GEOG 3EE3 Lecture Notes - Lecture 3: British Thermal Unit, Watt, Kilowatt Hour
6 Mar 2017
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Naturally occurring energy sources or energy carriers e. g. fossil fuels, biomass, solar, etc. Allows comparison between different sources how much energy is being consumed, and produced, etc. Specific energy: energy per tonne of fuel if you have countries that rely on fossil fuels while others do not -> can convert energy to specific units. Tw = 1 terawatt = 1 million million watts kwh = kilowatt-hour = unit of energy (what we will be using) One kwh: the amount of energy converted in one hour at rate of one kilowatt. 40 min for 3kw heater = 2kw used. Units based on oil: one tonne of oil equivalent (toe) Energy released from the combustion of 1000 kj of oil = 41. 9 gj. Coal: tonne of coal equivalent (tce: problem with this measure. Problem: which form of coal: high quality coal = more energy, low quality = less energy, no standard at this point. Ntu: british thermal unit = 1,055. 06 jolts.
