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Download 11. Product Group buildings construction
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PRIMES product group sustainable construction Presented by PRIMES Overview Environmental impacts Legal Background Recommended GPP criteria Good practise example Useful Links © Photo courtesy of Vichaya Kiatying-Angsulee by http://www.freedigitalphotos.net PRIMES Public Procurement and products with high environmental leverage PRIMES Environmental impacts by the construction sector © Photo courtesy of askpermission by ICLEI The consumption of energy for heating, cooling, ventilation, hot water, and electricity, and resulting CO2 emissions The consumption of natural resources The consumption of fresh water resources both during construction and during the use phase Emission of substances harmful to human health and the environment during the production or disposal of building materials leading to air and water pollution PRIMES Environmental impacts by the construction sector Negative health impacts on building users due to building materials containing dangerous substances CO2 emissions resulting from the transportation of construction materials and products CO2 emissions resulting from the transportation of construction materials and products © Photo courtesy of askpermission by ICLEI Waste production PRIMES The construction process as a system PRIMES GPP criteria to approch environmental impacts © Photo courtesy of iStock by ICLEI Maximise the energy performance of buildings Ensure high energy efficiency standards for heating, cooling, ventilation and hot water systems, and electronic devices Use guaranteed performance contracts with Energy Service Companies Encourage the use of localised renewable energy sources (lRES) and high efficiency cogeneration © Photo courtesy of SKO-Dogern by ICLEI © Photo courtesy of SustNOW by ICLEI PRIMES GPP criteria to approch environmental impacts © Photo courtesy of iStock by ICLEI Include a systematic Life Cycle Approach (LCA) for building materials Encourage the use of sustainably harvested and produced resources and construction/insulation materials Encourage the installation of high-end water saving technologies and reduce the use of freshwater during the construction process. Encourage the use of non-toxic building materials by also building upon the availability of renewable raw materials based construction materials © Photo courtesy of SKO-Dogern by ICLEI © Photo courtesy of SustNOW by ICLEI PRIMES GPP criteria to approch environmental impacts © Photo courtesy of iStock by ICLEI Encourage the use of substitute substances/ materials for dangerous building materials by also building upon the availability of renewable raw materials based construction materials Use energy efficient vehicles for transportation and on the building site Apply effective supply chain management systems Minimise waste production and ensure propoer waste management of demolition and construction waste © Photo courtesy of SKO-Dogern by ICLEI © Photo courtesy of SustNOW by ICLEI PRIMES Directive 2002/91/EC European Directive on Energy Performance of Buildings All Member States to develop calculation procedures for determining energy performance in accordance with a number of requirements Method for calculating energy performance and standards set free to select, within the general framework No single methodology, no indicator and no performance benchmark for energy performance applicable in all countries © Photo courtesy of ICLEIbooklet by ICLEI PRIMES Directive 2010/31/EU (recast) European Directive on Energy Performance of Buildings As of 31 December 2020 new buildings in the EU will have to consume 'nearly zero-energy'. Public authorities that own or occupy a new building should set an example by building, buying or renting such 'nearly zero-energy building' as of 31 December 2018 A harmonised calculation methodology to push-up MS minimum energy performance requirements towards a costoptimal level A more detailed and rigorous procedure for issuing energy performance certificates will be required as well as control systems to check the correctness of performance certification © Photo courtesy of ICLEIbooklet by ICLEI PRIMES Directive 2006/32/EC European Directive on Energy End-Use Efficiency and Energy Service Role of public procurement in achieving the envisaged reduced energy consumption by tendering for highly energy efficient technologies mentioned Influence on the selection and purchase of energy using devices in buildings such as electric pumps, lighting systems, IT equipment and white goods © Photo courtesy of ICLEIbooklet by ICLEI PRIMES Cost considerations Over life span of a building, running and maintenance costs will exceed the initial costs of construction. Through the design process the largest impact can be made on the 85% figure. Life cycle costing as standard procedure for construction work allows an assessment (in monetary value) taking into account all costs A variety of European and national LCA-tools exist © Photo courtesy of Invisibleviva_dreamstime by ICLEI PRIMES Recommendations: Subject Matter Include sustainability aspects within the subject matter Example: Construction of new energy efficient [insert building type], using environmental friendly construction materials and products or Renovation of