MAN B&W L28/32H, Manual

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08028-0D\H5250\94.08.12
1613431-9.1
Page 1 (1)
D 10 25 0
L28/32H
Sound Measurements
91.08
* The engine sound measurement is according to Cimac's Recommendation of measurement for overall
noise of reciprocation engines, the test conditions is according to "Description of sound measurements"
D 10 25 0.
** The exhaust sound measurement is according to DS/ISO 2923, the test conditions is according to
"Description of sound measurements" D10 25 0.
The stated values are calculated and actual measurements on specified plant may be different.
Number of cylinders
RPM
Engine sound:*
Mean sound pressure
dB (A)
approx. anechoic chamber
Exhaust sound:**
Level
dB (A)
5 6 7 8
720
100.0
112.8
750
99.4
115.3
720
99.1
114.0
750
100.6
115.1
720
99.1
113.0
750
100.0
113.5
720
99.3
120.0
750
100.0
120.0
720
101.0
123.0
750
101.0
123.0
9
Engine and Exhaust Sound