Evaluation of Noise Level of Refrigeration Equipment
Abstract
The report covers an evaluation of the gasoline-engine-driven 3000 Btu/hr capacity, 5000 Btu/hr capacity refrigeration units to establish noise levels during operation for the conditions: as manufactured, after addition of a muffler, and after application of acoustical material. The objectives of the evaluation were to determine the noise level at the operator's position for each of the units as manufactured, after addition of a muffler, and after application of two types of acoustical material; to determine the distances in front of, to the left, and to the right of each unit to the 90-decibel noise level; to determine the back pressure in the exhaust manifold of each unit after assembly of the various mufflers; and determine the levels of the octave band for the 150-300, 300-600, 600-1200, 1200-2400, 2400-4800, and 4800-10,000 cycles per second bands at the operator's position for each of the refrigeration units in the various configurations are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1972
- Accession Number
- AD0755183
Entities
People
- Morris L. Budnick
Organizations
- United States Army Soldier Systems Center