Geology Reference
In-Depth Information
The use of groundwater for heat pumps can produce 3 kWh of thermal
energy for every 1 kWh of electricity used. This heating method is becoming
more widespread, and should therefore prompt more research on shallow
aquifers, important sources of calories.
3.4 Industry
The production of raw material and equipment requires water (Table 18).
Industry derives approximately 25% of its consumption from groundwater.
As in agriculture, the current trend is towards the search for procedures
enabling a more effi cient use of water.
Table 18
Water Used in Industry per Ton of Resulting Product (Newson, 1994).
Product
Water used in m
3
aluminum
120
automobiles
200
paper
1,000
steel
2,500
tires
2,600
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