Ormat Industries Ltd.

Ormat Technologies, Inc.

Ormat Turbines (1965) Ltd.

Other

Ormat Inc.

Ormat Turbines, Ltd.

Geophysical Engineering Company

Solmat Systems, Ltd.

Orlev Scientific Computing, Ltd.

Ormat Process Technologies, Inc.

Oramt Technologies Inc.

4e Co.

Ormai Industries Ltd.

Lucien Y Bronicki

Joseph Sinai

Benjamin Doron

Nadav Amir

Uriyel Fisher

Uri Kaplan

Daniel Goldman

Yoel Gilon

Gad Assaf

Lawrence Sirovich

Eli Yaffe

Boris Siniakevith

Joseph Sinia

Shlomo Bugdagzad

Uriel Fisher

Asher Elovic

Richard L Hood

Ohad Zimron

Alex Moritz

Eugene Levich

Moshe Grassiani

Mark Khaskin

Dov Berger

Yoram Bronicki

Randall S Goldstein

David Machlev

Danny Batscha

Moshe Grassianni

Zvi Krieger

Marat Klochko

Phillip B Rettger

Joseph Shinai

Shlomo Shitrit

Naday Amir

Philip B Rettger

Gilbert Riollet

Meir Rigal

Chaim Sugarmen

Hilel Legmann

Yeshayahu Greitzer

Haim Hershman

Shlomo Budagzad

Dan Batscha

Evgene Levich

Sture Karlsson

Josh Nordquist

Gerard Lehmann

Gerard Lehman

Josef Sinai

Thomas Buchanan

Amir Karas

Aba Nathan

Yechiel Rifner

Michael L Kaleikini

Meir Regal

Dan Batsha

Asaf Mendelovitz

A heat exchanger system for cooling liquid having a plurality of finned tube arrays and a plurality of fans for inducing air through the finned tube array comprising: at least one wind deflector installed along the long side of the finned tube arrays on at least one side of the arrays. The present invention for includes a method for minimizing the undesired effect of wind on the operation of a heat exchanger system for cooling liquid having a plurality of finned tube arrays and a plurality of fans for inducing air through the finned tube array, the method comprising the steps of: setting the angle of deflection of the wind deflectors other than the angle of deflection of the uppermost position of the wind deflectors; collecting readings of outlet temperature sensor of the heat exchanger, ambient temperature, wind sensor and inlet air pressure sensor of the heat exchanger; recording readings of outlet temperature sensor of the heat exchanger, ambient temperature, wind sensor and inlet air pressure sensor of the heat exchanger; comparing readings of outlet temperature sensor of the heat exchanger, ambient temperature, wind sensor and inlet air pressure sensor of the heat exchanger to previous readings; and carrying out a correction command if the readings have changed.

Device and method for minimizing the effect of ambient conditions on the operation of a heat exchanger

A method for producing power from two geothermal heat sources includes: separating a first geothermal fluid from a first geothermal heat source into geothermal vapor comprising steam and non-condensable gases, and geothermal brine; supplying the geothermal vapor to a vaporizer; vaporizing a preheated motive fluid using heat from the geothermal vapor, wherein the heat content in the geothermal vapor exiting the flash tank is only enough to vaporize the preheated motive fluid in the vaporizer; expanding the vaporized motive fluid in a vapor turbine producing power and expanded vaporized motive fluid; condensing the expanded vaporized motive fluid to produce condensed motive fluid; and preheating the condensed motive fluid in a preheater using heat from a second geothermal fluid from a second geothermal heat source having a lower temperature and salinity content that the first geothermal fluid, thereby producing the preheated motive fluid, make-up water and heat-depleted geothermal brine.

Method and apparatus for producing power from two geothermal heat sources

A heat exchanger system for cooling liquid includes a generally rectangular arrangement of a plurality of horizontally spaced finned tube arrays arranged above the ground, the arrangement having longer sides extending in a length direction and shorter sides extending in a width direction. A plurality of fans are provided above the finned tube arrays for inducing air through the finned tube arrays, wherein at least two of said fans are mutually spaced in the width direction. At least one wind deflector is provided adjacent one of the longer sides, wherein the at least one wind deflector is installed on the ground separately from any of the plurality of finned tube arrays.

A method of minimizing the effect of wind on a heat exchanger system includes setting the pivot angle of a wind deflector to an initial angle; collecting and recording a current reading of one of an outlet temperature sensor, a wind speed sensor, an ambient temperature sensor, or a heat exchanger inlet air pressure sensor; comparing the current reading of the sensor to a previous reading; and changing the pivot angle of the wind deflector from an initial angle when the current sensor reading is changed from the previous reading.

A power system for delivering a custom level of electrical power to an industrial or commercial facility includes a local generator connected to a turbine operating in accordance with an organic Rankine or steam Rankine cycle. The local generator has a capacity at least greater than a maximum anticipated power level needed for the electrical needs of a local industrial or commercial facility. One or more control devices are operatively connected to the local generator for regulating active and reactive power generated by the generator. A controller directs the one or more control devices to regulate the generator such that the active power and reactive power generated by the generator are sufficient to satisfy active and reactive load conditions of local industrial or commercial facilities. Also, a flow control component is operatively connected to the main conduit for automatically limiting the flow of the motive fluid to the turbine module during base load conditions and for automatically increasing the flow of the motive fluid to the turbine module during variable load conditions.

