Smart building as a power plant energyplus house with energy charge management

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1 Institut für Gebäude- und Solartechnik Prof. Dr.-Ing. M. Norbert Fisch Mühlenpfordtstraße 23 D Braunschweig Smart building as a power plant energyplus house with energy charge management Dipl.-Ing. Franziska Bockelmann EuroSun 2014 International Conference on Solar Energy an Buildings, September 2014, Aix-les-Bain, France

2 Research and development project Operating strategies for energy plus buildings on the example of Berghalde operating time (follow-up project) : 08/ /2015 funding agency: formerly 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 2

3 Characteristics of the energyplus standard Balance limit Requirements heating / cooling domestic hot water ventilation auxiliary energy lighting appliance renewable energy FED PED e-mobility < 0 < 0 FED: Final energy demand PED: Primary energy demand Annual balance of primary energy and final energy 0 Direct self energy use > 30 % 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 3

4 Goals Future energy-efficient Living comfort Eco-friendly mobility Combine energetic goals with architecture Interfaces between building and power grid 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 4

5 Architectur single family house (4 Persons) near Stuttgart build m² floor area high energy efficiency - orientation - shape of building - high quality air-tight envelope 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 5

6 Energy concept 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 6

7 monitoring results three years of operation ( ) 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 7

8 Optimization increase of self - supply Operation of all electricity-intensive appliances and units (heat pump) at the time when power output from the PV is available Use of all available thermal storage (floor heating and buffer) Targeted operation of the heat pump Implementing enhanced control strategies to increase the running time of the heat pump. Increasing the temperature in the buffer increase the storage capacity Increase the reference value of surface and supply temperature of the floor heating increase the operation time of the heat pump User comfort is not be limited by the proposed measures! 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 8

9 Annual balance of total electricity energy quantity [kwh/a] surplus kwh surplus kwh surplus kwh 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 9

10 Annual thermal energy balance 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 10

11 Annual electrical energy consumption power consumption [kwh/a] 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 11

12 Solar fraction on heat pump demand power consumption and production [kwh/month] solar fraction on heat pump demand [%] 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 12

13 fraction on energy consumption [%] without battery Fraction of PV, battery and grid with both battery ( kwh) with one battery (7 kwh) total power consumption [kwh] 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 13

14 Outlook and conclusion Implementing of new measures: OUTLOOK Increasing of thermal storage mass (825 l to 825 l l) Active function description and optimized control strategies Comfort measurements: adjust the installed ventilation equipment and the userspecific heating CONCLUSION Energyplus building and high PV-power self-supply is one of the answers to the challenges of our future energy supply The project is a role model example of integral planning and allows researching future orientated technology and energy strategies today. The high rate of PV-self-supply makes this building a trendsetting pilot project 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 14

15 Lay out relevant planning aspects of architecture, energy, user comfort and building facilities for the Energy-PLUS standard in a holistic approach. Shows models of implemented systems for residential and commercial buildings and urban neighborhoods. Reveals the potential for global application to serve humanity at large. Available in German and English. 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 15

16 Thank you for your attention 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 16

17 Operation of heat pump 2012 Operation of heat pump Overheating mode No operation heat pump replaced time day 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 17

18 Influence of battery power [kwh/a] 18. September 2014 Dipl. Ing. F. Bockelmann Smart building as a power plant energyplus house with energy charge management Seite 18

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