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[DOC File]APES Energy Problems - Quia
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The Kilowatt Hour, or kWh, is not a unit of power but of energy. Notice that kilowatt is a unit of power and hour is a unit of time. ... Convert total energy use to kWh. 4.32 x 10 6 J ( 1kWh/ 3.6 x 10 6 J) = 1.2 kWh. 4. An electric clothes dryer has a power rating of 4000 W. Assume a family does 5 loads of laundry each week for 4 weeks ...
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[DOC File]Even More Energy Problems - Bobula - ABOUT
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Estimate the energy consumption for refrigeration for both types of refrigerators in units of kWh/yr and convert your answer into kcal/yr (# kWh/yr x 860 kcal/kWh = kcal/yr). 2. For a total year’s use, you run the air conditioner for a total of 137 days, 24 hours per day, and use 7.25 kWh per hour.
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[DOC File]Energy Use Inventory
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Kilowatt-hours, Therms, BTUs, and Calories are a few of many different units for measuring energy, and it is possible to convert from one to the other. Convert the amount of energy supplied by natural gas for the month in Therms to kilowatt-hours. Show calculations: 1 Therm = 29.3 kWh. Amount of energy supplied by natural gas = _____kWh
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[DOC File]Chapter 3 Energy Efficiency
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Step 1: To find the efficiency, both the units of input energy and the output energy have to be same. So we need to convert kWh into Btus. 1 kWh = 3412 Btus Therefore 3.675 x10^12 kWh = 3.675 x 10^12 kWh x 3412 Btus 1 kWh = 12539.1 x 10^12 Btus
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[DOC File]Energy is one of the easiest areas of Environmental ...
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Convert units (either 960 kWh = 960,000 Wh or 350 Watts = 0.350 kW) Calculate the number of hours in a year (365 days x 24 hrs/day = 8760 hours) Calculate the watts (960,000Wh/8760 hrs = 110 Watts) The answer is less than the maximum of 350 Watts (~30% of total) Part I: Problem Solving. Show your work!!!
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[DOC File]New Jersey Clean Energy Collaborative
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The 1000 used in the denominator is used to convert watts to kilowatts. ... Additional energy savings of 175 kWh and peak demand saving of 60 Watts will be added to the output of the home energy rating software to account for the installation of high efficiency ventilation equipment. These values are based on a baseline fan of 80 Watts and an ...
kw to watts conversion

[DOC File]APES Energy Math - Weebly
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A home uses ten 100-watt lightbulbs for 5 hours per day. How many kilowatt hours of electricity are consumed in one year by using the lightbulbs? (Remember to convert watts to kilowatts) Mrs. Schertz’ electric bill for the month of February showed a total of 640 kWh. Her bill was $100. How much per kWh? (You may round to the nearest cent)
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[DOC File]Energy Starts With a “C”
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Next, convert kilowatt-hours (KWH) of electricity used and saved, to KWH of coal power used and saved. Recall that coal is our primary fuel source for electricity in Wisconsin. Take the percentage of Wisconsin electricity generated from coal (from question 1) and multiply each of the KWH numbers in the above table by that percentage, but in ...
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[DOC File]Electricity and Carbon Dioxide
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One thousand watts (w) is equal to one kilowatt (kw). Energy is often sold in units called kilowatt hours (kwh) which is the number of kilowatts a device requires multiplied by the number of hours the device is used. For example, if a 120 watt (0.120 kw) light bulb is used for 10 hours, the electric company will charge you for 1.2 kwh of ...
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Convert watts to kwh