Building automation – impact on energy efficiency - Siemens ...

E 4.6
3.4.6 Operational control
The organization shall identify and plan those operations
that are associated with the significant energy aspects
and ensure consistency with its energy policy, energy
objectives and energy targets. This includes:
a) preventing situations that could lead to deviation from
the energy policy, energy objectives and energy targets,
b) setting criteria for operation and maintenance of installations,
equipment buildings and facilities,
c) energy considerations in the acquisition and purchase
of equipment, raw materials and services; when
purchasing energy consuming equipment having a significant
<strong>impact</strong> on the total energy consumption, the organization
should inform suppliers that purchasing is
partly evaluated on the basis of energy efficiency,
d) evaluation of energy consumption when considering
the design, change or restoration of all assets which
have the potential to significantly affect energy consumption,
including buildings,
e) appropriate communication in this regard to personnel,
and people acting on behalf of the organization and
other relevant parties.
The organization considers supporting BACS options
to achieve and maintain operational control
requirements of the EMS.
As a consequence, the organization specifies energy
objectives and targets for buildings:
Maintenance criteria (e.g. intervals, operating hours
etc.) under the BACS maintenance.
<strong>Building</strong> plants, installations, equipment, etc., are
continuously adapted and optimized to meet current
operational and organizational profiles, needs and
demands.
A commitment to implement and purchase (new
procurement or replacement) only energy efficient
BACS equipment and certified products, to the extent
available.
BACS procedures to record and analyze changes in
energy consumption (before/after), modernization,
etc. of buildings and/or building installation, plans,
equipment etc.
E 5
E 5.1
3.5 Checking
3.5.1 Monitoring and measurement
The organization shall establish and describe the energy
management program.
An energy metering plan shall be defined and implemented.
At defined intervals, the organization shall
monitor, measure and record significant energy consumption
and associated energy factors.
The organization shall ensure that the accuracy and repeatability
of monitoring and measuring equipment used
is appropriate to the task. Associated records shall be
maintained.
The organization shall, in each practicable instance, establish
the relationships between energy consumption
and its associated energy factors and shall, at defined
intervals, assess actual versus expected energy consumption.
The organization shall maintain records of all
significant accidental deviations from expected energy
consumption, including causes and remedies. Relationships
between energy consumption and energy factors
shall be reviewed at defined intervals and revised if
necessary.
The organization shall wherever possible compare their
energy performance indicators against similar organizations
or situations, externally and internally.
BACS communications with regard to building operation,
maintenance, etc.
The organization considers suitable, multiplex
BACS options to achieve and maintain the measurement
and monitoring requirements of the EMS
within buildings and specifies:
An appropriate energy metering plan for buildings
based on BACS to include an energy data repository
for storing all types of energy data. It should include
data entered at equal intervals (e.g. measured
values for every 15, 30, or 60 minutes, etc.)
and meter readings and also energy-related factors
(operating times, occupancy, etc.).
BACS measuring principles including calibration to
ensure accuracy, high availability and reproducibility
of the energy data and records.
BACS activities (more or less online and automated)
for measurement and monitoring, e.g.:
Ongoing logging and monitoring of the significant
energy use and affected energy factors.
Summary of significant energy consumption in form
of key figures.
Compare actual and expected energy consumption,
etc.
Intervene when deviations from expected energy
97