PBW engineering office Wahlbuhl and Günther Ingenieure

Transcription

1 PBW engineering office Wahlbuhl and Günther Ingenieure planning, consulting, profitability Energy Efficiency - Renewable Energy Thomas Wahlbuhl Portland; April 27, 2015 PBW- Planungsbüro Wahlbuhl / Günther Ingenieure Naumburg / Dresden (Germany) and

2 excellent applications of renewable energies (RE) and energy efficiency Experience in the field of RE Similar climatic and geothermal conditions for RE transnational solution approaches common projects Interest in the beautiful country and culture of the USA use expert-knowledge for fruitful projects 2

3 together: 22 colleagues and 3 freelancers Cooperation with other offices in Dresden, Jena and Weimar Main focus: Medium and large-sized innovative projects with a high proportion of renewable energy technology (schools, research buildings, living houses, Kindergarten, hospitals, laboratorys, Administration and industrial buildings) Energy design for buildings: Project management, planning and construction management for technical equipment: heating, cooling, air condition, sanitary equipment, building automation We offer solutions for the application of Renewable Energies 3

4 Energy Consulting - Development of energy concepts for buildings, hotels, properties, holiday settlements - Economic feasibility studies and comparison of alternatives - Development of energy concepts for Municipal clima protection concepts and Quarter Energy Concepts - energy consulting for architects and building owners, energy certificates for buildings 4

5 - cooperation by projects, conventional and by research projects in the field of renewable energies, heat pumps, power-heatcombination, solar cooling and energy efficiency - partner agency - joint venture - exchange of ideas and experiences Source: Friedensreich Hundertwasser, Green Town 5

6 Beginning of the project Energy costs for gas, electricity and other energy sources Consumption for heating, cooling and electricity solar usable area Requirements for the use usable area of the substrate Range of options: technically meaningful variants Economic feasibility studies (Cost of capital + Consumption cost + Costs for maintenance, repair and operation = Total Coast) 6

7 PBW Engineering Office Wahlbuhl Building Service Engineering. Renewable energies. Energy Consulting Why more energy efficiency? - energy shortage and raising prices - due to increased emissions of CO2 and greenhouse gases climate change - global increase of energy consumtion by appr % until over a half of the world population enters just now into the energy market - Aim of EU: Decrease of the greenhouse-emissions by 80-95% until 2050 CO 2 CO 2 CO 2 CO 2 CO 2 CO 2 O 2 7

8 PBW Engineering Office Wahlbuhl Building Service Engineering. Renewable energies. Energy Consulting Old Buildings Possibilities for energetic redevelopment: Architectural - thermal insulation (outside or inside, roof, cellar,..) - Windows with better insulation - intelligent solar protection - Building materials with storage capacity Technical - Modern heating system (Heat pump, power-heat coupling, Solar-Plants, better regulation) - Modern cooling systems (Solar cooling, cooling with earth-source, adiabatic cooling) - Low temperatur heating and cooling - Decentralised electricity generation (photovoltaics, small wind turbines, power-heat coupling) - Energy-saving electrical equipment and illumination Building in the historical downtown of Erfurt Villa in Naumburg 8

9 PBW Engineering Office Wahlbuhl Building Service Engineering. Renewable energies. Energy Consulting Current Examples Buildings with energy-consumtion-reduction after energetic reconstruction Primary School in Saubach: energy Reduction: 60% (building 32 years old) new heating, insulation outside, new windows, ventilation system with heat recovery, efficient lighting Architecture- and Environment House Naumburg: energy Reduction: 45% (building 250 years old) new heating with heat pump, insulation inside, new windows, ventilation system with heat recovery, efficient lighting 9

10 Options Energy reduction: 45% (building 250 years old) Insulation, new windows Heating and cooling with heat pump and 5 geothermal probes 145 m Heating power: Heat consumption: Cooling power: Cooling consumption: 42 kw 75 MWh per year 20 kw 16 MWh per year Ventilation system with heat recovery, use of waste heat in the glass façade for ventilation in the heating period 10

11 Measures of efficiency (building 35 years old) Insulation of the roof Energy reduction electricity by utility company: 70% through selfgeneration with photovoltaic, electric storage and power-heat combination with Stirling-motor 11

12 Himmelsscheibe von Nebra (Sky Disk of Nebra) Heating and Cooling with reversible heat pump and cooling machine and 11 geothermal probes, Air condition with adiabatic cooling conditions: Heating power: Heat consumption: Cooling power: Cooling consumption: Full-load hours heating: Full-load hours cooling: 55 kw 88 MWh per year 25 kw 20 MWh per year h/a 800 h/a 12

13 - better regeneration of the soil - higher power- and performance factors - higher profitability by heating and cooling mode 13

14 Zero Energy Kindergarten in Güsten Energy standard: passive-house Roof surfaces as energy producer for: - solar thermal - photovoltaic Heat generation: Heat storage: Electricity storage: Thermal solar collectors Heat pump Ground under the base plate Electric batteries Building envelope as power plant 14

15 Summer operation 15

16 Winter operation 16

17 Expected results: - appr. 30% direct cover with solar thermal for hot water and heating - appr. 70% indirect cover with heat pump and ground storage - COP Heat pump: 5 - Cooling: with photovoltaic - overall: appr. 85% environmental energy appr. 15% auxiliary power (partially with photovoltaic) 17

18 Administration, Workshop, Store Use of several renewable energy sources - heating with thermal solar energy, air (heat pump) and wood chips (use of wood waste) - ice storage for heat storage and cooling use phase-change ice-water - photovoltaic-moduls for electricity - low-temperature heating and cooling distribution 18

19 Local heating- and cooling supply system - 6 low-energy blocks of flates (24 flates) - 6 geothermal probes and heat pump and heating boiler - COP heat pump: 4 - Cooling: with geothermal probes (over ventilation) 19

20 Solar thermal and photovoltaic Combination Heat pumps and geothermal probes Combination Power-Heat-Coupling for the heating, hot water, solar cooling and pool heating Self-power-generation for the heating, hot water, pool heating and natural cooling for self-power-generation of buildings and vehicles and for heating and hot water my building is my filling station Building envelope as power plant 20

21 Thank you for your attention PBW engineering office Wahlbuhl and GÜNTHER INGENIEURE Thomas Wahlbuhl Corporation of consulting engineers, Jakobsring 3 Technical Design & Energy engineering Naumburg / Germany Enderstraße 94 phone: Dresden / Germany cellphone: phone: th.wahlbuhl@pbw-nb.de guenther@g-ingenieure.de Web: web: Energy Efficiency - Renewable Energy 21