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

Patent ·
OSTI ID:1374547
; ;

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, LLC
Patent Number(s):
9,726,410
Application Number:
14/828,595
OSTI ID:
1374547
Resource Relation:
Patent File Date: 2015 Aug 18
Country of Publication:
United States
Language:
English

References (19)

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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
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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

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