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Buildings 2018, 8(11), 154; https://doi.org/10.3390/buildings8110154

State of Knowledge of Thermal Bridges—A Follow up in Sweden and a Review of Recent Research

Division of Energy and Building Design, Department of Architecture and Built Environment, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
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Received: 10 October 2018 / Revised: 31 October 2018 / Accepted: 5 November 2018 / Published: 9 November 2018
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Abstract

It is important to minimize transmission heat transfer losses through the building envelope when designing and building energy efficient buildings in heating dominated climates. In such a climate, a large part of the space heating demand is caused by transmission heat transfer losses through the building envelope. Calculations of these losses must be carried out in a correct way to ensure a properly sized heating system and a good indoor climate. Furthermore, underestimating the transmission heat transfer may lead to energy costs that exceed expectations. A Swedish study was published five years ago which concluded that the state of knowledge was low and simplified methods used were not accurate. Five years has passed since the previous study. The purpose of this follow-up is to investigate whether the state of knowledge among Swedish consultants has increased and to review the progress within the international field. The study shows that little has changed in Sweden. The state of knowledge regarding different measuring methods and the effect on thermal bridges is still not satisfying. Furthermore, the review of recent research shows that the relative effect of thermal bridges vary greatly. More guidelines and education/training are needed. Further research should be carried out with a holistic approach where thermal bridges are investigated with varying construction types, energy efficiency of building envelopes and different measuring methods. View Full-Text
Keywords: thermal bridges; EN ISO 13789; EN ISO 10211; transmission heat transfer; dimensions; buildings; review; survey; Sweden thermal bridges; EN ISO 13789; EN ISO 10211; transmission heat transfer; dimensions; buildings; review; survey; Sweden
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Berggren, B.; Wall, M. State of Knowledge of Thermal Bridges—A Follow up in Sweden and a Review of Recent Research. Buildings 2018, 8, 154.

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