Green Ranking and Rating Systems

Transcription

1 Embedded Energy Energy consumption in buildings occurs in five (5) phases: 1. The energy used in the manufacturing of the building materials This is called Embedded energy 2. The energy used to transport materials to building sites This is called Grey energy 3. The energy used in the actual construction of the building This is called Induced energy 4. The energy consumed in running the building once occupied This is called Operational energy 5. The energy consumed in the demolition process Concrete, aluminum and steel are among the materials with the highest Embedded energy content This is called Demolition energy Embedded Energy consumption can be reduced by using different building materials Green Ranking and Rating Systems Energy Star / LEED / HERS 1

2 ENERGY Star sponsored by the US Govt. ENERGY STAR certified new homes are designed and built to standards well above most other homes on the market today They deliver energy efficiency savings of up to 30 percent when compared to typical new homes Requirements set by the U.S. Environmental Protection Agency (EPA) A new home that has earned the ENERGY STAR label has undergone a process of inspections, testing, and verification to meet strict delivering better quality, better comfort, and better durability 2

3 About ENERGY Star The ENERGY STAR program was established by EPA in 1992, under the authority of the Clean Air Act Section 103(g). Section103(g) of the Clean Air Act directs the Administrator to "conduct a basic engineering research and technology program to develop, evaluate, and demonstrate non regulatory strategies and technologies for reducing air pollution." In 2005, Congress enacted the Energy Policy Act. Section 131 of the Act amends Section 324 (42 USC 6294) of the Energy Policy and Conservation Act, and "established at the Department of Energy and the Environmental Protection Agency a voluntary program to identify and promote energy efficient products and buildings in order to reduce energy consumption, improve energy security, and reduce pollution through voluntary labeling of or other forms of communication about products and buildings that meet the highest energy efficiency standards." LEED (Leadership in Energy & Environmental Design) sponsored by the U.S. Green Building Council (private sector) is a rating system that encourages innovative and established approaches to constructing the built environment LEED is a program that provides third party verification of green buildings Energy efficiency and environmental sensitivity are the defining attributes to a LEED certified homes LEED is a certification system for buildings and a professional credential that affirms your advanced knowledge in green building as well as expertise in a particular LEED rating system 3

4 LEED Credentials (Professional) LEED Green Associate demonstrates a solid, current understanding of green building principles and practices LEED AP Building Design + Construction for professional with expertise in design and construction LEED AP Operations for professionals implementing sustainable practices through enhanced operations and maintenance LEED AP Interior Design for professionals in the design, construction and improvement of commercial interiors and tenant spaces that offer a healthy, sustainable and productive work environment LEED AP Homes for professionals involved in the design and construction of healthy, durable homes that use fewer resources and produce less waste LEED AP Neighborhood Development for professionals participating in the planning, design and development of sustainable, pedestrian friendly neighborhoods LEED Rating Systems (Buildings) Rating systems are groups of requirements for projects that want to achieve LEED certification. Projects earn points to satisfy green building requirements Within each of the LEED credit categories, projects must satisfy prerequisites and earn points The number of points the project earns determines its level of LEED certification 4

5 LEED Rating Systems (Buildings) Rating systems are groups of requirements for projects that want to achieve LEED certification. Additional LEED for Homes credit categories Projects earn points to satisfy green building requirements Within each of the LEED credit categories, projects must satisfy prerequisites and earn points Additional LEED for Homes credit categories The number of points the project earns determines its level of LEED certification Two Bonus Credit Categories 5

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7 Top 10 U.S. Cities Ranked By Total Number of LEED Projects as of 5/4/2012 Home Energy Rating System (HERS) Developed by the Residential Energy Services Network (RESNET) The HERS Index is the industry standard by which a home s energy efficiency is measured Government agencies that recognize the HERS Index Department of Energy (DOE), Department of Housing and Urban Development (HUD) and the Environmental Protection Agency (EPA) 7

8 Home Energy Rating System (HERS) The HERS Calculations require us to think about energy in different conceptual ways, and requires us to identify what specific purposes we use energy for Legend: E=energy consumption, wh=water heating, la=lights and some appliances, PE=purchased energy (fraction) Legend: PE=purchased energy, E= energy Home Energy Rating System (HERS) 8