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Method of making foam in an energy efficient compressor

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TLDR
An energy efficient hermetic compressor for compressing hydrofluorocarbon refrigerants is described in this paper, which includes a motor compressor unit with a rotating oil pickup tube to which an oil paddle is attached.
Abstract
An energy efficient hermetic compressor for compressing hydrofluorocarbon refrigerants. The compressor includes a motor compressor unit with a rotating oil pickup tube to which an oil paddle is attached. The oil paddle rotates in a base lubricant of polyol ester mixed with a siloxane ester foaming agent. The combination of the foaming additive with the oil paddle creates a foam layer that floats in the oil sump to reduce the sound level of the compressor.

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Resistive suction muffler for refrigerant compressors

TL;DR: In this article, a resistive muffler (50, 250, 350) attenuates sound generated by the gas intake and suction valves of a refrigerant compressor, which is assembled inline with the suction gas flow of the compressor and positioned within the compressor housing.
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A process for foaming a wet hydrocarbon composition

TL;DR: A composition of a wet hydrocarbon foaming agent including a siloxane can foam wet hydrocarbons as discussed by the authors, which can be used in oil and gas production for gas lift and foam blocking applications.
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References
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Lubricant for refrigerant heat transfer fluids

TL;DR: Esters and mixtures of esters of polyhydric alcohols, eg, of pentaerythritol, in which at least 22 number percent of the acyl groups in the esters are either branched or contain no more than six carbon atoms, are effective lubricants and/or base stocks for chlorine-free fluorocarbon refrigerant heat transfer fluids as discussed by the authors.
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Hermetic motor-compressor

TL;DR: In this article, a hermetic motor compressor for compressing refrigerant gas in air conditioners or refrigerators is described, which includes a motor compressor disposed in a closed housing and consisting of a motor section and a compressor section formed integrally with each other.
Patent

Compositions and process for use in refrigeration

TL;DR: In this paper, a blend of at least 10 % of 1,1,2,2-tetrafluoroethane with at least ten % of one of 1.1, 1, 2, 2-tfetrafluoromethane and pentafluoroethylene as refrigerant mixed with a mono- or di-functional polyalkylene glycol based on 25-75 % propylene oxide and 75-25 % ethylene oxide having an SUS viscosity at 100 °F of 100 to 1200, is disclosed for use in
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Refrigerant lubricant compositions

TL;DR: In this paper, antiwear additives for refrigerant lubricant compositions and refrigerant lubes containing them were disclosed for use in compression refrigeration applications, and the antiwear additive was used in compression fronterization applications.
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Esterified polyglycol lubricants for refrigeration compressors

TL;DR: Refrigeration fluid compositions for compression refrigeration which have an upper solution critical temperature equal to or greater than about 35° C are composed of selected hydrochlorofluorocarbons and hydrofluoroccarbons with esterified polyether polyols in which at least 30% of the hydroxyls are esterification.