Report - DCE - Nationalt Center for Miljø og Energi

ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Ã ÃÃÃ ÃÃÃ ÃÃÃÃÃ ÃÃÃÃ
ÃÃÇÃ ÃÃÇÃÃ ÃÃÃÃÃ ÃÃÃÃ
ÃÃÃÃÃÃÃÃÃÃ
ÃÃ ÃÃ ÃÃÃÃ ÃÃÃÃÃ
Ã
ÃÃÃ
ÃÃ
ÃÃÃÃπ ÃÃÃÃπÃ
ÃÃÃÃÃÃÃ
ÃÃÃÃ
à ÃÃÃÃπ ÃÃÃÃ
Ã
π ÃÃÃ
à ÃÃÃÃπà ÃÃÃà ÃÃÃÃÃ
ÉπÃÃÉà ÃÃ
ÃÃÃÃÃÃÃÃÃÃÃ
Éπ ÃÃÃÃ
Ã
à à ÃÃπà ÃÃÃÉπÃ
ÃÃà à à ÃÃÃπà ÃÃÃà ÃÃÃÃÃ
Ãπà ÉπÃÃÉÃà ÃÃ
Éπà ÃÃÃÃ
ÃÃÃÃ
à ÃÃπà ÃÃπ
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ
ÃÃÃÃÃÃÃÃÃÃÉÃÃÃÃÉÃÃ
ÃÃÉÃÃÃ
Ã
ÃÃÃÃÃÃÃÃÃÃÃà ÃÃÃÃÃÃÃÉÃÆà πÃÃÃÃÃÃÃÃÃÃÉÃÆà Ã
The equivalent limits for HC and CO are Dp/Foo = 19.6 for HC and Dp/Foo =
118 for CO (ICAO Annex 16 Vol. II paragraph 2.2.2). Smoke is limited to a
regulatory smoke number = 83 (Foo) -0.274 or a value of 50, whichever is the
lower.
A further description of the technical definitions in relation to engine certification
as well as actual engine exhaust emission measurement data can be
found in the ICAO Engine Exhaust Emission Database. The latter database is
accessible from http://www.caa.co.uk, hosted by the UK Civil Aviation Authority.
For seagoing vessels, NOx emissions are regulated as explained in Marpol
73/78 Annex VI, formulated by IMO (International Maritime Organisation).
The legislation is relevant for diesel engines with a power output higher
than 130 kW, which are installed on a ship constructed on or after 1 January
2000 and diesel engines with a power output higher than 130 kW which undergo
major conversion on or after 1 January 2000.
The NOx emission limits for ship engines in relation to their rated engine
speed (n) given in RPM (Revolutions Pr Minute) are the following:
• 17 g pr kWh, n < 130 RPM
• 45 x n-0.2 g pr kWh, 130 ” Q 530
• 9.8 g pr kWh, n • 530