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Transcript

Electricity, heat and personal electricity footprint

ECO-SMART

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Intersecting objectives

Purpose/ Learning objective

Facilitation

Ideas for follow-up

Resources required

Source/The day of the lesson: Materials & Class prep.

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Implementation

Electricity, heat and personal electricity footprint

Annexes

ECOSMART CONCEPTUAL MAP

  • Explains the importance of electricity and heat to humans.
  • Explains the effects of changing living conditions on electricity and heating resources
  • Prepares a poster about electricity and heating consumption.
  • Develops projects by measuring and evaluating heat and electricity use, effectiveness and saving


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Implementation

ELECTRICITY, HEAT AND PERSONAL ELECTRICITY FOOTPRINT

Electricity, heat and personal electricity footprint

Annexes

ECOSMART CONCEPTUAL MAP

Annexes

ECOSMART CONCEPTUAL MAP

  • Calculates and evaluates the person's heat and electricity footprint
  • Encourages others to act towards responsible heat and electricity consumption
  • Collaborate with peers to identify action plans to reduce electricity and heat consumption in the school and in private
  • Obtain an understanding of the effects of heat and electricity consumption on the environment
  • Understand the components that electricity and heating consumption
  • Asks relevant questions about electricity and heating consumption conditions and problems
  • Knows the importance of electricity and heating consumption footprint
  • Understands the concept of responsible electricity and heating consumption


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Intersecting objectives

Purpose/ Learning objective

Facilitation

Ideas for follow-up

Resources required

Source/The day of the lesson: Materials & Class prep.

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Implementation

Electricity, heat and personal electricity footprint

ELECTRICITY, HEAT AND PERSONAL ELECTRICITY FOOTPRINT

Annexes

ECOSMART CONCEPTUAL MAP

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Intersecting objectives

Purpose/ Learning objective

Facilitation

Ideas for follow-up

Resources required

Source/The day of the lesson: Materials & Class prep.

6

Implementation

Electricity, heat and personal electricity footprint

ELECTRICITY, HEAT AND PERSONAL ELECTRICITY FOOTPRINT

  • Create the right environment
  • Ensure the expected objective/s are clear

Annexes

  • Track consumption over time by repeating the mapping exercise at home
  • Monthly mappings
  • Challenge on how to save the most
  • Map entire school and compare result to electricity bill

ECOSMART CONCEPTUAL MAP

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Intersecting objectives

Purpose/ Learning objective

Facilitation

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Source/The day of the lesson: Materials & Class prep.

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Implementation

Electricity, heat and personal electricity footprint

ELECTRICITY, HEAT AND PERSONAL ELECTRICITY FOOTPRINT

Annexes

  • Computers with excel
  • Optional: clamp on ampere meter and line splitter


ECOSMART CONCEPTUAL MAP

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Implementation

Electricity, heat and personal electricity footprint

ELECTRICITY, HEAT AND PERSONAL ELECTRICITY FOOTPRINT

Annexes

ECOSMART CONCEPTUAL MAP

Electrical Grid theory

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Electricity, heat and personal electricity footprint

ELECTRICITY, HEAT AND PERSONAL ELECTRICITY FOOTPRINT

Home Heating Systems

Order or borrow a Clamp on ampere meter

Spreadsheet for calculating electric cost

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Annexes

10 min

ECOSMART CONCEPTUAL MAP

Step 1

Step 2

30 min

Step 3

55 min

Instructions step by step

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Purpose/ Learning objective

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Implementation

Electricity, heat and personal electricity footprint

This lesson deals with electricity and how to measure, calculate and become aware of one's own use of it. This knowledge can then be put to use in the school context.


Understand these concepts before the lesson and be able to discuss them with students:

  • Electricity and its history
  • Basic units to measure and calculate electric data:
  • Ampere (A) - the measure of the amount of electric charge passing through the product (or cable or circuit etc.) Can be measured with an amperemeter.
  • Volt (V) - the measure of the strength of the electric charge or electric potential difference in an electric source. Low voltage ie. 1.5 V can be found in a simple battery electric source, higher voltage like 230 V is used in most European households can be measured with a voltmeter.
  • Watt (W) - the measure used to quantify the amount of energy transferred. It is calculated as 1 W = 1 V x 1 A
  • kWh - the measure of the amount of energy transferred over time as kW (1000 W) per hour. This measure is used to calculate household usage of electricity and can also be used to measure device usage.
  • AC - alternating current. Current which periodically reverses direction and changes its magnitude continuously with time. Alternating current is the form in which electric power is delivered to schools and residences, and it is the form of electrical energy that consumers typically use when they plug kitchen appliances, televisions, fans and electric lamps into a wall socket. In EU the current alternates 50 times per second ie. 50 Hz from 0-230 V
  • DC - Direct current, that does not alternate. A common source of DC power is a battery cell in a flashlight. Power grid and electric distribution
  • Renewable and fossil ways to make electricity
  • How to calculate power consumption
  • The differences between old and new appliances ie. LED ligting, heat-pumps etc
  • How to read rating plates and declarations on electric appliances


Above picture shows a rating plate from a coffee brewer

  • The meaning of energy efficiency rating labels



Image above shows an energy efficiency rating label.



Module 1. Desk research, discussion and presentation


Introduce topic

Divide class into groups of 4


Make students reflect on these questions:

  • What is electric power?
  • How is it made?
  • What is a power grid?
  • What is the difference between power from sustainable sources and from fossil?
  • Draw the power grid of the future
  • Why is saving electricity important?

Their answers are collected and discussed in class.


The groups are instructed to make a presentation poster about electric energy

Module 2. Measure, map and analyze school or classroom power consumption


The task in module 2 is to identify power consumption of the environment.

In groups of 4 students identify all electric equipment in the classroom. If possible, this can be conducted in a school kitchen or other room with more appliances.


The purpose is to obtain awareness about the power consumption of the environment and to learn

  • how to find the power consumption of products (effect, wattage)
  • the difference between power W and power over time, kWh, and the cost of power
  • that different products have different power consumption
  • that newer technology can bring power savings ie. LED
  • that some devices have stand by consumption

The students use a spreadsheet to calculate power use and the cost thereof. This can be done as a homework assignment.

Above image shows an example of a spreadsheet used to calculate electric cost


Make students look for and interpret rating plates on devices

Use a clamp meter and a line separator to measure current in different applications

Image shows a line splitter and an clamp ampere meter.


When mapping of electric usage is finished, reflect and discuss results.

  • Make students compare their usage to others: https://ourworldindata.org/grapher/per-capita-energy-use
  • Make students come up with suggestions on how to reduce their consumption at home and in the school.
  • Make students a timeline with the development and maturing of a technology. For example lighting: from incandescent light bulb to LED and identify major breakthroughs


Discussion: how well does the school perform? Does it use energy efficient lamps? Are computers and other electronic equipment configured to save power? Is there a strategic plan in place to save electricity?

How does the school perform compared to other schools? What policies regulate school performance - if any?