Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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What is the mode if the water consumption of household in cubic meters for 8 months are 12, 24, 15, 12, 16, 24 and 14?
Check my answer, please.
To calculate the savings, we need to first determine reduction in waste- water generation for given 7 million population of Hongkong, only 1 million people in HK using low flush toilet and low shower head/ 1 million leaky toilet and faucet. Assume all use shower.
Conventional Water fixtures
End-Use
Conventional fixtures
Usage pattern
Population
Daily Usage
Toilets
3.5 gal/flush
4 flushes/per/day
6 million
3.5*4*6 = 84 million gallons
Showers
5 gal/min
5 min/shower
6 million
5*5*6 = 150 million gallons
Faucets
4 gal/min
2.5 min/per/day
6 million
4*2.5*6 = 60 million gallons
Leaks
10% of total use
-
-
0.1*(84+150+60) = 29.4 million gallons
Total
323.4 million gallons
Water efficient fixtures
End-Use
Water efficient fixtures
Usage pattern
Population
Daily Usage
Toilets
1.6 gal/flush
4 flushes/per/day
1 million
1.6*4*1 = 6.4 million gallons
Showers
2.5…
In the figure shown below, it is desired to pump 5259705 lit/day of water from a stream to a pool. El. A = 49m while El. B = 98 m. If the combined pump and motor efficiency is 90%, calculate the monthly power cost in pesos if electricity rate is P10 per kW-hr. Assume that the pump operates for 24 hours and take 1 month = 31 days;
Round your answer to 4 decimal places.
Pipe
Length (m)
Diameter (mm)
Hazen Coefficient
1
1997 m
375 mm
120
2
1514 m
240 mm
122
3
902 m
205 mm
149
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