esm223_08_Lund

esm223_08_Lund - Energy and Water Interactions: Insights...

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1 Energy and Water Interactions: Insights from Mathematical Models Jay R. Lund Kaveh Madani University of California, Davis http://cee.engr.ucdavis.edu/faculty/lund/
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2 Outline 1. Informational - Energy in water production - Water in energy production 2. Philosophical - Trade-offs and interactions 3. Practical - Modeling and working with complexity 4. Conclusions
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3 Energy in Water Production/Use 1. Pumping – energy use 2. Maintenance, chemicals - Pumping and treatment in California are about 6.5% of total energy use 1. Heating – hot water 2. Construction and capital investments
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4 Water in Energy Production/Use 1. Cooling – power plants 2. Cooling – plants, shade, evaporative 3. Water heating 4. Hydropower 5. Pumped storage 6. Peak versus base energy loads
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5 Water in Energy Production/Use Thermoelectric cooling withdrawals: 52% of national use, <2% in California USGS 2000
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6 What is “use”? Withdrawal or applied use – amount taken from a stream or aquifer Consumptive use – amount of water made unavailable for later use (evaporation, discharge to saline sink) Why care? Fish entrainment, downstream use concerns, water temperature
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7 Common Energy-Water Tradeoffs Energy Use Water Use or Environmental Impact More More Less Less 0 0 Biofuels Production? Seawater desalting
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This note was uploaded on 08/06/2008 for the course ESM 235 taught by Professor Dunne during the Winter '08 term at UCSB.

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esm223_08_Lund - Energy and Water Interactions: Insights...

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