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Title: Non-intrusive refrigerant charge indicator

Abstract

A non-intrusive refrigerant charge level indicator includes a structure for measuring at least one temperature at an outside surface of a two-phase refrigerant line section. The measured temperature can be used to determine the refrigerant charge status of an HVAC system, and can be converted to a pressure of the refrigerant in the line section and compared to a recommended pressure range to determine whether the system is under-charged, properly charged or over-charged. A non-intrusive method for assessing the refrigerant charge level in a system containing a refrigerant fluid includes the step of measuring a temperature at least one outside surface of a two-phase region of a refrigerant containing refrigerant line, wherein the temperature measured can be converted to a refrigerant pressure within the line section.

Inventors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175280
Patent Number(s):
6,868,678
Application Number:
10/106,556
Assignee:
Ut-Battelle, LLC (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Mei, Viung C., Chen, Fang C., and Kweller, Esher. Non-intrusive refrigerant charge indicator. United States: N. p., 2005. Web.
Mei, Viung C., Chen, Fang C., & Kweller, Esher. Non-intrusive refrigerant charge indicator. United States.
Mei, Viung C., Chen, Fang C., and Kweller, Esher. Tue . "Non-intrusive refrigerant charge indicator". United States. https://www.osti.gov/servlets/purl/1175280.
@article{osti_1175280,
title = {Non-intrusive refrigerant charge indicator},
author = {Mei, Viung C. and Chen, Fang C. and Kweller, Esher},
abstractNote = {A non-intrusive refrigerant charge level indicator includes a structure for measuring at least one temperature at an outside surface of a two-phase refrigerant line section. The measured temperature can be used to determine the refrigerant charge status of an HVAC system, and can be converted to a pressure of the refrigerant in the line section and compared to a recommended pressure range to determine whether the system is under-charged, properly charged or over-charged. A non-intrusive method for assessing the refrigerant charge level in a system containing a refrigerant fluid includes the step of measuring a temperature at least one outside surface of a two-phase region of a refrigerant containing refrigerant line, wherein the temperature measured can be converted to a refrigerant pressure within the line section.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 22 00:00:00 EST 2005},
month = {Tue Mar 22 00:00:00 EST 2005}
}

Patent:

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