Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Oil return"”.
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Study of transient oil migration at compressor and improved oil return
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Oil Price Movements and Equity Returns: Evidence from the GCC Countries
<p>This study examines to what extent how oil movements differently affect equity returns in general and sectoral levels of the GCC countries stock markets. Modeling the equity returns volatility requires using GARCH-type models. These models help to explore the pronounced differences of the …
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Oil Retention and Pressure Drop in Horizontal and Vertical Suction Lines with R410A / POE ISO 32
… to the compressor has the largest potential for oil retention. This paper presents results from an experimental apparatus that has been constructed to circulate POE (polyolester) oil and R410A at a controlled mass flux, OCR (oil in circulation ratio), and apparent superheat, and to directly …
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Investigation of oil retention and pressure drop in suction lines using R134a with AB ISO 32
In refrigeration systems, a small quantity of oil, meant for compressor lubrication, is removed from the compressor during operation, by the high velocity refrigerant vapor exiting it, which forms a mixture with the oil. This circulating refrigerant/lubricant mixture affects the system performance …
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Oil retention and pressure drop of R1234yf and R134a with POE ISO 32 in suction lines
… of the refrigeration systems a small quantity of oil is carried out of the compressor by high velocity vapor leaving the compressor discharge in the form of a mixture with the refrigerant. The circulating liquid which is a mixture of oil and refrigerant has the highest viscosity in the suction …