Case study in Headquarter of the Authority of

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 General information

• Client: LIG - Real Estate Company - Province of Styria • Architect renovation: Arch. DI Erwin Kaltenegger, Passail • Office building for the District Authority of Weiz • Constructed 1964 • 1907 m2 net floor area • Concrete frame construction with bricks • District heating with biomass plant • Renovation will be finished in June 2011

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 Renovation measures - Overview

• Thermal insulation with multifunctional façade system • Mechanical night cooling with existing air condition • Circulating heat exchanger based on air • Comprehensive evaluation measures (energy monitoring)

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 Renovation measures - GAP Solution Façade System

• Pre-fabricated multifunctional façade element (façade and insulation) • Stable honeycomb structure with glass elements • Reduction of heat losses by solar gains in the façade gap (dynamic u-value)

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 Renovation measures – Mechanical night cooling

• No conventional air condition (no vapour compression machine based on electrical energy for offices) • Mechanical night ventilation in summer – Using lower outside temperature in summer nights for cooling – Distribution of cool air by ducts of the existing air condition system

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 Overview of results

Energy performance in kWh/m2/year (Calculation results from the Austrian energy certificate) Existing building Renovated building Useful energy demand for heating 144 20 Final energy demand 199 66

CO2- equivalents in kg/m2/year

CO2-equ. District heating 48 9

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 Risks (Source: Risk management in the procurement of innovation, EC, 2010)

Risk = measurable uncertainty of a negative outcome

Risks should be assessed against: • The likelihood • The negative effects once they occur • The benefits associated with the particular procurement

All public procurement actions carry risks

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 Typology of risks

• Technological risks – under-performance or false performance • Organisational and societal risks – e. g. lack of acceptance (within or outside the administration) • Market risks – e. g. markets aren’t built quickly enough; suppliers don’t respond to the tender • Financial risks – e. g. uncertainty in meeting target costs, ability to secure the funds needed • Turbulence risks – associated with large scale-projects, emerging from a range of unforeseen events

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 Basic dimensions of risk management

• Identify and reduce risks (e. g. studies, information, expertise) • Mitigate the potential costs (e. g. alternative scenarios) • Allocate responsibilities (who bears the cost and the reduced benefits)

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011 Benefits and risks in the case of the GAP Solution Façade System in Weiz (Austria)

• Decision to use the Façade System was made by: – Politicians, regional administration and head of the LIG • Benefits: – Reduced energy demand, region as forerunner, visual attraction of the façade • Identification of technological risks (e.g. dynamic u-value): – Certificates, studies by independent organisations, estimation of the architect • Mitigation of costs: – The façade system is used only on 3 sides of the building • Allocation of responsibilities: – Warranty by the supplier: 3 years for defaults and 30 years for hidden defaults

SCI-Network –Webinar_Presentation BH Weiz – 24 March, 2011