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Secondary School Lesson Notes and Scheme of Work

SS1 Second Term Air Conditioning And Refrigeration Lesson Note and Scheme of Work

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SS1 Second Term Air Conditioning And Refrigeration Lesson Note and Scheme of Work


Second Term: Air Conditioning And Refrigeration Lesson Note and Scheme of Work


Week 1: Advanced Refrigeration Systems

Lesson Note:


Introduction to advanced refrigeration systems: cascade refrigeration, multi-stage compression, absorption refrigeration.

Understanding the principles and applications of each advanced refrigeration system.

Overview of emerging refrigeration technologies.

Scheme of Work:


Lecture on advanced refrigeration systems and their working principles.

Case studies: analyzing real-world applications of cascade refrigeration and absorption refrigeration.

Group discussion: exploring the potential of emerging refrigeration technologies in sustainability and energy efficiency.

Week 2: Refrigeration System Optimization

Lesson Note:


Importance of system optimization for energy efficiency and cost-effectiveness.

Overview of strategies for optimizing refrigeration systems: variable speed drives, heat recovery, advanced controls.

Introduction to energy management systems (EMS) for monitoring and optimizing system performance.

Scheme of Work:


Practical session: demonstration of variable speed drives and their impact on compressor efficiency.

Group project: designing an energy management system for a refrigeration plant.

Presentation of EMS designs and peer feedback.

Week 3: Environmental Impact and Regulations

Lesson Note:


Understanding the environmental impact of refrigerants: ozone depletion potential (ODP), global warming potential (GWP).

Overview of regulations and policies governing refrigerant use and disposal.

Introduction to environmentally friendly refrigerants and alternative technologies.

Scheme of Work:


Lecture on environmental considerations in refrigeration and air conditioning.

Group discussion: debating the pros and cons of different refrigerants and regulatory approaches.

Case study: analyzing the environmental impact of a refrigeration system and proposing sustainable alternatives.

Week 4: Advanced Air Conditioning Systems

Lesson Note:


Introduction to advanced air conditioning systems: variable refrigerant flow (VRF), chilled beam systems, geothermal heat pumps.

Explanation of the working principles and benefits of each system.

Overview of design considerations and applications.

Scheme of Work:


Lecture on advanced air conditioning technologies and their advantages.

Site visit to a building with VRF or chilled beam systems.

Group project: designing an HVAC system for a commercial building using advanced technologies.

Week 5: Indoor Air Quality Management

Lesson Note:


Importance of indoor air quality (IAQ) for occupant health and comfort.

Overview of pollutants commonly found in indoor environments.

Strategies for IAQ management in air conditioning systems.

Scheme of Work:


Seminar on indoor air quality and its impact on health and productivity.

Indoor air quality testing: sampling and analysis of air pollutants.

Group discussion: developing IAQ management plans for different indoor environments (e.g., offices, schools, hospitals).

Week 6: Energy Efficiency in HVAC Systems

Lesson Note:


Understanding the importance of energy efficiency in HVAC systems.

Overview of energy-efficient HVAC technologies and design strategies.

Introduction to energy modeling and simulation tools.

Scheme of Work:


Workshop on energy-efficient HVAC design principles.

Hands-on session: using energy modeling software to analyze system performance.

Group project: optimizing the energy efficiency of a building’s HVAC system using simulation tools.

Week 7: HVAC System Commissioning and Performance Testing

Lesson Note:


Importance of commissioning for ensuring optimal performance of HVAC systems.

Overview of commissioning procedures and standards.

Explanation of performance testing methods and requirements.

Scheme of Work:


Practical session: conducting commissioning tests on HVAC equipment.

Field trip to a building undergoing HVAC system commissioning.

Group activity: developing commissioning checklists and procedures for different types of HVAC systems.

Week 8: HVAC System Maintenance Strategies

Lesson Note:


Importance of regular maintenance for prolonging the life of HVAC equipment and ensuring efficient operation.

Overview of preventive maintenance tasks and schedules.

Introduction to predictive maintenance techniques and condition monitoring.

Scheme of Work:


Workshop on HVAC system maintenance best practices.

Hands-on training: performing routine maintenance tasks on HVAC equipment.

Case studies: analyzing the cost-effectiveness of different maintenance strategies.

Week 9: Advanced Control Systems for HVAC

Lesson Note:


Introduction to advanced control systems for HVAC: building automation systems (BAS), smart thermostats, demand-controlled ventilation.

Explanation of the benefits of advanced control systems in terms of energy savings and comfort.

Scheme of Work:


Seminar on the role of building automation in optimizing HVAC performance.

Hands-on session: programming smart thermostats and BAS controllers.

Group project: designing a demand-controlled ventilation system for a commercial building.

Week 10: Retrofitting and Upgrading HVAC Systems

Lesson Note:


Overview of retrofitting and upgrading options for existing HVAC systems.

Understanding the considerations and challenges involved in retrofit projects.

Introduction to financing options and incentives for HVAC system upgrades.

Scheme of Work:


Lecture on retrofitting strategies and technologies.

Case studies: successful HVAC retrofit projects and lessons learned.

Group discussion: developing retrofit proposals for different types of buildings.

Week 11: Revision Week



Review of key concepts and principles covered in previous weeks.

Practice quizzes and problem-solving exercises.

Peer-led study groups for focused review sessions.

Week 12: Examination Week



Written examination covering topics from the entire term.

Practical assessment: demonstration of skills in advanced refrigeration and air conditioning technologies, maintenance, and optimization.

Week 13: School Dismissal Week



Recap and reflection on the term’s lessons and activities.

Distribution of report cards and feedback on student performance.

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