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Friday 25 March 2011

ENERGY AUDIT

 Activity that serves the purposes of assessing energy use pattern of a factory or energy consuming, equipment and identifying energy saving opportunities.
 Energy Auditors to give recommendation.
 Function of energy Auditor :
(i) Quantify energy cost and quantity.
(ii) Correlate production to energy cost.
(iii) Energy database format.
(iv) Compliance of organization for policy aspect.
(v) Highlight areas needing attention.
(vi) Conduct preliminary and detailed energy audits.
(a) Data collection and analysis
(b) Measurements, mass and energy balances
(c) Reviewing energy procurement practices.
(d) Identification of energy efficiency projects and techno-economic evaluation.
(e) Establishing action plan including energy saving targets, staffing
(f) Recommendations on goal setting.
 Audit team to have representation from various sections.
 A standard of energy/p.u. to be derived then compared with actuals.
Methodology to Energy Auditing
a. Preliminary Energy Audit :
(1) It typically involves two or three days of plan visit.
(2) It is also referred to as walk-through audit.
(3) One may rely on data supplied by the unit or personally read from meters installed in the industry.
(4) In many instances, the meters installed in the industry do not show accurate reading.
(5) Ideally, the energy auditor must carry proper portable instruments and make recommendations.
b. Detailed Energy audit :
(1) It goes much beyond the quantitative estimates of cost and savings.
(2) The scope of the audit assignment is discussed in detail with the plant personnel.
(3) The study involves details examination of major energy consuming equipment.
(4) The study proposes specific projects/feasibility study for replacement proposals, providing a cost-benefit analysis of the recommended measures.

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