Foaming characteristics of HFC refrigerants

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · ASHRAE Journal

OSTI ID:516693

Goswami, D Y; Shah, D O; Jotshi, C K; Bhagwat, S; Leung, M; Gregory, A S ^[1]

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1. Univ. of Florida, Gainesville, FL (United States)

A detailed study was conducted at the University of Florida to experimentally determine the absorption and desorption rates of HFC and blended refrigerants in polyolester lubricant and to define the characteristics of the foam formed when the refrigerant leaves the refrigerant/lubricant mixture after being exposed to a pressure drop. The alternative refrigerants examined include HFC-32 (R-32), R-125, R-134a, and R-143a. Also examined were blended refrigerants R-404A, R407C, and R410A. These refrigerants were tested with two ISO 68 polyolesters (Witco SL68 and ICI RL 68H). To establish baseline results, refrigerants R-12 and R-22 were tested with mineral oils ISO32 (3GS) and ISO 68 (4GS).

• OSTI ID: 516693
• Journal Information: ASHRAE Journal, Vol. 39, Issue 6; Other Information: PBD: Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
PHYSICAL PROPERTIES
HALOGENATED ALIPHATIC HYDROCARBONS
REFRIGERANTS
SURFACE TENSION
FOAMS
ABSORPTIVITY
SORPTIVE PROPERTIES
MATERIAL SUBSTITUTION