Project: Retrofitting BIW working hall in Frankfurt

Task formulation: • Examination of daylight use and thermal room behaviour for a working hall used for educational purposes • Designs with side windows and different shed roofs: • Shed roof with 28°/62° slope • Shed roof with 45° slope Examination: • Investigation of luminance, daylight factors, daylight autonomy under an overcast sky, daypaths of solar radiation for different building variations • Investigation of room temperature, overheating frequency, heat balance, solar entries, heating energy demand, etc. for different building variations Solution: • Evaluation: The 28°/62° shed roof with shaded and downsized side windows is the optimal solution • The 45° shed roof leads to higher overheating rates and hardly increased daylight use, further it does not reduce the heating energy demand • The design recommendations derived from this study provided the basis for lower construction costs and higher energy efficiency by avoiding a cooling system. Project: Refurbishment of the BIW working hall civil underground engineering in Frankfurt (Model project for the refurbishment of teaching centres by the Bundesinstitut Berufliche Bildung and the country Hessen) Architect/General planning: FAAG Technik GmbH, www.faag.de/planung.html Project leader: Architect Werner Füßler Owner: BiW Bildungswerk BAU Hessen-Thüringen e.V., www.Biw-Bau.de (Bildungsdienstleister der Bauwirtschaft, Bildungszentrum Frankfurt, www.biw-bau.de/frankfurt.html) Simulation: Andreas Lahme, ALware, 2007 Consulting for: Werner Füßler, FAAG Technik GmbH, 2007

Project: Sales outlet Deichmann

Task formulation and examination: Feasibility study for daylighting use and thermal indoor climate of a sales outlet without/with skylights: lighting bars, shed roof (sloped) and shed roof (perpendicular) Results/solution: Optimization of daylight use and avoidance of thermal overheating: • The variations ‘lighting bars’ and ‘shed roof (sloped)’ allow the same daylight usage of 63% (artificial lighting dimmed) and 44% (artificial lighting on/off) of the operation time. But they show quality differences, e.g. in equality. • The variations ‘lighting bars’ and ‘shed roof (sloped)’ show different overheating frequencies of the room temperature: Operation time hours above 26°C: ‘lighting bars’ 12,1%; ‘shed roof (sloped) 4,1% Reduction of costs for energy supply of lighting, heating, cooling while providing better comfort and reduction of pollution: ‘without skylights’ 0%; ‘lighting bars’ 76%; ‘shed roof (sloped)’ 70%. Project: Sales outlet Deichmann Owner: Heinrich Deichmann Schuhe GmbH & Co. KG Simulation: A. Lahme, ALware, 2005 Software: 3D Lighting, 3D Thermal Project consulting for: Heinrich Deichmann Schuhe GmbH & Co. KG

Project: New building Dräger Medical in Lübeck

Task formulation: Examinations of the thermal indoor climate to find an energy-saving systems engineering concept Examination: Thermal simulation Examination of the heat input and maximum cooling capacity, investigation of the overheating frequency, investigation of heat input through daylight and artificial lighting, examination of the monthly heat balance Solution: Measures Statements concerning the limited efficiency of the GK cooling ceiling, recommendation of decrease of solarization on the Southern and Western side (reduction of heat loads by increasing the quality of the glass facade and inner discomfort glare protection) and by alternative operating methods (e.g daylight-dependent lighting) Project: New building Dräger Medical Owner: Dräger Medical AG & Co. KG Thermal simulation: A. Lahme, ALware, 2005 Software: 3D Lighting, 3D Thermal Project consulting for: AHS Ingenieurgesellschaft mbH

Project: Retrofitting Rudolf Schwarz Church in Vienna

Task formulation: • Thermal comfort in different usage areas of the church: • Check-up of the hitherto existing heating concept with wall heating and heating strips Examination: CFD simulation • Comparative examination of different heating conceptions to find out the most economic solution: • Analysis of comfort temperatures and air velocities in the sitting areas. Solution: • Evaluation: The hitherto existing climate control concept had to be improved. • The new heating concept with independent control of comfort temperatures in the different sitting areas for the particular usage areas means high savings of costs for investment and operation when applied. Project: Retrofitting Rudolf Schwarz Church in Vienna Simulation: Frauke Gerder, G/7 Ingenieurleistungen, 2006, for ALware Andreas Lahme Software: 3D Airflow Project consulting for: Technisches Büro Käferhaus GmbH, Langenzersdorf (Vienna), 2006