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Experimental investigation of liquid slugging in the suction mufflers of hermetic reciprocating compressors.
Number: 1267
Author(s) : BALCONI T. B., RODRIGUEZ T. T., DESCHAMPS C. J.
Summary
Compressor liquid slugging occurs when liquid refrigerant, lubricant oil, or a mixture of both reach the compression chamber. This phenomenon is detrimental to reciprocating compressors because it can damage valves and other components. This paper reports an experimental investigation of oil flow in a simplified geometry of suction muffler of small reciprocating compressor, aiming to quantify the volume of liquid that reaches the compression chamber after a liquid slugging event. A test bench was developed to measure the volume of oil that reaches the muffler outlet after the injection of a known volume, being comprised of three main components: calorimeter, liquid injection system and test section. The superheated gas cycle calorimeter was used to submit the muffler to specified values of pressure and temperature. The injection system consists of a reservoir of oil under controlled pressure, supply line and a solenoid valve that controls the injections into the test section. The test section is formed by a container with a sight glass where the transparent muffler made of acrylic is inserted. A high-speed camera is placed in front of the sight glass to allow observation of the flow of oil through the muffler. Measurements under different injection pressures showed that the phenomenon of liquid slugging is quite random and that the volume of liquid reaching the muffler outlet increases with the injection velocity.
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Pages: 10 p.
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Details
- Original title: Experimental investigation of liquid slugging in the suction mufflers of hermetic reciprocating compressors.
- Record ID : 30030296
- Languages: English
- Subject: Technology
- Source: 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
- Publication date: 2022/07/15
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