Portable refrigerant charge meter and method for determining the actual refrigerant charge in HVAC systems

Gao, Zhiming; Abdelaziz, Omar; LaClair, Tim L.

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
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A24 - tobacco
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A42 - headwear
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Title: Portable refrigerant charge meter and method for determining the actual refrigerant charge in HVAC systems

Abstract

A refrigerant charge meter and a method for determining the actual refrigerant charge in HVAC systems are described. The meter includes means for determining an optimum refrigerant charge from system subcooling and system component parameters. The meter also includes means for determining the ratio of the actual refrigerant charge to the optimum refrigerant charge. Finally, the meter includes means for determining the actual refrigerant charge from the optimum refrigerant charge and the ratio of the actual refrigerant charge to the optimum refrigerant charge.

Inventors:: Gao, Zhiming; Abdelaziz, Omar; LaClair, Tim L.

Issue Date:: 2017-08-08

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1374547

Patent Number(s):: 9726410

Application Number:: 14/828,595

Assignee:: UT-Battelle, LLC

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS

G - PHYSICS G01 - MEASURING G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL

Show more

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
F25B49/005 - {of safety devices

G - PHYSICS G01 - MEASURING G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL
G01F23/22 - by measurement of physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
F25B2700/21163 - of the refrigerant at the outlet of the condenser
F25B2500/24 - Low amount of refrigerant in the system
F25B2500/19 - Calculation of parameters

Show less

DOE Contract Number:: AC05-00OR22725

Resource Type:: Patent

Resource Relation:: Patent File Date: 2015 Aug 18

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Gao, Zhiming, Abdelaziz, Omar, and LaClair, Tim L. Portable refrigerant charge meter and method for determining the actual refrigerant charge in HVAC systems.  United States: N. p., 2017. 
        Web.

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                    Gao, Zhiming, Abdelaziz, Omar, & LaClair, Tim L. Portable refrigerant charge meter and method for determining the actual refrigerant charge in HVAC systems.  United States.

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                    Gao, Zhiming, Abdelaziz, Omar, and LaClair, Tim L. Tue .  
        "Portable refrigerant charge meter and method for determining the actual refrigerant charge in HVAC systems".  United States.  https://www.osti.gov/servlets/purl/1374547.

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@article{osti_1374547,

  title        = {Portable refrigerant charge meter and method for determining the actual refrigerant charge in HVAC systems},

  author       = {Gao, Zhiming and Abdelaziz, Omar and LaClair, Tim L.},

  abstractNote = {A refrigerant charge meter and a method for determining the actual refrigerant charge in HVAC systems are described. The meter includes means for determining an optimum refrigerant charge from system subcooling and system component parameters. The meter also includes means for determining the ratio of the actual refrigerant charge to the optimum refrigerant charge. Finally, the meter includes means for determining the actual refrigerant charge from the optimum refrigerant charge and the ratio of the actual refrigerant charge to the optimum refrigerant charge.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2017},

  month        = {8}

}

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Similar Records

Title: Portable refrigerant charge meter and method for determining the actual refrigerant charge in HVAC systems

Abstract

Citation Formats

Apparatus for recovering and analyzing volatile refrigerants patent, September 1998

Non-intrusive refrigerant charge indicator patent, March 2005

Charge loss detection and prognostics for multi-modular split systems patent, January 2007

Fault diagnostics and prognostics based on distance fault classifiers patent, March 2007

Apparatus and method for determining refrigerant charge level patent, December 2009

Method and system for assessing a refrigerant charge level in a vehicle air conditioning system patent-application, December 2005

Automatic refrigerant charging apparatus patent-application, June 2006

Detection of refrigerant charge adequacy based on multiple temperature measurements patent-application, June 2007

Heat pump system having auxiliary water heating and heat exchanger bypass patent-application, February 2009

Motor-driven travelling body and high-speed charge method for motor-driven travelling body patent-application, March 2010

Method for determining refrigerant charge patent-application, April 2010

Refrigerant charge indication patent-application, April 2010

Power monitor for vapor compression equipment diagnostics patent-application, June 2011

Truck trailer refrigeration system patent-application, October 2011

High-speed charging power supply device and high-speed charging power supply method patent-application, November 2011

System and Method for Improving Charge Accuracy by Temperature Compensation patent-application, January 2013

Condensate-free outdoor air cooling unit patent-application, March 2013

Air Conditioner Self-Charging And Charge Monitoring System patent-application, June 2013

Refrigerant Charge Level Detection patent-application, October 2013

Apparatus for recovering and analyzing volatile refrigerants
patent, September 1998

Non-intrusive refrigerant charge indicator
patent, March 2005

Charge loss detection and prognostics for multi-modular split systems
patent, January 2007

Fault diagnostics and prognostics based on distance fault classifiers
patent, March 2007

Apparatus and method for determining refrigerant charge level
patent, December 2009

Method and system for assessing a refrigerant charge level in a vehicle air conditioning system
patent-application, December 2005

Automatic refrigerant charging apparatus
patent-application, June 2006

Detection of refrigerant charge adequacy based on multiple temperature measurements
patent-application, June 2007

Heat pump system having auxiliary water heating and heat exchanger bypass
patent-application, February 2009

Motor-driven travelling body and high-speed charge method for motor-driven travelling body
patent-application, March 2010

Method for determining refrigerant charge
patent-application, April 2010

Refrigerant charge indication
patent-application, April 2010

Power monitor for vapor compression equipment diagnostics
patent-application, June 2011

Truck trailer refrigeration system
patent-application, October 2011

High-speed charging power supply device and high-speed charging power supply method
patent-application, November 2011

System and Method for Improving Charge Accuracy by Temperature Compensation
patent-application, January 2013

Condensate-free outdoor air cooling unit
patent-application, March 2013

Air Conditioner Self-Charging And Charge Monitoring System
patent-application, June 2013

Refrigerant Charge Level Detection
patent-application, October 2013