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

Works referenced in this record:

Non-intrusive refrigerant charge indicator
patent, March 2005


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


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


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


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