Bau Sim 2010 Vienna University of Technology Sept

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 Generic Model for Energy Assessment of a Detached Family House Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 PRESENTATION: Describes a generic model for assessment of the future energy efficiency of detached low-energy houses and a case study on optimization of thermal insulation thickness in relation to the mean U-Value and expected heating demand GENERIC MODELS: - Shorten distance between architects and software by allowing for selected free design parameters, whereas the parameters related to the in -depth-knowledge are pre-defined - Enable to perform correct building performance simulations as the generic models are based on existing scientifically proven software. - Help to improve thermal knowledge and experience of the user - Make possible a quick performing of a high number of calculations with automatic change of the selected parameters and this way investigate their mutual relationship Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 GENERIC MODEL – PRINCIPLE: Call pre-made Capsol based generic model (Read Capsol Data) Define or select calculation parameters Run Capsol (-saves new capsol file -runs the calculation -reads the results) Display results Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 GENERIC MODEL: Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 GENERIC MODEL: Generic model CAPSOL Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 CASE STUDY: Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 Clay tiles ( = 0. 85 W/(m. K)) – 0. 02 m Air gap (R = 0. 17 m 2 K/W) - 0. 06 m Glasswool ( = 0. 04 W/(m. K) – 0. 22, 0. 25, 0. 275, 0. 30 m Flooring ( = 0. 14 W/(m. K) - 0. 02 m CASE STUDY: (Brick house) (Lightweight house) Dense plaster ( = 0. 5 W/(m. K)) - 0. 01 m Insulation brick ( = 0. 27 W/(m. K)) - 0. 30 m Glasswool ( = 0. 04 W/(m. K) - 0. 10, 0. 15, 0. 20, 0. 25, 0. 30 m Perlite plaster ( = 0. 08 W/(m. K) - 0. 15 m Gypsum board ( = 0. 19 W/(m. K)) – 0. 0125 m Glasswool ( = 0. 04 W/(m. K)) - 0. 14, 0. 19, 0. 24, 0. 28, 0. 33 m Air gap (R = 0. 17 m 2 K/W) - 0. 03 m Weatherboard ( = 0. 14 W/(m. K) - 0. 02 m Asphalt ( = 1. 20 W/(m. K)) – 0. 018 m Glasswool ( = 0. 04 W/(m. K)) – 0. 02, 0. 05 m Heavy mix concrete ( = 1. 40 W/(m. K) – 0. 12 m Gravel ( = 0. 36 W/(m. K) – 0. 05 m Common earth ( = 1. 28 W/(m. K)) – 0, 5 m „REAL CONSTRUCTION“ „BUILDING-PHYSICAL ABSTRACTION“ Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 CASE STUDY - THE BUILDING-PHYSICAL MODEL: 2 zone model = ground floor + attics the whole house volume (BRI): 406 m³ total area of the envelope: 339. 9 m² whereas: - opaque area: 314. 30 m² - transparent area: 25. 60 m² ground plate area: 80. 0 m² total floor area (BGF): 140. 0 m² open plan living area: 122. 70 m² BOUNDARY CONDITIONS: Bratislava climate Heating power of 4000 W No cooling Required ventilation of 0. 5 Vol/h No movable shading No sun obstacles Occupancy [W] Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 CASE STUDY: The simulated variations of the building envelope: Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 THE EFFECT OF THE MEAN U-VALUE IMPROVEMENT IN DEPENDENCE ON HEAT INSULATION THICKNESS UPON THE HEAT ENERGY DEMAND REDUCTION: Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 CONCLUSIONS: The generic models can be developed for any building type and in dependence on their purpose more or less detailed. Their application can reach from the early design stage up to the issue of building energy passports. Always when high numbers of calculations with changing parameters are required the use of generic models can be of advantage, e. g. when assessing various refurbishment options of the same building type like the East European panel buildings. The generic models give the users high certainty that the achieved results are building physically correct and can also contribute to the improvement of their thermal knowledge and experience. Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia

Bau. Sim 2010 Vienna University of Technology Sept. 22 - 24, 2010 Thank you for your attention! Danke für Ihre Aufmerksamkeit! Roman Rabenseifer Faculty of Civil Engineering Slovak University of Technology Radlinského 11, 81368 Bratislava, Slovakia