Soil Profile. There are different types of soil, each with its own set of characteristics. Dig down deep into any soil, and youâll see that it is made of layers, or horizons (O, A, E, B, C, R). Put the horizons together, and they form a soil profile. Like a biography, each profile tells a story about the life of a soil. Most soils have three major horizons (A, B, C) and some have an organic horizon (O).
At a pilot facility in Singapore, Siemens has cut the energy needed to desalinate seawater by more than 50 percent. The plant processes 50 cubic meters of water per day, consuming only 1.5 kilowatt-hours of electricity per cubic meter.
The graph gives the energy needed to vaporise 1 kg of water with different water temperatures. So if the water temperature remains 100 deg C the energy needed to vaporise 1 kg of this water is 2257 kJ (see graph). If the water is evaporated at a temperature of 25 deg C, 2442.3 kJ of heat is needed to vaporise 1 kg. If you want to work out the energy in kJ required to evaporate 1 kg of water at temperature T deg C, here is an equation that will give you the answer accurate to within 1%. Energy=2501.3â2.4432x(T-0.01).