SPPU Mechanical Engineering (Semester 7)
Energy Audit Management
May 2017
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


Solve any one question from Q.1(a,b) &Q.2(a,b)
1(a) Write a short note on:
i) Commercial & non-commercial energy.
ii) Renewable & non-renewable energy
6 M
1(b) Explain preliminary energy audit & its importance.
4 M

2(a) Explain detailed energy audit with its 10 steps.
6 M
2(b) Explain following instruments used in Energy Audit with their application:
i) Combustion analyzer
ii) Infrared pyrometer
4 M

Solve any one question from Q.3(a,b) &Q.4(a,b)
3(a) What is the NPV of an energy conservation project with cash flow given below:
Initial investment Rs. (1,000,000)
Saving in Year Cash Flow
1 Rs.200,000
2 Rs. 200,000
3 Rs. 300,000
4 Rs. 300,000
5 Rs. 350,000

The discount rate k = 10% Is the proposal attractive?
6 M
3(b) Write a short note on Return on Investment.
4 M

4(a) A economizer cost Rs. 200000 and will last for 10 years. It will generate a saving of Rs. 35,000 per year with a maintenance cost of Rs.5000 per year. The discount rate is 10% and salvage value is Rs. 5000 at the end of 10 years. Is the proposal attractive by NPV method?
8 M
4(b) What is the simple payback period?
2 M

Solve any one question from Q.5(a,b) & Q.6(a,b)
5(a) Explain merits and demerits of Direct and Indirect methods used for calculating boiler efficiency.
8 M
5(b) Write down varies energy conservation opportunities in HVAC System and DG set.
8 M

6(a) Explain various losses in industrial furnace system with a neat schematic sketch. Explain the indirect method of performance evaluation of a furnace.
8 M
6(b) What is the importance of Analysis and Recommendation for Energy Audit?
8 M

Solve any one question from Q.7(a,b) &Q.8(a,b)
7(a) Explain electrical billing tariff structure for an industrial consumer.
8 M
7(b) What is power factor? What are the benefits of improving power factor?
8 M

8(a) What is maximum demand in electrical systems? Explain how maximum demand is calculated with the help of a load curve.
8 M
8(b) What are the types s of lamps used in lighting system? Write down their features with typical applications.
8 M

Solve any one question from Q.9(a,b,c) Q.10(a,b,c)
9(a) Describe various factors influnecing selection of co-generation plant.
8 M
9(b) Write short note on:
i) CDM projects
ii) Carbon credits
6 M
9(c) How the Waste heat recovery systems are classified?
4 M

10(a) What is cogeneration? What are the advantages of cogeneration?
8 M
10(b) What are the direct and indirect benefits of Waste Heat Recovery plant?
6 M
10(c) Explain working of convective Recuperator with neat sketch.
4 M



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