University of Illinois Urbana-Champaign

An Ultrasonic Device for Measuring the Oil Concentration in Flowing Liquid Refrigerant

Meyer, J.J.; Jabardo, J.M.S.

Content Files
TR024.pdf

Permalink

https://hdl.handle.net/2142/9725

Description

Title
An Ultrasonic Device for Measuring the Oil Concentration in Flowing Liquid Refrigerant
Author(s)
  • Meyer, J.J.
  • Jabardo, J.M.S.
Issue Date
1992-09
Keyword(s)
liquid refrigerant
Date of Ingest
2009-03-13T00:48:23Z
Abstract
Liquid refrigerant/oil concentrations in a flowing system were monitored using speed of sound and temperature measurements. Data were taken for R12 with 3GS and 5GS oils and an R-134a/Ester mixture with concentrations ranging from 0.0 to 10.64 and 0.0 to 9.11 percent by mass, respectively. Temperatures for the tests ranged from -22°C (-7.6 OF) to 40 °C (104 OF). Analysis of the data showed the predicted oil concentration depends linearly on both acoustic velocity and temperature. The technique was very reliable, with uncertainties ofless than 0.23 weight percent for the R-12 mixtures and 0.26 weight percent for the R-134a mixtures at typical system concentrations. A slight dependence of acoustic velocity on pressure was found.
Publisher
Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report Name or Number
Air Conditioning and Refrigeration Center TR-24
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/9725
Sponsor(s)/Grant Number(s)
Air Conditioning and Refrigeration Center Project 05

Owning Collections

Technical Reports - Air Conditioning and Refrigeration Center PRIMARY