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Energy
Auditing
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As per the
Energy Conservation Act, 2001, Energy Audit is defined as
“the verification, monitoring and analysis of use of energy
including submission of technical report containing
recommendations for improving energy efficiency with cost
benefit analysis and an action plan to reduce energy
consumption”. Implementation of recommended measures can
help consumes to achieve significant reduction in their
energy consumption levels. |
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Energy audit involves a systematic study undertaken on major
energy consuming sections and equipments including
construction of heat and mass balance with a view to
identify the flow of energy, utilization efficiency of
energy in each of the steps and pin-point wasteful energy
used. A well-conducted energy audit would reveal the areas
of wastage of energy and it would be possible to suggest
saving of energy. |
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The Energy Conservation Act requires the energy audit report
to contain recommendations for improving energy efficiency
with cost benefit analysis and an action plan to reduce
energy consumption [Clause 14(i)]. The conduct of energy
audit and implementation of its recommendations on
cost-benefit basis through accredited energy auditors is
expected to help the designated energy consumers to achieve
significant reduction in their energy consumption levels. |
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Role
of Energy Auditor:
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a)
Carry out a detailed energy audit.
b)
Quantify energy consumption and establish base line energy
information.
c)
Construct energy and material balance.
d)
Perform efficiency evaluation of energy & utility systems.
e)
Compare energy norms with existing energy consumption
levels.
f)
Identify and prioritization of energy saving measures.
g)
Analysis of technical and financial feasibility of energy
saving measures.
h)
Recommend energy efficient technologies and alternate energy
sources.
i)
Report writing, presentation and follow up for
implementation. |
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Preliminary energy audit is a relatively quick
exercise to:
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a) Establish energy consumption in the organization.
b) Estimate the scope for saving.
c) Identify the most likely (and the easiest areas for
attention).
d) Identify immediate (especially no-/low-cost) improvements/
savings.
e) Set a ‘reference point’.
f) Identify areas for more detailed study/measurement.
g) Preliminary energy audit uses existing, or easily obtained
data. |
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Whereas, detailed energy audit
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a) Whereas, detailed energy audit.
b) Offers the most accurate estimate of energy savings and cost.
c) Considers the interactive effects of all projects, accounts
for the energy use of all major equipment.
d) Includes detailed energy cost saving calculations and project
cost. |
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Steps involved in ‘detailed energy audit’.
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(EA) Pre-audit phase:
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a) Plan and organize.
b) Walk through audit.
c) Informal interview with plant personnel. |
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Audit phase:
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a) Primary data collection.
b) Conduct survey and monitoring.
c) Conduct detailed trials and experiments.
d) Analysis of energy use.
e) Identification and development of energy conservation
opportunities.
f) Cost benefit analysis.
g) Report preparation and presentation to the plant personnel
and management. |
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Post audit phase:
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| Implementation and follow-ups |
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