building stock of [insert building type] to high energy efficiency standards using environmental friendly construction materials and products. (‚GPP Training Toolkit‘) Source: © Image courtesy of Witthaya Phonsawat at FreeDigitalPhotos.net PRIMES Recommendations: Technicial Specifications Energy consumption standards: The overall [net/final/primary] energy demand of the building (including heating, cooling, hot water, ventilation and electricity) is [X] % lower than the maximum defined in [insert relevant national legislation]. Energy efficiency training: A training session must be given to the building manager on the energy efficient use of the building following the completion of construction/renovation works. The bidder must outline the content of the training. Localised RES (I-RES): A minimum of [X] % of [net, final or primary] energy demand must be provided by localised renewable energy sources (l-RES). L-RES means renewable energy source generating capacity within the building site itself (e.g. solar panels, biomass boilers, wind turbines etc.) PRIMES Recommendations: Award Criteria Award will go to “Most economically advantageous tender (MEAT)” Source: © Image courtesy of Stuart Miles at FreeDigitalPhotos.net Innovative energy efficient building services: submitting of specific proposals for achieving energy efficient lighting, heating, cooling, high-efficiency cogeneration and ventilation in the building evaluating the estimated energy savings and the use of passive components Lowest energy consumption and use of localised RES sources and/or high efficiency cogeneration: Points will be awarded on the basis of a sliding scale between the best and worst bids PRIMES Recommendations: Further Ideas PRIMES Ecolabels No overall labelling system for environmental/sustainable construction exists Ecolabels exist for a variety of construction materials and products: the environmental criteria underlying an ecolabelling scheme can provide valuable assistance in developing environmental criteria and the labels themselves constitute easy ways of demonstrating compliance with those criteria PRIMES Retrofitting of buildings Retrofitting an existing building can often be more cost-effective than building a new facility. Important to initiate energy conservation retrofits to reduce energy consumption and the cost of heating, cooling, and lighting buildings Recommendations: Recommission all energy and water systems to determine they are operating at optimum performance; then upgrade energy and water systems to minimize consumption. Evaluate occupancy patterns, then apply daylight, HVAC and lighting sensors in appropriate locations. Incorporate energy efficient lighting into the project as appropriate for the tasks and functions of the spaces. Develop a plan to optimize the recycling and reuse of demolition debris and construction waste to minimize waste sent to landfills. PRIMES Retrofitting of buildings Determine if natural ventilation and fresh air intake are feasible alternatives to reduce heating and cooling loads. Investigate renewable energy options that can offset the purchase of fossil fuel-based energy. Consider solar shading devices for windows and doors, including those that generate electricity by photovoltaic (PV) devices. Replace existing windows with high-performance windows appropriate for climate and exposure. If building requires security upgrade, evaluate blast resistant windows and films. If building is located in a high noise area, evaluate windows that also include adequate exterior to interior noise reduction. Analyze the benefits of distributed generation if the building is in a campus cluster or can share the on-site energy produced with adjacent buildings. PRIMES Retrofitting of buildings Balance the project's sustainable goals with its security goals including protecting the building and its occupants from natural and man-caused disasters. Certain site renovations can improve the energy performance of the building including reducing the heat island effect. Determine if a cool roof or green roof are cost-effective ways to reduce heat island effect and stormwater runoff. Employ Energy Star and/or a green building rating system for existing buildings like LEED for Existing Buildings: Operations and Maintenance (LEED EBOM) or Green Globes for Existing Buildings to gage the building's level of performance. For historic buildings, update systems appropriately to maintain a balance between the need for energy and water savings with the character of the original building fabric. PRIMES Retrofitting of buildings Take the opportunity afforded by the building renovation to incorporate sustainable operations and maintenance practices and switch to green cleaning products and methods. To ensure a newly renovated building continues to perform as designed, measure the performance of the building regularly. If not already metered, plan on installing meters for electric, gas, water and other utilities. Smart meters and submeters are preferable to monitor real time consumption, control demand and increase tenant accountability PRIMES Passive House Concept Sound and relatively low-cost method to achieve significant energy savings in residential and other buildings Achievable for a wide range of building types (including renovation work). It is a good option to include the Passive House