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Riyaz Papar Phones & Addresses

  • The Woodlands, TX
  • Greenbelt, MD
  • Houston, TX
  • Montgomery, TX
  • 2620 Oakledge Ct, Vienna, VA 22181 (703) 319-4248
  • Annapolis, MD
  • 14 Split Rail Pl, Spring, TX 77382 (281) 296-7028

Work

Position: Professional/Technical

Education

Degree: Associate degree or higher

Emails

Publications

Us Patents

Method And Apparatus For Optimizing Refrigeration Systems

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US Patent:
8463441, Jun 11, 2013
Filed:
Oct 24, 2011
Appl. No.:
13/280302
Inventors:
Kevin Zugibe - New City NY, US
Riyaz Papar - The Woodlands TX, US
Assignee:
Hudson Technologies, Inc. - Pearl River NY
International Classification:
G01M 1/38
G05D 9/00
F25B 41/00
US Classification:
700275, 700 28, 62209
Abstract:
A control system for controlling a refrigeration system having an operating point, comprising: a memory configured to store a relationship of at least an evaporator efficiency, an evaporator heat load, a refrigerant amount in the evaporator, and a variable dependent on a non-volatile liquid mixed with refrigerant in the evaporator an input port configured to receive a signal corresponding to at least a measured evaporator heat load during operation; an output port configured to present an output to selectively alter an operating point of the evaporator, by altering the refrigerant amount in the evaporator and thereby changing the variable; and a processor, configured to receive the signal, access the memory; and generate the output to selectively move toward an optimum operating point. A corresponding method and refrigeration system are provided.

Method And Apparatus For Optimizing Refrigeration Systems

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US Patent:
8046107, Oct 25, 2011
Filed:
Sep 23, 2009
Appl. No.:
12/565147
Inventors:
Kevin Zugibe - New City NY, US
Riyaz Papar - The Woodlands TX, US
Assignee:
Hudson Technologies, Inc. - Pearl River NY
International Classification:
G01M 1/38
G05D 9/00
F25B 41/00
US Classification:
700275, 700 28, 62209
Abstract:
A refrigeration system comprising a compressor for compressing a refrigerant, a condenser for condensing refrigerant to a liquid, an evaporator for evaporating liquid refrigerant from the condenser to a gas, an inner control loop for optimizing a supply of liquid refrigerant to the evaporator, and an outer control loop for optimizing a level of refrigerant in the evaporator, said outer control loop defining a supply rate for said inner control loop based on an optimization including measurement of evaporator performance, and said inner control loop optimizing liquid refrigerant supply based on said defined supply rate. Independent variables, such as proportion of oil in refrigerant, amount of refrigerant, contaminants, non-condensibles, scale and other deposits on heat transfer surfaces, may be estimated or measured. A model of the system and/or a thermodynamic model approximating the system, for example derived from temperature and pressure gages, as well as power computations or measurements, is employed to determine or estimate the effect on efficiency of deviance from an optimal state. Various methods are provided for returning the system to an optimal state, and for calculating a cost-effectiveness of employing such processes.

Method And Apparatus For Optimizing Refrigeration Systems

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US Patent:
20070256432, Nov 8, 2007
Filed:
Dec 9, 2003
Appl. No.:
10/730791
Inventors:
Kevin Zugibe - Greenwood Lake NY, US
Riyaz Papar - The Woodlands TX, US
International Classification:
F25B 1/00
US Classification:
062115000, 062216000
Abstract:
A refrigeration system comprising a compressor for compressing a refrigerant, a condenser for condensing refrigerant to a liquid, an evaporator for evaporating liquid refrigerant from the condenser to a gas, an inner control loop for optimizing a supply of liquid refrigerant to the evaporator, and an outer control loop for optimizing a level of refrigerant in the evaporator, said outer control loop defining a supply rate for said inner control loop based on an optimization including measurement of evaporator performance, and said inner control loop optimizing liquid refrigerant supply based on said defined supply rate. Independent variables, such as proportion of oil in refrigerant, amount of refrigerant, contaminants, non-condensibles, scale and other deposits on heat transfer surfaces, may be estimated or measured. A model of the system and/or a thermodynamic model approximating the system, for example derived from temperature and pressure gages, as well as power computations or measurements, is employed to determine or estimate the effect on efficiency of deviance from an optimal state. Various methods are provided for returning the system to an optimal state, and for calculating a cost-effectiveness of employing such processes.

Method And Apparatus For Optimizing Refrigeration Systems

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US Patent:
20130269376, Oct 17, 2013
Filed:
Jun 10, 2013
Appl. No.:
13/913664
Inventors:
Riyaz Papar - The Woodlands TX, US
International Classification:
F25B 49/02
G01N 25/18
US Classification:
62115, 62126, 702136
Abstract:
A control system for controlling a refrigeration system having an operating point, comprising: a memory configured to store a relationship of at least an evaporator efficiency, an evaporator heat load, a refrigerant amount in the evaporator, and a variable dependent on a non-volatile liquid mixed with refrigerant in the evaporator an input port configured to receive a signal corresponding to at least a measured evaporator heat load during operation; an output port configured to present an output to selectively alter an operating point of the evaporator, by altering the refrigerant amount in the evaporator and thereby changing the variable; and a processor, configured to receive the signal, access the memory; and generate the output to selectively move toward an optimum operating point. A corresponding method and refrigeration system are provided.
Riyaz A Papar from The Woodlands, TX, age ~53 Get Report