Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 8th Sem New 2181916 Energy Conservation And Management Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VIII(NEW) EXAMINATION ? SUMMER 2019
Subject Code:2181916 Date:09/05/2019
Subject Name:Energy Conservation And Management
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Calculate the pipe bores required for the suction and pressure lines
of a pump delivering 40 L/min using a maximum flow velocity in
the suction line of 1.2 m/s and a maximum flow velocity in the
pressure line of 3.5 m/s.
03
(b) Write brief note on ?future scenario of energy in India.? 04
(c) Define following terms: Energy Management, Energy conservation,
energy pricing, energy tariff, energy intensity, long term energy
scenario, Sectorial energy consumption
07
Q.2 (a) What are the features and notifications made under Energy
conservation Act 2001?
03
(b) What is the role of an ESCO? Discuss it in detail. 04
(c) Define the following terms: (i) SPP (ii) Present value of money (iii)
ROI (iv) NPV (v) IRR (vi) Sensitivity analysis (vii) Risk analysis.
07
OR
(c) Calculate indirect efficiency of boiler for the following data
Fuel firing rate = 5599.17 kg/hr Steam generation rate = 21937.5
kg/hr, steam pressure = 42 bars, Steam temperature = 377?C, Feed
water temperature = 96?C, percentage of CO2 in Flue gas = 14,
percentage of CO in flue gas = 0.55 Average flue gas temperature =
190 ?C, Ambient temperature = 31?C, humidity in ambient air =
0.0204 kg / kg dry air, surface temperature of boiler = 70?C ,wind
velocity around the boiler = 3.5 m/s ,total surface area of boiler = 90
m
2
, GCV of Bottom ash = 3349 kJ/kg, GCV of fly ash = 1894.6
kJ/kg, Ratio of bottom ash to fly ash = 90:10,
Fuel Analysis (in %) Ash content in fuel = 8.63, Moisture in coal
= 31.6, Carbon content = 41.65,Hydrogen content = 2.0413,
Nitrogen content = 1.6, Oxygen content = 14.48, GCV of Coal =
14,648 kJ/kg
07
Q.3 (a) List various energy audit instruments used during detailed energy
audit in thermal power plant.
03
(b) Explain selection of fluids for tube and the shell side in heat
exchanger from energy conservation point of view.
04
(c) Write brief note on tri-generation. 07
OR
Q.3 (a) Write brief note on National action plan on climate change. 03
(b) Explain Internal rate of return technique with example 04
(c) What are the benefits of monitoring & targeting system?
Differentiate between (1) Energy monitoring & targeting (2)
Internal & external benchmarking.
07
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VIII(NEW) EXAMINATION ? SUMMER 2019
Subject Code:2181916 Date:09/05/2019
Subject Name:Energy Conservation And Management
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Calculate the pipe bores required for the suction and pressure lines
of a pump delivering 40 L/min using a maximum flow velocity in
the suction line of 1.2 m/s and a maximum flow velocity in the
pressure line of 3.5 m/s.
03
(b) Write brief note on ?future scenario of energy in India.? 04
(c) Define following terms: Energy Management, Energy conservation,
energy pricing, energy tariff, energy intensity, long term energy
scenario, Sectorial energy consumption
07
Q.2 (a) What are the features and notifications made under Energy
conservation Act 2001?
03
(b) What is the role of an ESCO? Discuss it in detail. 04
(c) Define the following terms: (i) SPP (ii) Present value of money (iii)
ROI (iv) NPV (v) IRR (vi) Sensitivity analysis (vii) Risk analysis.
07
OR
(c) Calculate indirect efficiency of boiler for the following data
Fuel firing rate = 5599.17 kg/hr Steam generation rate = 21937.5
kg/hr, steam pressure = 42 bars, Steam temperature = 377?C, Feed
water temperature = 96?C, percentage of CO2 in Flue gas = 14,
percentage of CO in flue gas = 0.55 Average flue gas temperature =
190 ?C, Ambient temperature = 31?C, humidity in ambient air =
0.0204 kg / kg dry air, surface temperature of boiler = 70?C ,wind
velocity around the boiler = 3.5 m/s ,total surface area of boiler = 90
m
2
, GCV of Bottom ash = 3349 kJ/kg, GCV of fly ash = 1894.6
kJ/kg, Ratio of bottom ash to fly ash = 90:10,
Fuel Analysis (in %) Ash content in fuel = 8.63, Moisture in coal
= 31.6, Carbon content = 41.65,Hydrogen content = 2.0413,
Nitrogen content = 1.6, Oxygen content = 14.48, GCV of Coal =
14,648 kJ/kg
07
Q.3 (a) List various energy audit instruments used during detailed energy
audit in thermal power plant.
03
(b) Explain selection of fluids for tube and the shell side in heat
exchanger from energy conservation point of view.
04
(c) Write brief note on tri-generation. 07
OR
Q.3 (a) Write brief note on National action plan on climate change. 03
(b) Explain Internal rate of return technique with example 04
(c) What are the benefits of monitoring & targeting system?
Differentiate between (1) Energy monitoring & targeting (2)
Internal & external benchmarking.
07
2
Q.4 (a) List various sources of waste heat and potential of energy generation
out waste heat.
03
(b) Write brief note on networking and pinch analysis of heat
exchangers.
04
(c) Explain selection procedure of optimum steam traps for condensate
and flash steam recovery system in textile industry from energy
conservation point of view.
07
OR
Q.4 (a) Explain recent trends on selection of refractories from energy
conservation point of view.
03
(b) Explain how performance evaluation of furnace is done from energy
conservation point of view.
04
(c) Write brief note on Energy Management Information Systems. 07
Q.5 (a) Discuss the effect of following parameters on the performance of
Boiler
(1) Excess air
(2) Blow down
(3) Waste heat utilization
03
(b) List various energy conservation opportunities in a refrigeration
system.
04
(c) Explain the terms Kyoto Protocol, Conference of Parties (COP),
Clean Development Mechanism (CDM), and Prototype Carbon
Fund (PCF).
07
OR
Q.5 (a) Explain typical ice bank system and energy savings derived out of
it.
03
(b) Explain performance assessment of window and split room air
conditioners.
04
(c) Discuss the effect of climate change on environment in detail due to
effect of various energy uses.
07
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This post was last modified on 20 February 2020