From Copelco

Contents 1 Idea 2 Design Approach, Two Focuses 2.1 Information/Feedback Display (Focus 1) 2.1.1 Feedback 2.1.1.1 Energy, Conservation, Feedback 2.1.1.2 Data Display 2.2 Data Storage 2.3 Data Logger 2.4 Data Acquisition 2.5 Sensors (Focus 2) 2.5.1 Nuts and Bolts 2.5.1.1 Electricity 2.5.1.1.1 Utility Company 2.5.1.1.2 Polyphase AC Circuits 2.5.1.1.3 Induction 2.5.1.1.4 Power Factor

Idea

Setup a system on campus to display energy consumption information to the student body.

Design Approach, Two Focuses

Information/Feedback Display (Focus 1)

Feedback

• How effective is feedback on people?
• How does feedback frequency factor in?
• What kind of feedback? How is it presented?

Energy, Conservation, Feedback

• What feedback related to energy conservation has been done?
  • What commodies were examined?

Data Display

• Tons of data. How can it be displayed as useful information?
• Tables and Graphs? What will students want to see?

Data Storage

Data Logger

Data Acquisition

Sensors (Focus 2)

Nuts and Bolts

Electricity

Utility Company

• What do utilities supply customers with? (volt-amperes)
• What do customers pay for? (watts)
• How do power companies measure electrical consumption?
• What devices do they use?

Polyphase AC Circuits

• Difference between single phase and polyphase AC.
• Why have polyphase circuits?
  • How do they benifit the utility?
  • How od they benifit the customer?
• What phase power do residential consumers normally recieve?
• Power Quality

Induction

• What is an inductor? How do they work?
• The effect of an inductor on alternating current (inductive reactance).
• Reactance and Impedance

Power Factor

• What is power factor?
• What type of ciruits have a power factor of 1?
• What is power factor correction?