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Energy conservation is something we all hear about on a regular basis Why should we as consumers bother to worry about energy conservation The answer is quite simple We are using fossil fuels to provide our energy that we mostly take for granted This is a resource that will eventually run out The human race is growing at a rapid rate and the impact on the global energy requirements is massive For every Kilowatt-hour saved 12kg less greenhouse gasses are produced Environmental Services Branch 1993 Another good reason to cut back on our use is the financial incentive Savings made from smart use can be quite substantial In this essay we are going to look at home energy use in particular home lighting After the hot water system home lighting can account for as much as 55 of your energy bill In order to understand your electricity we need to understand how it is measured The energy consumption of an appliance can be obtained from its nameplate or in the case of lighting on the globe or tube itself It identifies the energy rating in watts W or kilowatts kW What is a watt Encyclopaedia Britannica describes a watt as unit of power in the International System of Units SI equal to one joule of work performed per second or to 1746 horsepower An equivalent is the power dissipated in an electrical conductor carrying one ampere current between points at one-volt potential difference It is named in honour of James Watt British engineer and inventor One thousand watts equal one kilowatt Most electrical devices are rated in watts Encyclopaedia Britannica 2003 What is a kilowatt hour kWh or as it is referred on your electricity account a unit of electricity Basically it is the amount of electricity used when an appliance is turned on for some time It also depends on the electrical rating of the appliance and the length of time
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