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3. Energy Resources
3.2 Energy Production and Consumption
3.2.2 Energy Efficiency
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What is energy efficiency calculated as?
Useful energy output / total energy input
An incandescent light bulb has an energy efficiency of
5
%.
LED light bulbs convert
80%
of energy into useful light output.
True
Why is regular maintenance important for energy efficiency?
Keeps equipment running efficiently
Order the following light bulb types from least to most energy efficient:
1️⃣ Incandescent
2️⃣ Compact Fluorescent (CFL)
3️⃣ Light Emitting Diode (LED)
Match the factor affecting energy efficiency with its description:
Technology ↔️ Newer technologies are more efficient
Maintenance ↔️ Regular checks ensure efficiency
Design ↔️ Well-designed systems optimize energy use
Operations ↔️ Proper use improves efficiency
A car engine has an energy efficiency of 20%.
True
Increasing energy efficiency reduces energy
consumption
.
Why are LED light bulbs more efficient than incandescent bulbs?
They use newer technology
What is the role of proper operations in energy efficiency?
Maximizes equipment efficiency
Arrange the following strategies to improve energy efficiency in order of their focus:
1️⃣ Upgrading Technology
2️⃣ Proper Maintenance
3️⃣ Optimizing Design
4️⃣ Improving Operations
What is one example of optimizing design to improve energy efficiency in buildings?
Improving insulation
Match the benefit of improving energy efficiency with its description:
Reduced Energy Consumption ↔️ Less energy required for output
Lower Energy Costs ↔️ Reduced energy bills
Decreased Environmental Impact ↔️ Fewer greenhouse gas emissions
What are four ways organizations and individuals can improve energy efficiency?
Upgrade technologies, maintain equipment, optimize designs, improve operations
Energy efficiency is calculated as the
ratio
of useful energy output to total energy input.
True
What is the efficiency of an incandescent light bulb?
5%
LED light bulbs are the most energy efficient type of bulb discussed in the material.
True
How do operations affect energy efficiency?
Proper training and usage
Match the energy efficiency strategy with its example.
Upgrading Technology ↔️ Switching to LED light bulbs
Proper Maintenance ↔️ Cleaning HVAC systems
Optimizing Design ↔️ Improving building insulation
Ensuring equipment is used and operated correctly is an example of improving
operations
to maximize energy efficiency.
Lower energy costs result directly from reduced energy
consumption
What are the three key benefits of improving energy efficiency?
Reduced consumption, lower costs, decreased environmental impact
Reduced energy consumption directly translates to lower energy bills and
operating expenses
.
True
Upfront costs are a significant barrier to improving energy
efficiency
What is a common barrier to investing in energy efficiency improvements?
Limited access to financing
The Industrial Energy Efficiency Program in Germany improved energy efficiency by
10-15%
in participating factories.
True
Match the case study with its strategy:
City of Seattle Program ↔️ Incentives for HVAC upgrades
Industrial Program in Germany ↔️ Subsidies for energy management systems
Rebate Program in California ↔️ Rebates for efficient appliances
Improvements in battery storage technology will help
optimize
energy use in the future.
True
Adopting energy-saving behaviors, such as turning off lights, is a behavioral change that improves energy
efficiency
.
Increasing energy efficiency helps reduce energy consumption,
environmental impact
, and energy costs.
True
Which type of light bulb has the highest energy efficiency?
LED
Newer technologies often have higher energy
efficiencies
.
Well-designed systems optimize energy use.
True
Proper use of equipment can improve energy
efficiency
.
What is the formula for calculating energy efficiency?
(Output / Input) × 100%
What is the energy efficiency of an LED light bulb in the example provided?
75%
Improved energy efficiency helps lower energy costs and
environmental
impact.
True
Regular maintenance of equipment prevents energy
losses
.
Addressing factors like technology, maintenance, design, and operations can improve overall energy efficiency.
True
Cleaning and tuning up HVAC systems is an example of proper
maintenance
.
See all 60 cards
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