Energy Audit Conservation and Management

Code No: R41025

R10

Set No. 1

IV B.Tech I Semester Regular Examinations, December - 2013

ENERGY AUDIT CONSERVATION AND MANAGEMENT (Open Elective) Time : 3 hours

Max. Marks: 75

Answer any Five Questions All Questions carry equal marks ***** 1. a) What are the different types of Energy Audit? Explain Energy Index and Cost Index. b) Discuss about the significance of pie charts in Energy Management.

2. a) Discuss the principles and the objectives of energy managements. b) What are the qualities of energy manager? Also describe functions of energy manager in brief. 3. a) Discuss about Polar Curve. b) A lamp taking 0.5A and 250V rated at 125 mean horizontal candle power. Find its efficiency in i) Mean horizontal candle power per watt. ii) Lumens per watt if spherical reduction factor is 0.8. 4. a) Discuss various methods of power factor improvement. b) Discuss the effect on power factor with non-linear loads. 5. Discuss the usage of pyrometers, Lux meters and tong testers in energy management scenario. 6. Discuss the methods of conservation of electric energy in domestic buildings. 7. a) Explain the merits and demerits of energy efficient motors. b) What is the time value of money? Briefly describe its importance. 8. a) Explain computation of simple pay back methods with suitable example. b) Explain the need of power factor correction with suitable example.

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Code No: R41025

R10

Set No. 2



Max. Marks: 75

Answer any Five Questions All Questions carry equal marks ***** 1. a) What is Energy Audit and explain its necessity in present scenario? b) Explain various energy conservation schemes in detail.

2. a) Discuss the role and place of energy manager? b) What is the check list for top management? Briefly describe about it. 3. a) Discuss about types of lighting, and various luminaries. b) A lamp taking 3.5A at 100V emits 6000 lumens. Calculate its efficiency in i) Lumens per watt ii) Mean spherical candle power per Watt 4. a) Discuss the location of capacitors for power factor improvement? How power factor is improved with shunt capacitor? b) Discuss the effect of Harmonics on power factor. 5. Discuss the role of energy instruments i) Watt-hour meter ii) Data logger and

iii) Thermocouples

6. a) Discuss the space heating methods i) Radiators ii) Panel heaters iii) Convection heater b) Explain the methods used for energy saving in domestic buildings. 7. a) Explain life cycle of an electric motor and describe its cycle costing. b) Explain the methods of cost benefit risk analysis for energy projects. 8. Explain the net present worth method used for analysis of economics in energy management.

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Code No: R41025

R10

Set No. 3



Max. Marks: 75

Answer any Five Questions All Questions carry equal marks ***** 1. a) Discuss the Role of Sankey diagrams in Energy Management with a suitable example. b) Explain in detail the difference between energy conservation and energy efficiency and its relevance.

2. Explain the role of energy manager in energy management and discuss clearly his functions and duties? 3. a) Discuss the necessity and need for modification and replacement of existing lighting systems. b) What is Polar curve? How is it obtained. 4. a) Explain the effect of Harmonics on Power Factor. b) What is the necessity of P.F improvement? Explain with an example. 5. Discuss the working of power analyzer and its role in energy management. 6. a) Discuss about various electric water heating system generally used. b) Discuss various energy conservation methods used in domestic buildings. 7. Write a short notes on

a) Energy efficient electric motors b) Life cycle costing analysis

8. Discuss the methods of return on investment analysis for energy p rojects with suitable

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Code No: R41025

R10

Set No. 4



Max. Marks: 75

Answer any Five Questions All Questions carry equal marks ***** 1. a) Explain the types of Audit generally followed and give a checklist for energy audit in general. b) Discuss about following: i) Energy Saving Potential ii) Load Profiles

2. a) Explain the principles of Energy management. b) How energy management program is organized? Discuss in brief. 3. a) Discuss about types of lamps and types of lighting. b) What are the energy conservation measures pertaining to lighting systems? 4. a) Discuss the working of power factor controller for single phase-motors. b) Discuss the advantages of power factor improvement. 5. Classify the energy instruments in the context of energy man agement and explain how they are used. 6. a) What are the methods of heat transfer from hot body to a cold body. b) A room measures 3.7x3.7x4.3 m. the air in it is to be renewed every 30 mins at a 0 temperature 10 C above that of the incoming air. i) find the necessary rating of an electric heater ignoring losses from walls (air 3 3, 0 density =1.22x10 g/m specific heat =1.0J/g C) 0 ii) find the rating of the electric heater if he at loss from the walls, etc = 753 J/ C. 7. Disucss the depreciation methods followed for economic an alysis with examples. 8. Write a short notes on a) Simple pay back method

b) Return on investment

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c) Power factor correction

Energy Audit Conservation and Management

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