公开(公告)号：US10969148B2

公开(公告)日：2021-04-06

申请号：US15714620

申请日：2017-09-25

Applicant: TRANE INTERNATIONAL INC.

Inventor： Stephen Anthony Kujak ,  Julie Ann Majurin ,  Randal Newton ,  Kenneth J. Schultz

IPC: G01N29/024 ,  F25B49/00 ,  G01N33/00 ,  G01N25/18 ,  G01N30/66

Abstract: A system for detecting if a refrigerant in an HVACR system is contaminated. The system includes a detector that detectes a property of a refrigerant gas in a vapor space and compares the detected property with a reference property for uncontaminated refrigerant gas. The detector determines that a contaminant is present in the refrigerant gas if the detected property is different from the reference property. The property detected by the dectector can be either a speed of sound through the refrigerant gas or a thermal conductivity of the refrigerant gas. Also disclosed is a method for detecting contamination of refrigerant gas in a HVACR system that includes detecting, by a detector, a property of refrigerant gas in a vapor space of the HVACR system.