CLICK HERE TO DOWNLOAD ACTIVITY 3
CLICK HERE TO SUBMIT ACTIVITY 3
Purpose
- Teams will calculate power usage for the user types they identified in Activity 2. Teams should learn and understand how to calculate power load per area, average load area, and the total power load.
- Teams will consider the power cycle over time. This will allow teams to understand how the different user types utilize power and when the peaks are.
- Teams should use this activity to learn how they can optimize the efficiency and power of their smart grid design.
Instructions
Calculate the power usage for each of the user types identified in Activity 2: Mapping the System by following the steps below. Log all the calculations in the table. An example is included in red as a guide.
1. Use Table 1 below to record energy use and calculate the total power load for each user identified in Activity 2, Step 7. Add rows to the table as needed. Open this Conversion Calculator and use it to help convert the power values found. See this video on how to use the tool.
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Table 1: Average Power Load |
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User Type |
Power Load per Area (kW/ft2) |
Average Load Area (ft2) |
Total Power Load (kW) |
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Office |
116.4 |
63,000 |
245 |
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2. Find an average value of Source EUI for that user per year in kBtu/ft2 using this report and log the value into the table. Use the Conversion Calculator to help convert the value to kWh/ft2. Log the value in to the table.
116.4 kBtu/ft2 = 34.1 kWh/ft2
3. Convert energy per year into power in kWyr/ ft2, assuming 365 days in one year and 24 hours in one day. Log the value in the table.
34.1 kWh/ft2 / 8760 h = 0.00389 kW/ft2
4. Find an average value of sq. ft. for that user by searching on gov. Log the value in the table.
63,000 ft2
5. Use these values to calculate an estimate for the total power load in kWyr. Log the value in the table.
0.00389 kW/ft2* 63,000 ft2 = 245 kW
6. Now consider how power cycles over time. Using the links listed in the Resources section below or outside sources, research how energy use changes throughout a day and throughout a year for the user type. Take notes or insert related images in Table 2 below. When possible, use the correct geographic region data to get the most accurate estimate. Include a link to all sources used. Add rows to the table as needed.
Use the Data Visualization notebook to understand and visualize how household energy cycles throughout years, months, and days. See this video on how to use the tool.
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Table 2: Power Cycle Over Time |
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User Type |
Daily Cycle Notes |
Yearly Cycle Notes |
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Residential |
Peaks during the day |
Peaks during the summer |
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7. Repeat Steps 2-6 for all users found in Activity 2, Step 7.
8. Considering the different users and power cycles over time, how will your team’s smart grid design handle these power requirements? What design features will be used to maximize efficiency and maintain power during peak hours? Write 1-2 paragraphs using full sentences.
9. When complete, meet with your team’s mentor to check your work and make changes as needed.
10. Save this document as a pdf with the title Activity_3_[Team Name].pdf and have the editor submit it here: https://ufl.qualtrics.com/jfe/form/SV_3wwsZbxwqu39mK2
Resources: Power Cycle Overtime
Use and cite outside resources if needed.
U.S. Energy Use Intensity by Property Type – Energy Star
Average energy use per year for different user categories
Energystar.gov – Energy Star
Use the search bar to find reports on energy use throughout the U.S.
Energy Sustainability of Food Stores and Supermarkets – Energies Journal
Journal paper on energy use in grocery stores
Business Energy Advisor – Tennessee Valley Authority
Energy use information for many types of businesses