Refrigeration Compressor Unit Noise Source Separation | Piston and Semi-Hermetic Cold Storage Compressor Test Method
Noise source testing can separate 92% of compressor noise components for targeted treatment, xiteliduo Refrigeration Compressors introduces acoustic measurement parameters for cold storage engineering. Piston refrigeration compressor main noise source comes from valve impact and crankshaft movement. These two sources contribute 74% of total radiated sound energy. Semi-hermetic refrigeration compressor dominant noise comes from gas flow inside sealed housing. Its noise spectrum is more continuous without obvious low-frequency peaks. Cold storage refrigeration compressor noise measurement should be performed at 1m distance and 1.2m height above ground. Background noise must be at least 10 dB(A) lower than unit noise. Vibration transfer noise can be reduced by 21 dB(A) if isolator natural frequency is less than one-third of compressor excitation frequency. 10 recommended hot search keywords: cold storage refrigeration compressor, piston refrigeration compressor, semi-hermetic refrigeration compressor, refrigeration compressor noise source, refrigeration compressor acoustic test, refrigeration compressor vibration noise, refrigeration compressor sound spectrum, refrigeration compressor manufacturer, cold storage noise control engineering, refrigeration compressor supplier
FAQ
Q1: What percentage of compressor noise components can be separated via noise source testing? A: Noise source separation can identify 92% of individual noise components. Q2: What creates 74% of total sound energy of piston refrigeration compressor? A: Valve impact and crankshaft movement produce most of piston compressor noise. Q3: What is the main noise source of semi-hermetic refrigeration compressor? A: Internal gas flow inside sealed housing forms its primary noise source. Q4: What is the standard measurement position for compressor noise test? A: Measure at 1 meter distance and 1.2 meters height above ground surface. Q5: What background noise requirement must be met during noise measurement? A: Background noise should be at least 10 dB(A) lower than compressor noise level. Q6: How much vibration-borne noise reduction can qualified isolators achieve? A: Proper isolator can cut vibration transfer noise by 21 dB(A). Q7: What difference exists between noise spectrum of piston and semi-hermetic compressor? A: Piston model has prominent low-frequency peaks; semi-hermetic spectrum is smoother
