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Real Time Oil Concentration Measurement in Automotive Air Conditioning by Ultraviolet Light Absorption
A method of r e a l time oil concentration measurment has been developed utilizing the effect of ultraviolet light absorption by lubricating oil in the liquid refrigerant line of an automotive air conditioning system. The light wavelengths from 200nm to 370nm are selected based on the ultraviolet li...
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| Published in: | SAE transactions 1991-01, Vol.100 (6), p.315-322 |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
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| container_end_page | 322 |
| container_issue | 6 |
| container_start_page | 315 |
| container_title | SAE transactions |
| container_volume | 100 |
| creator | Kutsuna, Kiyoharu Inoue, Yoshimitsu Mizutani, Takehito Sudo, Eiichi Araga, Toshimi |
| description | A method of r e a l time oil concentration measurment has been developed utilizing the effect of ultraviolet light absorption by lubricating oil in the liquid refrigerant line of an automotive air conditioning system. The light wavelengths from 200nm to 370nm are selected based on the ultraviolet light absorption sensitivity of the oils and refrigerants (CFC12,HFC134a). The effects of temperature, pressure and contaminantion on the absorbance of light are investigated in order to determine how these parameters affect the concentration measurement. The density changes of refrigerants are then compensated in the calculation for the oil concentration. The uncertainties of the overall concentration measurement are less than ± 0.1 weight percent at 1 weight percent concentration. A transient oil circulation of the automotive air conditioner is measured by using this method. |
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The light wavelengths from 200nm to 370nm are selected based on the ultraviolet light absorption sensitivity of the oils and refrigerants (CFC12,HFC134a). The effects of temperature, pressure and contaminantion on the absorbance of light are investigated in order to determine how these parameters affect the concentration measurement. The density changes of refrigerants are then compensated in the calculation for the oil concentration. The uncertainties of the overall concentration measurement are less than ± 0.1 weight percent at 1 weight percent concentration. A transient oil circulation of the automotive air conditioner is measured by using this method.</description><identifier>ISSN: 0096-736X</identifier><identifier>ISBN: 9781560912774</identifier><identifier>ISBN: 1560912774</identifier><identifier>EISSN: 2577-1531</identifier><language>eng</language><publisher>New York, NY: Society of Automotive Engineers, Inc</publisher><subject>Air compressors ; Air conditioning. Ventilation ; Applied sciences ; Calibration ; Energy ; Energy. Thermal use of fuels ; Exact sciences and technology ; Flow velocity ; Ground, air and sea transportation, marine construction ; Heating, air conditioning and ventilation ; Liquids ; Lubricants ; Refrigerants ; Refrigeration ; Road transportation and traffic ; Techniques, equipment. Control. 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The light wavelengths from 200nm to 370nm are selected based on the ultraviolet light absorption sensitivity of the oils and refrigerants (CFC12,HFC134a). The effects of temperature, pressure and contaminantion on the absorbance of light are investigated in order to determine how these parameters affect the concentration measurement. The density changes of refrigerants are then compensated in the calculation for the oil concentration. The uncertainties of the overall concentration measurement are less than ± 0.1 weight percent at 1 weight percent concentration. A transient oil circulation of the automotive air conditioner is measured by using this method.</description><subject>Air compressors</subject><subject>Air conditioning. Ventilation</subject><subject>Applied sciences</subject><subject>Calibration</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Flow velocity</subject><subject>Ground, air and sea transportation, marine construction</subject><subject>Heating, air conditioning and ventilation</subject><subject>Liquids</subject><subject>Lubricants</subject><subject>Refrigerants</subject><subject>Refrigeration</subject><subject>Road transportation and traffic</subject><subject>Techniques, equipment. Control. Metering</subject><subject>Ultraviolet radiation</subject><subject>Water