3.2.2 Energy Efficiency

• 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.