specifications as a minimum requirement in the construction project. Basic design principles : reduce heat loss (e.g. insulation) reduce electricity consumption (e.g. intelligent lighting systems) utilise natural solar heat (e.g. window area sun orientation) display and control energy consumption, select the energy source (e.g. solar panels, CHP, biomass boiler) PRIMES Other initiatives/projects SCI-Network connects public authorities looking to procure innovative and sustainable solutions within their construction projects. It is a European network of public authorities working together to explore European best practice in construction procurement, and identify how best to encourage innovation and sustainability. PRIMES Other initiatives/projects BUILD-UP Webportal is intended to reaps benefits of Europe's collective intelligence on energy reduction in buildings brings together new practitioners and professional associations motivating them to exchange best working practices and knowledge and to transfer tools and resources provides public authorities staff with access to many resources on the legislation, toolkits and guidelines produced by other cities, regions or countries A way to share expertise with peers PRIMES Other initiatives/projects The Covenant capaCITY platform has an entire learning & trainer module on GPP as a means to implement SEAP actions Once you register you have access to a wealth of information regarding GPP, buildings etc. for the set-up or revision of SEAPs Website: www.covenant-capacity.eu Source: © www.covenant-capacity.eu PRIMES Example: Tender Overview Subject matter: Construction works for a primary school building meeting the passive-house standard Technical specifications: The primary energy demand of the building should be at least 10% lower than the required minimum standard for new buildings based on the standards of [X] Selection criteria: The technical capability of the bidder for building a bridge in a protected area must be demonstrated, for example by having a certified environmental Management System (EMS) for such projects Award criteria: Additional points will be awarded for the percentage of final energy demand provided by localised renewable energy sources [include acceptable RES], above the minimum standard set in the technical specifications. [Following: specification of the assessment scheme (e.g. bonus system] PRIMES Example: Tender Overview Award criteria: Additonal points will be awarded for lowest energy consumption and use of localised RES sources and/or high efficiency cogeneration Award will go to most economically advantageous tender (MEAT) Preddvor, Slovenia Best practise example © Photo courtesy by Slovenia.info by Introduction Seventeen years ago, it was decided that appropriate measures would be taken to ensure that the Municipality of Preddvor would become as energy independent as possible At the end of 2011, Preddvor Municipality adopted the “Local Energy Concept” Decision to invest in a new, low-energy kindergarten facility to improve energy efficiency: Construction of a low energy building using environmentally friendly materials, emphasising the use of wood products and renewable energy. The goal was for the kindergarten facility to become a passive building with an annual heating demand of less than 15kWh/m² (energy class: B1) Preddvor, Slovenia Best practise example © Photo courtesy by Slovenia.info by Technical Specifications The orientation of the kindergarten to maximise natural light and the roof had to be suitable for solar module installation and energy production Strict technical specifications given for the maximum allowed heat transfer coefficient (k 0.35K/m2 K) and for the characteristics of external and internal construction materials (e.g. triple glazing) Local heating specificities (heating through wooden biomass) to be taken into consideration during construction Local Slovenian legislation regarding heat transfer, solar radiation transparency (>50%) and the use of renewable energy sources (>25% of total heating) to be respected Preddvor, Slovenia Best practise examples © Photo courtesy by Slovenia.info by Results Natural materials used to construct most of the building. More specifically, wood from Larix sp. (larch tree), built-in wooden doors and windows with triple glazing Kindergarten heated by biomass from a central boiler in Preddvor Central ventilation system installed (air recuperation efficiency is over 80%) 96.7 kW photovoltaic system set up on the roof Received environmental awards: Gold medal for the Most Energy Efficient Public Building The Finance newspaper & Slovene EKO Fund Award for Environmentally Friendly Company of the Year 2012 in Slovenia PRIMES Further resources Procura+ criteria on building and construction renovation http://www.procuraplus.org/fileadmin/files/Manuals/English_manual/Proc ura__Manual_Chapter6f_-_Buildings.pdf GPP criteria: http://ec.europa.eu/environment/gpp/pdf/toolkit/construction_GPP_prod uct_sheet.pdf Sustainable construction and innovation through procurement http://www.sci-network.eu/ BUILD-UP: EU portal for energy efficiency in buildings http://www.buildup.eu/ INSPiRe project on innovative and energy-efficient buildings: http://www.inspirefp7.eu/ Covenant Capacity: http://www.covenant-capacity.eu/ (after registering free access to training incl. Buildings modules)
