Praxair Technology, Inc.

Union Carbide Corporation

Union Carbide Chemicals and Plastics Company, Inc.

Arun Acharya

Bayram Arman

Dante Patrick Bonaquist

John Henri Royal

Jeffert John Nowobilski

Joseph Alfred Weber

Christian Friedrich Gottzmann

James Joseph Volk

Walter Joseph Olszewski

Gary Dee Lang

Frank Notaro

William E BeVier

Mohammad Abdul-Aziz Rashad

Michael F Patterson

Richard C Fitzgerald

Harry Cheung

Richard A Novak

Kenneth Kai Wong

Carl Joseph Heim

Barry Alan Minbiole

Kenneth C Kather

Al-Khalique Shariff Hamilton

Steve A Richards

Henry Edward Howard

Michael James Lockett

James Smolarek

Thomas John Bergman, Jr

Nancy Jean Lynch

M Mushtaq Ahmed

Richard A Victor

John H Ziemer

Norman Henry White

Neno T Nenov

James B Wulf

Mark J Roberts

Bryce Mark Rampersad

Vijayaraghavan Srinivasan

James Stanley Schneider

Raymond P Roberge

Jalal Hunain Zia

Alan Barnard Stewart

Guoming Zhong

Brian Michael Meredith

Robert Zawierucha

Mushtaq M Ahmed

Alfred M Czikk

James John Carlins

Christian Fredrich Gottzmann

Mohannad Abdul-Aziz Rashad

William E Be Vier

Eriks Arvids Niparts

Vincent Kotsubo

Michael A Marchese

Vance Goble, Jr

William Martin Greene, Iii

John Henry Royal

A superconducting magnet system wherein a cryocooler provides refrigeration to a cryogenic shield for the superconducting magnet and a heat pipe extends from the cryogenic shield to a cryogen vessel for the provision of supplementary refrigeration.

Superconducting magnet system with supplementary heat pipe refrigeration

A method for operating a cryocooler which provides opportunity for timely intervention prior to failure thus enhancing the reliability of the provision of the refrigeration wherein temperature trending of at least one cryocooler component or the refrigeration load is monitored and used to calculate a service time.

Method for operating a cryocooler using temperature trending monitoring

A cryocooler system having at least one flow straightener which has a system of grooves on its perforated surface for enhancing gas flow uniformity through the system wherein pulsing gas which does not initially pass through the flow straightener through a perforation flows along the surface of the flow straightener within a groove prior to passing through a perforation and is effectively redistributed across the surface of the flow straightener and thus the cross section of the regenerator or thermal buffer tube.

Cryocooler with grooved flow straightener

A method for operating a cryocooler wherein some cryocooler working gas is diverted from the pressure wave pathway before passing to the cold portion of the cryocooler, passed to a getter for adsorptive cleaning of contaminants, and returned to the pressure wave pathway at a warm portion of the pressure wave pathway.

Cryocooler operation with getter matrix

A pulse tube system for generating refrigeration for uses such as in magnetic resonance imaging systems wherein an oil-free compressor operating at a higher frequency generates pulsing gas which undergoes a frequency reduction and drives the pulse tube system at a more efficient lower frequency.

Low frequency pulse tube system with oil-free drive

A low void pressure swing adsorption system wherein flow movement and pressure pulse are influenced from the same source comprised of at least one hermetically sealed vessel containing an adsorbent bed with an inlet coupled to the adsorbent bed by way of an inlet header and an outlet coupled to the adsorbent bed by way of an outlet header. Void volume of the inlet and outlet headers can be limited to less than 20% of the adsorbent bed volume, preferably to less than 10%, and most preferably to less than 5%, by mounting high pressure source(s) and/or low pressure sink(s) proximate to, or nearly proximate to, the adsorbent bed/vessel. Low void volumes and reduced cycle times may be achieved in all bed configurations, including flat header beds, segmented beds, and vertical beds. Radial beds may be configured so that the void volume of the inlet and outlet headers is less than 50% of the volume of the radial adsorbent bed, preferably to less than 20%, and most preferably to less than

Low void adsorption systems and uses thereof

A method for operating a cryocooler which provides opportunity for timely intervention prior to failure thus enhancing the reliability of the provision of the refrigeration wherein contaminant concentration downstream of a compressor but upstream of the cryocooler is monitored and the time rate of change of the contaminant concentration is used to calculate a service time.

Method for operating a cryocooler using on line contaminant monitoring

A refrigeration generation system wherein a frequency modulating mechanical resonator is positioned between a pressure wave generator and a cryocooler and serves to reduce the frequency of the oscillating gas emanating from the pressure wave generator so that it more closely comports with a more efficient operating frequency of the cryocooler.

Cryocooler system with frequency modulating mechanical resonator

A system for providing industrial gas to a use point in relatively small quantities that would otherwise require the use of high pressure gas cylinders, wherein industrial gas is generated from a feed, liquefied using refrigeration generated by a refrigeration system, and stored in a storage vessel prior to provision to the use point. The preferred refrigeration system is a pulse tube system powered by gas associated with the industrial gas generation system.

Cryogenic system for providing industrial gas to a use point

A pulse tube refrigeration system wherein the pulse tube working gas is cooled to a defined first stage temperature and is brought to a defined second stage temperature by operation of a regenerator and pulse tube, which are in flow communication through a cold heat exchanger, prior to providing refrigeration to a high temperature superconductor.

Multistage pulse tube refrigeration system for high temperature super conductivity

A system for providing refrigeration to a superconducting device wherein a cooling fluid is cooled by receiving refrigeration from one or more cryocoolers and then is warmed by indirect heat exchange with ballast liquid thereby providing cooling to the ballast liquid prior to providing refrigeration to the superconducting device.

Cryogenic superconductor cooling system

A method for refrigerating a high temperature superconducting device to maintain superconducting operating conditions wherein a first heat transfer means such as a first heat transfer fluid is cooled to a temperature greater than the temperature of saturated liquid nitrogen and is used for ambient heat intercept while a second heat transfer means such as a second heat transfer fluid is cooled to a temperature within the high temperature superconductivity temperature operating range to maintain superconducting operating conditions.

Multilevel refrigeration for high temperature superconductivity

A pulse tube refrigeration system, having a pulse generator, a regenerator and a pulse tube, comprising a work transfer tube interposed between the pulse generator and the regenerator wherein the work transfer tube has a cross section at the end proximate the pulse generator which differs from the cross sectional area proximate the regenerator, enabling a reduction in heat transfer due to streaming within the work transfer tube.

Pulse tube refrigeration system with tapered work transfer tube

A method for providing refrigeration to a refrigeration load which enables the use of environmentally friendly refrigerants with lower power consumption than with conventional refrigerants wherein the low side pressure of the circuit exceeds the critical pressure of the refrigerant fluid and the refrigerant fluid is compressed to a higher supercritical pressure prior to expansion.

Supercritical refrigeration system

A system for generating refrigeration wherein a hot process fluid is used to drive a thermoacoustic engine and residual heat from the process fluid is used to desorb refrigerant from a high pressure absorbent heat pump solution with the resulting refrigerant expanded to generate refrigeration prior to being reabsorbed by the absorbent.

Integrated absorption heat pump thermoacoustic engine refrigeration system

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East Amherst, NY, United States of America

Arun Acharya