# Commission Implementing Decision (EU) 2017/1442 of 31 July 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for large combustion plants (notified under document C(2017) 5225) (Text with EEA relevance), Division BAT 31: In order to increase the energy efficiency of HFO and/or gas oil combustion in reciprocating engines, BAT is to use an appropriate combination of the techniques given in BAT 12 and below.

Extent: E+W+S+N.I.

Technique
Description
Applicability
a.
Combined cycle
See description in Section 8.2
Generally applicable to new units operated ≥ 1 500 h/yr.
Applicable to existing units within the constraints associated with the steam cycle design and the space availability.
Not applicable to existing units operated < 1 500 h/yr
Table 17
BAT-associated energy efficiency levels (BAT-AEELs) for the combustion of HFO and/or gas oil in reciprocating engines
These BAT-AEELs do not apply to units operated < 1 500 h/yr.
Net electrical efficiency BAT-AEELs apply to CHP units whose design is oriented towards power generation, and to units generating only power.
These levels may be difficult to achieve in the case of engines fitted with energy-intensive secondary abatement techniques.
This level may be difficult to achieve in the case of engines using a radiator as a cooling system in dry, hot geographical locations.
Type of combustion unit
BAT-AEELs
Net electrical efficiency (%)
New unit
Existing unit
HFO- and/or gas-oil-fired reciprocating engine — single cycle
41,5–44,5
38,3–44,5
HFO- and/or gas-oil-fired reciprocating engine — combined cycle
> 48
No BAT-AEEL

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Source: https://www.legislation.gov.uk/eudn/2017/1442/annex/division/3/division/3.2/division/3.2.1/division/1 (the official version)
Page: https://openlegislation.uk/eu-decision-2017-1442/annex/division-3/division-3.2/division-3.2.1/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.