temperature</subject><subject>Wavelengths</subject><issn>0096-736X</issn><issn>2577-1531</issn><isbn>9781560912774</isbn><isbn>1560912774</isbn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNo9zEtLAzEUBeDgA6y1P0HIQtwN5DFJJsuh-IJKQSu4G5KZpKZkJjXJFPrvbWlxdeGc79wLMCFMiAIzii_BTIoKM44kJkKUV2CCkOSFoPz7BtymtEGIYibIBNgPozxcud7ApfNwHobWDDmq7MIA341KYzT9IYFugPWYQx-y2xlYu3i0nTs6N6yh3sMvf9jtXPAmw4Vb_2RY6xTi9kjuwLVVPpnZ-U7B5_PTav5aLJYvb_N6UWwqwguibKmlMooRy0lrKZIMl9JqpFtOLO1w19kOGY0riSViFTe0ZboThpZYMzoFj6ev2xh-R5Ny07vUGu_VYMKYGswIZZjyA3w4Q5Va5W1UQ-tSs42uV3HfMMYlo9WB3Z_YJuUQ_-uy5JQgSukf_Pdu5Q</recordid><startdate>19910101</startdate><enddate>19910101</enddate><creator>Kutsuna, Kiyoharu</creator><creator>Inoue, Yoshimitsu</creator><creator>Mizutani, Takehito</creator><creator>Sudo, Eiichi</creator><creator>Araga, Toshimi</creator><general>Society of Automotive Engineers, Inc</general><general>Society of Automotive Engineers</general><scope>IQODW</scope></search><sort><creationdate>19910101</creationdate><title>Real Time Oil Concentration Measurement in Automotive Air Conditioning by Ultraviolet Light Absorption</title><author>Kutsuna, Kiyoharu ; Inoue, Yoshimitsu ; Mizutani, Takehito ; Sudo, Eiichi ; Araga, Toshimi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j826-2af4b9aea52f62cf3095149fb0bc62f3d1ddfd0eb189190586e3c5bd7e341b53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Air compressors</topic><topic>Air conditioning. Ventilation</topic><topic>Applied sciences</topic><topic>Calibration</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Exact sciences and technology</topic><topic>Flow velocity</topic><topic>Ground, air and sea transportation, marine construction</topic><topic>Heating, air conditioning and ventilation</topic><topic>Liquids</topic><topic>Lubricants</topic><topic>Refrigerants</topic><topic>Refrigeration</topic><topic>Road transportation and traffic</topic><topic>Techniques, equipment. Control. Metering</topic><topic>Ultraviolet radiation</topic><topic>Water temperature</topic><topic>Wavelengths</topic><toplevel>online_resources</toplevel><creatorcontrib>Kutsuna, Kiyoharu</creatorcontrib><creatorcontrib>Inoue, Yoshimitsu</creatorcontrib><creatorcontrib>Mizutani, Takehito</creatorcontrib><creatorcontrib>Sudo, Eiichi</creatorcontrib><creatorcontrib>Araga, Toshimi</creatorcontrib><collection>Pascal-Francis</collection><jtitle>SAE transactions</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kutsuna, Kiyoharu</au><au>Inoue, Yoshimitsu</au><au>Mizutani, Takehito</au><au>Sudo, Eiichi</au><au>Araga, Toshimi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Real Time Oil Concentration Measurement in Automotive Air Conditioning by Ultraviolet Light Absorption</atitle><jtitle>SAE transactions</jtitle><date>1991-01-01</date><risdate>1991</risdate><volume>100</volume><issue>6</issue><spage>315</spage><epage>322</epage><pages>315-322</pages><issn>0096-736X</issn><eissn>2577-1531</eissn><isbn>9781560912774</isbn><isbn>1560912774</isbn><abstract>A method of r e a l time oil concentration measurment has been developed utilizing the effect of ultraviolet light absorption by lubricating oil in the liquid refrigerant line of an automotive air conditioning system. The light wavelengths from 200nm to 370nm are selected based on the ultraviolet light absorption sensitivity of the oils and refrigerants (CFC12,HFC134a). The effects of temperature, pressure and contaminantion on the absorbance of light are investigated in order to determine how these parameters affect the concentration measurement. The density changes of refrigerants are then compensated in the calculation for the oil concentration. The uncertainties of the overall concentration measurement are less than ± 0.1 weight percent at 1 weight percent concentration. A transient oil circulation of the automotive air conditioner is measured by using this method.</abstract><cop>New York, NY</cop><pub>Society of Automotive Engineers, Inc</pub><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0096-736X |
| ispartof | SAE transactions, 1991-01, Vol.100 (6), p.315-322 |
| issn | 0096-736X 2577-1531 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_15235136 |
| source | JSTOR Archival Journals and Primary Sources Collection |
| subjects | Air compressors Air conditioning. Ventilation Applied sciences Calibration Energy Energy. Thermal use of fuels Exact sciences and technology Flow velocity Ground, air and sea transportation, marine construction Heating, air conditioning and ventilation Liquids Lubricants Refrigerants Refrigeration Road transportation and traffic Techniques, equipment. Control. Metering Ultraviolet radiation Water temperature Wavelengths |
| title | Real Time Oil Concentration Measurement in Automotive Air Conditioning by Ultraviolet Light Absorption |
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