37º IAHS World Congress on Housing: - Universidad de Cantabria

XXXVII <strong>IAHS</strong><strong>World</strong> <strong>Congress</strong> on HousingOctober 26 – 29, 2010, Santander, SpainCODE: 278ENERGY EFFICIENCY IMPROVEMENT ON THE EXAMPLEOF MODERN MOVEMENT BUILDINGSI. Muraj, Z. Versic, and D. MandicFaculty of ArchitectureUniversity of Zagreb, Zagreb, Croatiae-mail: iva.muraj@arhitekt.hrKey words: modern architecture, preservation, renovation, building physics, construction loss, andenergy balanceAbstractBuildings from the modern era require a comprehensive study of the interaction betweenarchitecture, function, structure and building climate prior to renovation. The energy index ofexisting houses is much higher in comparison to today’s standard for new houses. Seventyyears after they were built, it is unavoidable that many building components and interiorfittings are worn out. Better energy efficiency can be achieved only by physical change to thebuilding fabric, so the main goal of this research was to investigate how to improve energyefficiency in a way that it does not harm the special interest of historic buildings or increasethe risk of long-term deterioration to existing fabric.Retaining existing elements of construction in historic buildings and seeking to enhance theirthermal performance in benign ways is a heritage conservation principle in line with theconcept of sustainability. Conditions and requirements in terms of building physics andclimate present new challenges in the practice of heritage conservation. This research showsthat with the appropriate renovation measures the energy requirement of existing houses canbe brought up to today’s standard for newly built houses. Differences in applying renovationmeasures result from the level of building conservation.37º <strong>IAHS</strong> <strong>World</strong> <strong>Congress</strong> On Housing Science 160