ENVR 1301 Lab 1

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Tarrant County College, Fort Worth *

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Electrical Engineering

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Jan 9, 2024

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Class: ENVR-1301 LAB 1/2 - Personal Energy Consumption 1

SOLAR-WIND Levelized Cost of Energy (LCOE) values* • All answers in complete sentences. Show all working. Introduction Questions: (20pts) 1. Describe how the majority of the energy in the United States is produced for electricity. The main source for producing electricity in the united states is produced from fossil fuel such as the main one being coal. In 2001 coal was responsible for producing 51.7% of electricity. 2. Why is the world facing an energy crisis in the 21 st century? The world today faces an energy crisis due to the increase in high energy consumption with the non-renewable resources having a limited number. As we know fossil fuels take many years to be produced. 3. Why is nuclear power considered to be a controversial solution to our energy crisis? Nuclear power is controversial when it comes the toxic waste it produces as it is a very toxic pollutant towards earth’s environment. 4. What are some renewable ways to produce energy and why are they considered to be more environmentally friendly? Some renewable ways to produce energy include hydropower which uses water as power to create energy ,solar energy which uses sun heat to produce energy and wind energy which is the most efficient .These are considered more eco-friendly because they use earth and sun as energy without polluting the earth. Purpose: Record and calculate approximate personal energy use in the home today and compare/contrast the amounts, by-products, and monetary costs of competing fuels. Introduction: Electrical consumption has gone up in the United States over the last 50 years for a number of reasons, including increased per capita demand and commercial and industrial demand from economic expansion. While the number of Americans grew by 87% from 1950 through 2000, their energy consumption expanded by a much greater 194%. At the same time, some traditional sources of fuel for electrical generation have stagnated or even fallen. In the energy mix today, coal is the dominant fossil fuel for the production of electricity – and growing. In 2001, 51.7% of our electricity was from coal. Petroleum now supplies very little electricity in the US. Natural gas supplies about 16% of our electricity. Natural gas supply and demand were in relative balance in the US until the mid-1980’s, when a production consumption gap developed. As a result, in 2001 domestic production of natural gas was 19.7 trillion cubic feet, consumption as 22.2 trillion cubic feet, and imports were 3.98 trillion cubic feet. Nuclear electric power did not exist in this country until 1957. The new industry expanded rapidly until the 1979 accident at Three Mile Island in Pennsylvania and the Chernobyl catastrophe in Ukraine in 1986. As fewer new units came on line and old units began to shut down, the number of operable units fell to 104 in 2001. Today about 21% of our electricity is from nuclear power, a portion currently in a downtrend. Our personal use of electricity is very small when compared to the total used in the US today, and personal consumption of fuels is equally small. But as you have seen in other investigations, when the small amounts used by individuals are added up, they become a very significant value for a large population. Personal decisions about how much energy to use or save and which sources to depend on are very significant. Procedure: 2

1. On the Home Electrical Use Survey, record the amount of time you use each appliance each day. You must include ALL of your personal energy use (ie. that required to wash YOUR clothes or dishes or to cook YOUR food). If an appliance is used a few times a week or less, prorate it to a daily use . 2. Convert watts to kilowatts (1 kW = 1000 W) 3. Determine energy use in kilowatt-hours/day Central AC for me my family uses it as well used them i Home Electrical Use Survey (20pts) Appliance Power (W) Power (kW) # hours/day Energy/day (kWh/day) Central AC 1100 1.1 kW 18hr / per day 19.8kWh/per day Room AC 1360 1.36 kW 12hr / per day 16.32kWh/per day Space heater 1500 0 0 0 Water heater 4500 4.5 kW .75hr / per day 3.375kWh/per day Clothes washer 640 .64 kW 1hr / per day .64kWh / per day Clothes dryer 4800 4.8 kW 1hr / per day 4.8kWh / per day Dishwasher 2000 2 kW .5hr / per day 1kWh / per day Refrigerator 1270 1.27 kW .1hr /per day .127kWh / per day Blender 385 0 0 0 Coffeemaker 1100 0 0 0 Oven 3500 3.5 kW .5hr / per days 1.75kWh / per days Stove 1800 1.8 kW .75hr / per day 5.25kWh / per days Microwave oven 1500 1.5 kW .1hr / per day .15kWh / per days Toaster 1100 0 0 0 Toaster oven 1150 0 0 0 Computer 40 .04 kW 2hr / per day .08kWh / per day Printer/Scanner 25 0 0 0 Radio / Clock radio 10 0 0 0 Cell phone charger 10 .01 kW 8hr / per day .08kWh /per day Cordless phone 10 0 0 0 Television 125 .125 kW .5hrs / day .0625kWh / per day Stereo / CD player 50 0 0 0 VCR/DVD/Gaming system 25 .025 kW 2hr / per day .05kWh /per day Hair dryer/styling product 1200 0 0 0 3

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