Key Concepts Energy Efficiency Resources for Undergraduate Engineering Energy-Mass Balance Energy Efficiency Resources for Undergraduate Engineering Design and Energy Efficiency Key Concepts In this episode of the energy efficiency resources for undergraduate engineering, we’ll explore the key concepts for Design and Energy Efficiency.
Design Lifecycle need definition conceptual design preliminary design Energy-Mass Balance Design Lifecycle need definition conceptual design Engineers can make significant energy savings in the early design stages for new engineering projects This module covers how engineers can incorporate energy efficiency considerations into the main phases of engineering projects. preliminary design procurement detailed design and construction operation optimisation end-of-life
Office buildings 86% Lighting lamps 98% Rock crusher 94% Energy-Mass Balance Percentage of life-cycle energy during operation Office buildings 86% The front-end design process for new engineering projects provides the most significant opportunity to improve energy efficiency. Decisions made during the early design phases of engineering projects lock in up to 90% of the life-cycle operational costs Lighting lamps 98% Rock crusher 94% Refrigerator 92% Cars, vehicles >65%
Percentage of life-cycle energy during operation Energy-Mass Balance Percentage of life-cycle energy during operation Traditional Design SYSTEM DESIGN DETAIL DESIGN Investing more time and effort in the early design phases has been shown to reduce the system life-cycle costs, increase the system quality, and reduce the development costs, time, and risk. PRODUCTION INTEGRATION TEST SYSTEM DESIGN DETAIL DESIGN PRODUCTION INTEGRATION TEST Saved Time /Cost ‘Systems Thinking’ Design time/cost >
Design Lifecycle need definition conceptual design preliminary design Energy-Mass Balance Design Lifecycle need definition conceptual design It is important to note that efforts to improve energy efficiency in the front-end design phase can be undone in the procurement and detailed design and construction phases of engineered projects. This is because companies often contract engineering firms to undertake both the detailed design, construction and operation of projects. preliminary design procurement detailed design and construction operation optimisation end-of-life
Design Lifecycle need definition conceptual design preliminary design Energy-Mass Balance Design Lifecycle need definition conceptual design In the past, because of split incentives in contracts, property companies often took the lowest cost bid from engineering firms when undertaking detailed design or constructing commercial building projects. This ignored the fact that cutting costs on detailed design and construction left buildings with far higher operational costs. Better incentives and rewards for engineering contractors are needed to deliver optimal energy efficient outcomes. preliminary design procurement detailed design and construction operation optimisation end-of-life
Design Lifecycle need definition conceptual design preliminary design Energy-Mass Balance Design Lifecycle need definition conceptual design Once an engineered system is built as a prototype there are again opportunities to test the system and identify additional energy efficiency opportunities, such as optimising the running and operation of variable speed drives. preliminary design procurement detailed design and construction operation optimisation end-of-life
Design Lifecycle need definition conceptual design preliminary design Energy-Mass Balance Design Lifecycle need definition conceptual design Finally, designing for the end-of-life during the earlier phases can maximise resource recovery, minimise processing cost, and optimise the system salvage value. Recycling of materials saves significant amounts of energy compared to using raw materials. preliminary design procurement detailed design and construction operation optimisation end-of-life
Key Concepts Energy Efficiency Resources for Undergraduate Engineering Energy-Mass Balance Energy Efficiency Resources for Undergraduate Engineering Design and Energy Efficiency Key Concepts Explore the details, examples and exercises of design and energy efficiency opportunities in the rest of this module.