Energy Audit & Management (EX-703 (B)) - Important Questions

What is energy auditing? Explain the need for energy auditing in industrial sectors.

Describe the different types of energy audits and their significance for energy conservation.

Describe the role and responsibilities of energy managers in promoting energy efficiency in an organization.

Explain the environmental aspects associated with energy consumption / utilization, including renewable and non-renewable energy sources.

Explain the adverse effects / problems of harmonics on electrical equipment and system. Mention few equipments which contribute to harmonics and why it happens.

During April the plant recorded a maximum demand of 800 kVA at average power factor 0.80 lag. The minimum average power factor to be maintained is 0.90 lag. Calculate the kVAr rating of capacitor bank required, the new kVA demand after improvement and comment on PF penalty.

How is an energy efficient motor different from a standard motor in construction / features? What are the advantages of energy efficient motor and why is its efficiency higher?

What are the main components of electricity (EB) billing? How do demand and energy charges influence electricity cost?

Explain the working of boilers, furnaces and thermic fluid heaters. How is their efficiency computed?

Two identical biomass fired boilers of capacity 15 TPH with full load efficiency 82% are available. Part load efficiencies at 75% and 45% load are 78% and 66% respectively. For a given steam demand determine optimal loading of the boilers and estimate fuel savings.

Discuss the importance of condensate recovery and flash steam utilization in thermal systems with example.

Explain the factors affecting pump performance and energy conservation measures / opportunities in pumping systems, including proper selection and operation for efficiency.

Describe methods to improve energy efficiency in compressed air systems. Mention common losses and their remedies.

What is the (simple) payback period, how is it calculated, and why is it important in energy investment decisions? Discuss significance of risk analysis in evaluating it.

Write short notes on (any two): a) Life Cycle Costing - process and applications b) ESCO concept c) Net Present Value in energy projects d) Preliminary vs detailed energy audit.