant according to claim 74 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 86
Dependent Claim
13 words
Apparatus according to claim 75 wherein the relatively low speed is 1800 RPM.
Claim 87
Dependent Claim
20 words
Apparatus for producing power according to claim 26 including means for supplying geothermal fluid to the vaporizers of said systems.
Claim 88
Dependent Claim
40 words
Apparatus according to claim 77 wherein the electric generator positioned between the modules permits the generator to be directly driven by the output shafts of the modules at the same rotational speed as the modules at a relatively low speed.
Claim 89
Dependent Claim
13 words
Apparatus according to claim 78 wherein the relatively low speed is 1800 RPM.
Claim 90
Dependent Claim
106 words
Apparatus for producing power comprising: a) a pair of multi-staged turbine modules each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid producing heat depleted working fluid and driving the output shaft; b) an electric generator located between said modules and directly coupled to their output shafts for driving the generator at the same speed as the turbine modules; and c) means for supplying heat depleted working fluid from one of the modules to the input of the other of the modules.
Claim 91
Dependent Claim
106 words
Apparatus for producing power comprising: a) a pair of multi-staged turbine modules each of which has an input for receiving vaporized working fluid and an output shaft, and each of which is responsive to vaporized working fluid applied to its input for expanding the working fluid producing heat depleted working fluid and driving the output shaft; b) an electric generator located between said modules and directly coupled to their output shafts for driving the generator at the same speed as the turbine modules; and c) means for supplying heat depleted working fluid from one of the modules to the input of the other of the modules.
References Cited (Backward Citations)
US2384587A
Cited
US3016712A
Cited
US3234734A
Cited
US3257806A
Cited
US3457725A
Cited
DE1626151A1
Cited
US3621653A
Cited
US3851474A
Cited
US3937024A
Cited
US4041709A
Cited
US4100745A
Cited
JPS54150532A
Cited
US4293384A
Cited
JPS58148205A
Cited
US4578953A
Cited
US4700543A
Cited
US4542625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-02 | 2000-01-01 | 2000-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-02 | 2004-01-01 | 2004-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-02 | 2008-01-01 | 2008-07-02 | $7700.00 | Window Closed / Lapsed |