BEAM Plus Existing Buildings

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BEAM PLUS FOR EXISTING BUILDINGS ENERGY USE (E U)
V ERSION 1.2
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 64
4 ENERGY USE 4.P PREREQUISITE
4.1
4.2
4.3
4.4
INTRODUCTION An objective of BEAM is to encourage thorough evaluation of the
performance of building and services system designs, and greater
investments into measures that will help improve the energy
performance of existing buildings, so as to reduce energy consumption
and the associated environmental impacts, and to reduce summer peak
electricity demand.
The assessment of the building and engineering systems is performance
based as far as possible, but credits are also given for features which
have proven to contribute to energy efficiency and conservation. Credits
are given where management, operation and maintenance practices are
such as to seek continued improvements in energy performance.
CLASSIFICATION OF
BUILDINGS
To deal with the wide range of buildings that may be encountered,
buildings/premises are categorised according to the provisions for air-
conditioning and ventilation. This is necessary as the operational needs
of buildings together with the different air-conditioning and ventilation
systems that serve their needs result in large variations in energy use
between buildings.
AIR-CONDITIONED
BUILDINGS
This refers to buildings and premises that are air-conditioned, either by a
central plant serving the entire building or unitary equipment for
individual spaces, and where the air-conditioning system operates
almost throughout the year. When a significant portion of such buildings
are mechanically or naturally ventilated additional assessments shall be
included.
NATURALLY
VENTILATED/AIR-
CONDITIONED BUILDINGS
This refers to buildings that are designed to use natural ventilation, but
may be air-conditioned when natural ventilation fails to provide adequate
indoor comfort conditions. When a significant portion of such buildings
are mechanically ventilated additional assessments shall be included.
MECHANICALLY
VENTILATED BUILDINGS
This refers to buildings such as car parks, factories, godowns, etc.,
where the major areas rely solely on mechanical ventilation for indoor
thermal environment and/or control of air quality. When a significant
portion of such buildings are air-conditioned or naturally ventilated
additional assessments shall be included.
OTHER BUILDINGS This embraces buildings/premises that cannot be categorised as one of
the above and comprise an unusual mix of premises or premises with
special uses. Such buildings would be assessed based on either the
generic framework for assessment of energy performance, with the
required parameters and benchmarks determined as the first stage of the
assessment, and/or feature specific assessments.
ENERGY USE
CATEGORIES OF BUILDINGS /PREMISES
NATURALLY V ENTILATED/
AIR-CONDITIONED
AIR-CONDITIONED
(CENTRAL OR UNITARY)
MECHANICALLY
VENTILATED
OTHER TYPES
(SPECIAL CASES)