Building Labelling and Sustainability in Retrofitting

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1 Building Labelling and Sustainability in Retrofitting Maija Virta M.Sc.(Eng.) CEO, Green Building Council Finland REHVA Fellow Member of ASHRAE 1

2 Labelling, Sustainability Measures & Increased Value over Life-time LEED Existing Building: Operation & Maintenance LEED Commercial Interiors / WWF Green Office TOOLS: LEED New Construction BIM IN-USE Checklist of items to be focused Sustainability indicators: Technical Functional Social Economic Environmental (EN 15978, ) DEMOLISH 2

3 Building Labelling to Increase Value Evaluate environmental and social performance of building The allocation of points between credits is based on the potential environmental impacts and human benefits (credit weighting) Each credit is allocated points based on the relative importance of the building-related impacts that it addresses. Labelled buildings are more valuable to owners: higher sales value and rent level with shorter transaction time

4 LEED Leadership in Energy and Environmental Design Created and developed by U.S. Green Building Council Based on third party evaluation Certificate is given by USGBC Rating levels: Certified, Silver, Gold and Platinum. LEED tools: New Construction, Existing Buildings: Operations & Maintenance, Commercial Interiors (vuokralainen), Core & Shell, Schools, Retail, Healthcare, Homes, Neighborhood Development

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7 Raw material supply Transport Manufacturing Transport Construction and installation processes Use Maintenance Repair Replacement Refurbishment De-construction and demolition Transport Waste processing Disposal Re-use, recovery, recycling potential pren 15978: Sustainability of construction works Assessment of environmental performance of buildings Calculation method BUILDING ASSESMENT INFORMATION BUILDING LIFE CYCLE INFORMATION SUPPLEMENTARY PRODUCT STAGE CONSTRUCTION STAGE USE STAGE END OF LIFE BEYOND LIFE Operational energy use Operational water use 7

8 Indicators describing environmental impacts and resource use (EN 15978) 8

9 Components Performance Routings Material use Work load Commissioning Energy use Water use Waste Costs Income Design Design management Cost analysis Sustainability assessment Tendering process Construction management Start-up of systems Life time commissioning Facility management Risk analysis Portfolio analysis Responsibility reporting Property valuation Due diligence Building Information (BIM) Database PERFORMANCE INDICATORS: e.g. Embodied carbon of building (kgco 2 /m 2 ) Carbon emission of energy use (kgco 2 /m 2 ) Carbon emission of travelling (kgco 2 /person) Primary energy consumption (kwh/m 2 ) Energy use (MJ) Water use (m 3 /person) Landfill waste (kg/person) Indoor air temperature deviation (%) Particculates matter (µg/m 3 ) CO 2 -level of indoor air (ppm) Maintenance cost ( /m 2 ) Energy costs( /m 2 ) Rent income ( /m 2 ) BUILDING LIFE TIME PROCESSES Design Construction Use and maintenance Demolish

10 Market Value of Building Based on Life Cycle Performance of HVAC system Life cycle analysis of a building and its HVAC system: Life cycle cost analysis: Investment cost of HVAC and other mechanical systems Energy consumption Maintenance requirement Replacement cycles Performance indicators: Energy consumption Water consumption Greenhouse gas emissions Waste (e.g. used lights) Indoor air temperature Indoor air quality Life cycle cost (LCC) Performance analysis: Energy simulation Indoor conditions simulations Lighting simulation Building Information Modeling (BIM) => quantities Life cycle assessment (LCA) => environmental impacts Discounted cash flow: Market value = Better indoor environment Net operating income (rent owner s operating costs) Capitalization rate (risk free rate + premium growth + depreciation) Energy cost Maintenance cost Replacement cost HVAC-system flexibility Longer life span of HVAC and other components

11 Example of Market Value Traditional Building Low energy building (-25%) Sustainable Building Rent /m 2,a Maintenance /m 2,a Energy /m 2,a Net rent income /m 2,a Renting process rental months Free rent period rental months Churn rental months Total months rental months Rental period years Net operating income /m 2,a Capitalization rate % Value /m Change % + 2,3 % %

12 Who Is Going to Win in a Long Run? /m 2 kwh/m 2 kgco 2 /m 2 m 3 /person kg/person Platinum 12

13 HVAC in Sustainable Office Buildings - A bridge between owners and engineers Task Force: Maija Virta, Fin Frank Hovorka, Fra Andrei Litiu, Rom Jarek Kurnitski, Est Risto Kosonen, Fin Lars Nielsen, Den Will be available 4/2012: