rehabilitation concept

Transcription

1 rehabilitation concept decision template for the rehabilitation of the existing building XY place, date 1/26

2 GBG Gebäude- und Baumanagement Graz GmbH editor contact data

3 Table of contents table of contents 1 summary introduction, tasks and definition of objectives technical description building envelope windows exterior wall roof/top floor ceiling basement ceiling/components with ground contact building services, electrical engineering heat supply heating and hot water lighting energy demand energy certificate actual energy consumption saving measures, saving potential building envelope measures energy saving potential Building services measures Heating and hot water lighting saving potential heating lighting economic efficiency investment potential of energysaving measures possible models implementation modell single handedly implementation modell contracting list of illustrations list of tables /26

4 summary 1 Summary brief description of contents 4/26

5 Rehabilitation concept Introduction, tasks and definition of objectives 2 introduction, tasks and definition of objectives description of framework conditions and initial situation 5/26

6 Technical description 3 technical description 3.1 buidling envelope technical description of building envelope (structures, specialties) windows figure 1: windows 6/26

7 Technical description figure 2: historical significant construction stock Abc. (description, energetic evalution) evaluation Abc (technical evaluation like condition, energetic assessment) exterior wall stock Abc. (description stock, energetic assessment) 7/26

8 Technical description figure 3: damaged plaster evaluation Abc (technical evaluation like condition, energetic assessment) 8/26

9 Technical description figure 4 energy flow chart description energy flow... figure 5: loss of heat roof/top floor ceiling stock 9/26

10 Technical description Abc (technical evaluation like condition, energetic assessment) figure 6: top floor ceiling evaluation Abc (technical evaluation like condition, energetic assessment) basement ceiling/components with ground contact stock Abc. (descritpion, energetic evaluation) evaluation Abc (technical evaluation like condition, energetic assessment). building services, electrical engineering stock 10/26

11 Technical description - Wärmebereitstellung Heizung und Warmwasser - Beleuchtung Heat supply heating and hot water stock Abc. (description stock, energetic evaluation) figure 7: heating and regulation figure 8: condensate 11/26

12 Technical description figure 9: covered radiators figure 10: several radiators evaluation Abc (technical evaluation like condition, energetic assessment) 12/26

13 Technical description lighting stock Abc. (description stock, energetic evaluation) figure 11: luminaria stock evaluation Abc (technical evaluation like condition, energetic assessment) 13/26

14 XY Energy demand 4 energy demand 4.1 energy certificate arithmetical heating demand 172 kwh/m²a fifure 12: energy index Schönbrunngasse actual energy consumption 14/26

15 XY Energy demand climatically adjusted, heating degree days 20/12 heating consumption adjusted 3400 Kd [MWh] 600,0 500,0 464,7 400,0 506,9 516,6 483,6 475,5 505,4 300,0 200,0 Heating consumption adjusted 3400 Kd 100,0 0, figure 13: actual consumption Schönbrunngasse 30 15/26

16 Saving measures, saving potential 5 saving measures, saving potential figure 14: energy index after rehabilitation 5.1 building envelope measures baseline scenario standard renovation according to legal requirements 16/26

17 Saving measures, saving potential windows: basement floor: facade: roof: scenario energy efficient rehabilitation windows: basement floor: facade: roof: figure 15: insulation façade north 17/26

18 Saving measures, saving potential saving potentials representation of saving potentials table 1: rehabilitation options HWB climate site Heating load improvement stock 172 kwh/m 2 /a 205 kw - Basement scenario 98 kwh/m 2 /a 130 kw 43% scenario energy efficient rehabilitation 25 kwh/m 2 /a 33 kw 85% table 2: rehabilitation options attic floor HWB climate site Efficiency class option A 46 kwh/m 2 /a B option B 30 kwh/m 2 /a B option C 24 kwh/m 2 /a A option D 9 kwh/m 2 /a A++ (passive house) 18/26

19 Saving measures, saving potential 5.2 building services measures heating and hot water description of measures figure 16: solar land registry lighting measures... 19/26

20 Saving measures, saving potential saving potentials heating table 3: payback period rehablitation measures building services Efficiency measures Payback period: < 5 a 5 15 a > 15 a notes lighting table 4: payback period rehabilitation measures electricity Efficiency measures Payback period: < 5 a 5 15 a > 15 a notes 20/26

21 Economic efficiency 6 economic efficiency 6.1 investment potential of energysaving measures /a Development of energy costs without implementation of energy saving measures Strom Erdgas 0 figure 17: development of energy costs without implementation of energy saving measures (annual price increase 3%) 21/26

22 Economic efficiency accumulated savings power accumulated saving potential max-, min- and average values (depending on energy source) gas average value accumulated savings accumulated values min. accumulated values max figure18: accumulated saving potential district heating and power 30 years explanation: 22/26

23 Economic efficiency development of energy costs, saving potentials and cash valuese (cash values according to investment potential ) energy costs /a cash value of savings accumulated Accumulated savings min. savings max. energy costs Energy savings incl.savings max. incl. savings min energy costs without measures Umsetzungzeitraum der Maßnahmen min. max. cash value figure 19: energy costs, saving potential and cash value for district heating, power and water 23/26

24 Possible modells 7 possible models 7.1 implementation modell single handedly 7.2 implementation modell Contracting 24/26

25 List of illustrations list of illustrations 25/26

26 List of tables list of tables 26/26