Energy Management

Energy Efficiency and Energy Efficiency and Energy ConservationEnergy Conservation

• Energy efficiency involves the use of technology that requires less energy to perform the same function.

• Energy conservation is any behavior that results in the use of less energy .

Past Achievements of Past Achievements of Energy EfficiencyEnergy Efficiency

• Mandated efficiency improvements for refrigerators in the 80’s have provided energy savings equal to 40 large power plants. (Rocky Mountain Institute)

• It is estimated that efficiency improvements already made have reduced our total energy consumption by 25%. (Alliance to Save Energy)

• According to U.S. EPA, our nation’s buildings use 30% more energy than they need to. These savings can be had simply by using existing technology.

There is still a lot to be done!

HEATMOISTURE

AIR

The House is a System

• Heat is a form of energy• When heat moves from place to

place, it is referred to as “heat transfer”

• Heat transfer occurs in three ways:

ConductionConvectionRadiation

Heat Transfer

Attic Air Sealing

After

Before

Blower Door Test

• Measures the amount of air flow through a house

• Used to determine:– How much air sealing is

needed prior to weatherization

– If there is enough air flow after weatherization

Science Notebooks

Describe your understanding of the House as a System Concept.

• Building Buddies (Primary)

• Monitoring and Mentoring (Elementary / Intermediate)

• Learning and Conserving (Secondary)

What Services What Services Does Energy Does Energy

Provide for Us at Provide for Us at School?School?

•Heating, Ventilation and Air Heating, Ventilation and Air Conditioning (HVAC)Conditioning (HVAC)o Building ShellBuilding Shell

• LightingLighting• Electrical DevicesElectrical Devices

Energy System Components

LED Lighting

04/13/23 The NEED Project 16

LED Lighting

04/13/23 The NEED Project 17

• Uses at least 75% less energy than incandescent lighting

• Lasts 35 to 50 times longer than incandescent lighting and about 2 to 5 times longer than fluorescent lighting

• LEDs produce very little heat