STUPIDSID
Write notes on any Four of the following
1(a)
Present status of power generation of India
5 M
1(b)
Horizontal axis wind turbine
5 M
1(c)
Energy audit
5 M
1(d)
Energy plantation
5 M
1(e)
Solar photo-voltaic system
5 M
2(a)
Calculate solar altitude angle, incident angle and collector efficiency if:
Location Pune: (18°32'N, 73°51'E)
Day and Time: May 15, 11 am
Annual intensity of solar radiation: 400 W/m2
Collector tilt=latitude angle
No. of glass covers=2
Heat removal factor=0.85
Transmittance of glass=0.88
Absorption of glass=0.90
Top loss coefficient=7 W/m2
Collector fluid temperature=73°C
Ambient temperature=28°C
Diffusive reflectance for two covers:0.24
Location Pune: (18°32'N, 73°51'E)
Day and Time: May 15, 11 am
Annual intensity of solar radiation: 400 W/m2
Collector tilt=latitude angle
No. of glass covers=2
Heat removal factor=0.85
Transmittance of glass=0.88
Absorption of glass=0.90
Top loss coefficient=7 W/m2
Collector fluid temperature=73°C
Ambient temperature=28°C
Diffusive reflectance for two covers:0.24
10 M
2(b)
Show that maximum power coefficient is 59% for horizontal axis wind turbine.
10 M
3(a)
Discuss the factors which affect the production of bio-gas.
10 M
3(b)
Estimate the average daily global radiation on a horizontal surface in Baroda (22°N) if average sunshine hours are 9.5, a=0.35, b=0.4 and March, 16 is typical day for that month.
10 M
4(a)
What is wave energy? Explain any one wave energy conservation system.
6 M
4(b)
Describe pyranometer and sunshine recorder.
6 M
4(c)
Calculate the number of animals and volume of biodigester required to produce power for a household which has power requirement of 0.8 KW for lighting and cooking purpose.
take C.V. of methane 28 MJ/m3
Burner efficiency 70%,
Retention period 30 days,
Dry matter per animal per day is 1.8 kg,
Density of dry matter in slurry in dig-ester is 50kg/m3,
Bio-gas yield is 0.3m3 per kg of dry input.
Methane proportion in bio-gas is 0.6.
take C.V. of methane 28 MJ/m3
Burner efficiency 70%,
Retention period 30 days,
Dry matter per animal per day is 1.8 kg,
Density of dry matter in slurry in dig-ester is 50kg/m3,
Bio-gas yield is 0.3m3 per kg of dry input.
Methane proportion in bio-gas is 0.6.
8 M
5(a)
Explain with a schematic the working of flash steam geothermal plant. What are its limitations.
6 M
5(b)
Derive an expression for tidal power for single basin area.
6 M
5(c)
Explain with schematic the working of KVIC plant in detail.
8 M
Write short notes on any Four
6(a)
Need for alternate energy sources
5 M
6(b)
Comparison between liquid and air flat plate collectors
5 M
6(c)
Total energy conversion
5 M
6(d)
Local solar time
5 M
6(e)
Open cycle OTEC system
5 M
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