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T. J. Padayhag, U. Pont, A. Mahdavi:
"Thermal and environmental performance implications of new versus retrofitted buildings: A case study";
Talk: Central Europe towards Sustainable Building 2016 - Innovations for sustainable Future, Prague, Czech Republic; 2016-06-22 - 2016-06-24; in: "(Printed) Proceedings of CESB 2016: Central Europe towards sustainable building 2016 - innovations for sustrainable future", P. Hàjek, J. Tywoniak, A. Lupisek (ed.); Prague, Czech Republic (2016), ISBN: 9788027102488; Paper ID 1351 (p.873-880), 8 pages.

This contribution addresses a fundamental question of energy-conscious building planning: How does an existing, yet to be adapted and retrofitted building perform in comparison to a planned-from-scratch new building? In this context the present contribution illustrates the results of a case study: Two objects, a yet-to-be-adapted residential house built in the early 1950ies and an alternative in form of a yet-to-be-build new building are compared regarding i) thermal performance and energy efficiency, ii) ecological footprint, and iii) cost. Given the fact that most clients decide to invest in a specific building - new or existing - and then use the building for an average time-span of 30 years, the energy efficiency was evaluated over such a period of time. As in the planning of both the new building and the retrofit design of the existing building different design options were available, a set of different scenarios were created. For each of these scenarios calculations and numeric simulations were performed.

(keine deutsche Version) This contribution addresses a fundamental question of energy-conscious building planning: How does an existing, yet to be adapted and retrofitted building perform in comparison to a planned-from-scratch new building? In this context the present contribution illustrates the results of a case study: Two objects, a yet-to-be-adapted residential house built in the early 1950ies and an alternative in form of a yet-to-be-build new building are compared regarding i) thermal performance and energy efficiency, ii) ecological footprint, and iii) cost. Given the fact that most clients decide to invest in a specific building - new or existing - and then use the building for an average time-span of 30 years, the energy efficiency was evaluated over such a period of time. As in the planning of both the new building and the retrofit design of the existing building different design options were available, a set of different scenarios were created. For each of these scenarios calculations and numeric simulations were performed.

retrofit, thermal performance, decision support, cost, environmental impact