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Report IDEEB NO.2: Eco-factor Method
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energi och Bioekonomi, Klimatisering och installationsteknik.
2004 (Swedish)Article in journal (Other (popular science, discussion, etc.)) Published
Abstract [sv]

This work is a part of the EU-Energie project IDEEB, ”Intelligently Designed Energy Efficient Buildings”. The principal objective with the IDEEB project is to develop new guidelines that will facilitate to overcome non-technical barriers for renewable energy sources and sustainable technologies, in order to achieve energy efficient buildings with good indoor climate and low environmental impact. To avoid the indoor climate problems that are seen all too often in contemporary office buildings, it is essential that energy optimisation is integrated with assessment of indoor climate. An improvement on one objective is only wanted if it does not have detrimental effects on the other. One part of the project deals with developing an assessment concept for an iterative design process of office buildings with integrated energy solutions. A concept that will enable assessment and optimisation of energy sources and alternative technical energy solutions, where the assessment will focus on the energy use and its related environmental impact due to conditioning of the indoor environment in the building in the operation phase. An Eco-factor method will be used for the assessment of the energy related environmental impact and indoor climate. This report aims to develop the Eco-factor method and define its index system. An indexing system has been devised that incorporates environmental effects of energy use with thermal and atmospheric indoor climate in a score on a common ”scale” from 0-100%, called the ”Eco-factor”. The ”Eco-factor” is calculated by weighted addition of sub-scores, which in turn are calculated by scoring functions based on indicators of physical properties (namely energy use, air-borne emissions, plus indoor temperature, velocity, and concentration fields). Several suggestions of weighting factors, based on a literature survey, are discussed. Only the operative phase of the building life cycle is considered, since studies show that – with present building and energy practice - the operative phase accounts for the large majority of the energy related emission to the external environment. Thus, the main part of the energy related impact from a building can be assessed by calculation with a relatively small amount of input data. It is the intention that the assessment concept with the Eco-factor should be used: o By architects and engineers in the design of a building, for supplying a quick overview of the effect of changing key parameters as room height, air change rate, internal loads, control strategies, etc. This should allow for rapid iterations, showing the designers potential for improvements on either energy use or indoor climate, but at the same time highlighting perhaps unforeseen dangers, for instance of compromising indoor climate in order to improve the energy performance. o For optimising the indoor climate and energy related environmental impact during operation of the building. The Eco-factor is based on physical properties that can be either measured directly, or programmed into a BEMS control system.

Place, publisher, year, edition, pages
2004. 84- p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-7388Local ID: 8183OAI: oai:DiVA.org:ri-7388DiVA: diva2:965249
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2017-01-31Bibliographically approved

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