DIESEL-POWERED HEAVY-DUTY REFRIGERATION UNIT NOISE

A series of noise measurements were performed on a diesel-powered heavy-duty refrigeration unit. Noise survey information collected included: polar plots of the 'A Weighted' noise levels of the unit under maximum and minimum load conditions; a linear and 'A' weighted acoustical time history of the refrigeration unit noise operating from start-up to load conditions representing both minimum (unloaded) and maximum (loaded) cooling capacity; the determination of the unmuffled refrigeration unit engine exhaust noise level under maximum and minimum load conditions; the determination of the noise contribution, under maximum load conditions, from the refrigeration unit engine exhaust and engine cooling system fan to the overall system noise.

• Corporate Authors:

  Donaldson Company, Incorporated

  1400 West 94th Street
  Minneapolis, MN  United States  55431

  Transportation Systems Center

  55 Broadway, Kendall Square
  Cambridge, MA  United States  02142
• Authors:
  • Retka, T J
• Publication Date: 1976-1

Media Info

• Pagination: 50 p.

Subject/Index Terms

• TRT Terms: Acoustic measuring instruments; Acoustics; Diesel engines; Engines; Machines; Mufflers; Noise; Noise control; Refrigerated structures; Refrigerator trucks; Sound level
• Uncontrolled Terms: Noise reduction
• Old TRIS Terms: Acoustic measurement; Engine noise
• Subject Areas: Environment; Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00133166
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Foma Rpt., DOT-TSC-OST-75-53
• Contract Numbers: DOT-TSC-532
• Files: NTIS, TRIS
• Created Date: Jun 23 1976 12:00AM