Microphone! Energy: What it is, how we use it, how we waste it
Gaysue, Marcia, Online Producer has reference to this Academic Journal, PHwiki organized this Journal Microphone! Energy: What it is, how we use it, how we waste it Which would you prefer to do Stick your h in addition to in boiling water or steam
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What is Energy Energy is the amount of work a physical system is capable of per as long as ming so energy can be defined as that which changes the position, physical composition or temperature of an object Energy comes in many flavors We tend to trans as long as m energy in order to make it usable We burn fossil fuels to generate usable heat energy to make steam to turn electrical turbines We split atomic nuclei to do the same thing We burn gasoline to create energetic gases that push pistons in internal combustion engines We trans as long as m liquids in addition to gases moving at high velocities into rotational kinetic energy that turns shafts as long as various purposes
Energy is measured in many different units Kilowatt-hours Barrels Gallons Therms BTUs Calories Kilocalories (equals one food calorie Energy densities vary a great deal 90 lbs of butuminous coal in addition to lignite production 125 lbs of oven-dried wood 8 gallons of gasoline (enough to move an average passenger car ~150-200 miles) 10 therms of dry natural gas 11 gallons of propane 2 months of dietary intake of a laborer 20 cases (240 cases) of table wine 1 milllion BTU equals approximately:
You are a lightbulb (not a walrus), in addition to as much as 10 C batteries Power is a measure of the rate of energy production in addition to consumption A typical 100 watt light bulb consumes 100 watts of energy per hour (0.1 kWh) A st in addition to ard 1 GWe (gigawatt) nuclear power plant generates a billion watts of electrical energy per hour (1 million kilowatt-hrs) A 150 horsepower car that gets 30 mpg, driven at 60 mph, consumes 2 gal/hr of gasoline; 2 gallons of gasoline contain about 73 kWh or 98 hp-hr of energy.
To use energy more efficiently, it helps to match power rates to requirements Because an automobile has highly variable power requirementsfrom 1 mph to bursts of 80 mph, it requires a high peak power capacitywhich is difficult to provide with electricity in addition to which tends to lower the efficiency of energy use By contrast, a vehicle that only needs a maximum speed of 30 mph also requires much variability in velocity in addition to acceleration rates, in addition to less peak power capacity (that is why hybrids rely much more on electric power system as long as local travel) Meanwhile, we value energy as long as the services it can provide, not as long as its specific as long as m We burn fuel at 1,000+ degrees to boil water at 212° to make a hot drink at 120° which we radiate as body heat at 98.6° Basic principle of energy use: we take high quality energy sources, use them to do work as long as us, in addition to degrade them into lower-quality heat
Someday, all energy sources in the universe will probably dissipate as very low quality heat House as an energy eco-system: energy goes in, does work, becomes heat, in addition to escapes at <70° There are various ways to increase the efficiency of energy use on both supply in addition to dem in addition to sides: in the generation process; in matching source to need (e.g., solar as long as heating water & space); in more efficient combustion & distribution systems; in dem in addition to reduction through more efficient appliances, insulation, leak reduction, etc. Houses are only one type of energy ecosystem Set your thermostat lower Dont heat the whole house Wash cloths with the Cold/Cold setting in addition to use full loads Unplug computers, TVs, Cable boxes, in addition to other energy vampire appliances when not in use Turn off the lights when you leave the room Take shorter showers Trim those bushes on the south side of your home in addition to open the shades Adjust water heaters down to 126 degrees Clean heater in addition to refrigerator filters & vents to maximize per as long as mance Cook more efficiently Saving energy in the household What is your consumption profile
Gaysue, Marcia Online Producer
Gaysue, Marcia is from United States and they belong to Arizona Republic and they are from Phoenix, United States got related to this Particular Journal. and Gaysue, Marcia deal with the subjects like City/Metropolitan News; Local News; Regional News
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