1 million people in Hong Kong using low-flush toilet and low-flow shower head. • 1 million leaky toilet and Faucet. Find 1. How much energy we can save? 2. How much coal (Kg) we can save? 3. How much CO2 we can reduce? 4. How many African children (1 liter/kid/day) we can support?
• 1 million people in Hong Kong using low-flush toilet and
low-flow shower head.
• 1 million leaky toilet and Faucet.
Find
1. How much energy we can save?
2. How much coal (Kg) we can save?
3. How much CO2 we can reduce?
4. How many African children (1 liter/kid/day) we can
support?
Energy needed to treat water
1. Average energy use for water treatment drawn from southern California
studies is 652 kWh per acre-foot (AF), where one AF = 325,853 gallons.
Thermal Energy in Coal
2. The thermal power plants consume about 0.45 kg of coal per kWh.
Energy output/fire power plant
3. A typical 500 megawatt coal power plant produces 3.5 billion kWh per year.
CO2 Emission
4. Taking coal to contain 50 percent carbon, which combines with oxygen during
burning to form CO2, we can arrive at 1.83 kg CO2 for every 1 kg of coal
burned.
Step by step
Solved in 5 steps
Calculation of Energy saving
We are given that Average energy use for waste water treatment = 652 KWh for 625,853 gallons
Average energy use for 1 gallon waste water treatment = 652625,853 KWh
Per day Average energy use for 29.522 Million gallon waste water treatment = 652625,853*29.522*106
Per day Average energy use for 29.522 Million gallon waste water treatment = 30753.29 KWh
" Per day Energy saving = 30753.29 KWh "
Finding
How to come up with 30753.29KWh?
If 652 KWh for 625,853 gallons
652,853*29.522*106 = ??
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