Power system

For minimizing the effect of wind on a heat exchanger system having a plurality of finned tube arrays and a plurality of fans, a method includes providing a wind louver below one of the fans. The wind louver is arranged to divert wind flowing in an approximately horizontal direction below the one of the plurality of fans to instead flow in a direction that is more vertically upward as compared to the approximately horizontal direction. Readings of a heat exchanger outlet temperature, ambient temperature, wind, and inlet air pressure are collected and recorded, and compared to previous readings. The louver height is changed if the readings have changed.

A waste heat recovery system includes a high pressure turbine and a low pressure turbine, in which the high pressure turbine receives high pressure working fluid vapor, the low pressure turbine receives low pressure working fluid vapor and the high pressure turbine also supplies low pressure working fluid vapor to the low pressure turbine. A recuperator receives working fluid vapor from the low pressure turbine. The recuperator produces heated condensate, at least a portion of which is provided to a high pressure vaporizer. The high pressure vaporizer is configured to receive from a high temperature heat source and produces high pressure working vapor used to power the high pressure turbine. The remaining condensed fluid is provided to a low pressure vaporizer which is configured to receive heat from a low-temperature heat source, thereby producing low pressure working fluid vapor used to power the low pressure turbine.

Multi-level organic rankine cycle power system

The present invention provides a method for producing load-following power using low to medium temperature heat source fluid comprising the steps of: reducing the power level produced by a Rankine cycle power plant producing load-following power operating on a low to medium temperature heat source fluid during one period of time; storing heat not used during the first period of time; and using the heat stored for producing power during a second period of time.

Dispatchable power plant and method for using the same

The present invention provides a geothermal based heat utilization system for just about preventing scaling of geothermal fluid in a heat exchanger, comprising a mixing unit upstream to a heat exchanger of said system and in which separated brine, steam condensate and non-condensable gas portions are mixed so as to just about reconstruct the geothermal fluid to just about equilibrium conditions such that dissolved solids are assured not to precipitate in the heat exchanger.

System for processing brines

A method for producing power from geothermal fluid includes: separating the geothermal fluid in a flash tank into geothermal vapor comprising steam and non-condensable gases, and geothermal brine; supplying the geothermal vapor to a vaporizer; vaporizing a preheated motive fluid in the vaporizer using heat from the geothermal vapor to produce heat-depleted geothermal vapor and vaporized motive fluid, wherein the heat content in the geothermal vapor exiting the flash tank is only enough to vaporize the preheated motive fluid in the vaporizer; expanding the vaporized motive fluid in a vapor turbine producing power and expanded vaporized motive fluid; condensing the expanded vaporized motive fluid in a condenser to produce condensed motive fluid; and preheating the condensed motive fluid in a preheater using heat from the heat-depleted geothermal vapor and the geothermal brine, thereby producing the preheated motive fluid, make-up water and heat-depleted geothermal brine.

Method and apparatus for producing power from geothermal fluid

An air cooled, finned heat exchanger tube includes a metallic tube through which fluid to be cooled is flowable. The tube has an outer surface on which axially spaced axial indentations are formed over its circumference, and a plurality of axially spaced fins each of which has a main element formed with heat transfer promoting patterns and a base angled with respect to said main element. The base is frictionally and irremovably secured within a corresponding indentation so that said tube outer surface is completely covered.

Fin configuration for air cooled heat exchanger tubes

The present invention provides a hybrid geothermal power plant, comprising a photovoltaic module for generating direct current electrical power, a geothermal unit for utilizing heat content of a geothermal fluid extracted from a production well to produce power, and a controller for coordinating operation of the photovoltaic module and the geothermal unit such that the power plant generates a substantially uniform electrical output.

Hybrid geothermal power plant

In a method for increasing power plant efficiency during periods of variable heat input or at partial loads, a motive fluid is cycled through a Rankine cycle power plant having a vaporizer and a superheater such that the motive fluid is delivered to a turbine at a selected inlet temperature at full admission. A percentage of a superheated portion of the motive fluid during periods of variable heat input or at partial loads is adjusted while substantially maintaining the inlet temperature and a power plant thermal efficiency. A Rankine Cycle power plant includes a conduit circuit extending from a heat source to each of a vaporizer section and a superheater section for regulating flow therethrough of source heat fluid.

Apparatus and method for increasing power plant efficiency at partial loads

A power system includes a Rankine cycle local generator having a capacity greater than a maximum anticipated power level. One or more control devices are operatively connected to the local generator for regulating active and reactive power generated by the generator. Detectors are provided to sense active and reactive voltages. The controller directs the control devices to regulate the generator such that the active power and reactive power are sufficient to satisfy the active and reactive load conditions.

For increasing power plant efficiency during periods of variable heat input or at partial loads, a motive fluid is cycled through a Rankine cycle power plant having a vaporizer and a superheater such that the motive fluid is delivered to a turbine at a selected inlet temperature at full admission. A percentage of a superheated portion of the motive fluid is adjusted during periods of variable heat input or at partial loads while virtually maintaining the inlet temperature and power plant thermal efficiency.

Growing community of inventors

Yavne, Israel

Lucien Y Bronicki