Project presentation

Dubbelbeek ‘Electric cars’

Group: 6

Timo van BeekBram van Dam Jeroen van Hellenberg Hubar (Project Manager) Jeroen Janssen Mark OverdijkJorik van de Waerdt

Contents

• Introduction of the Dubbelbeek Project• Recap interim presentation• Demands• Trias Energetica• Electric cars• Concept• Financial feasibility• Conclusion• Discussion

PAGE 213-04-2023

Introduction of the Dubbelbeek project

• Accommodation for employees police / hospital

with public restaurant and conference centre

• Situated in Apeldoorn

• Five floors

• 53 x 51 x 14m.

• 212 ‘Inhabitants’

PAGE 313-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Introduction of the Dubbelbeek project

• Research question:

• Project boundaries:− Social payback time of 15 years− Building has to be zero energy on annual basis− The building does not have to operate autonomously− The existing building concept has to be used− The electricity used for the cars is not part of the zero energy balance

PAGE 413-04-2023

“How to make the building Dubbelbeek annually energy neutral with integration of the possibility to charge 100 electric cars?”

Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Recap on intermediate presentation

• Intermediate presentation 11-03-2010• Finished

− Literature study− Demands − Design

• Need to be done− Technical and financial feasibility− Optimization− Report

PAGE 513-04-2023Introduction – Recap intermediate presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Demands

Heating demand

PAGE 613-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Demands

Cooling demand

PAGE 713-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Demands

Electricity demand

Based on degree of occupation

- Lighting- Electrical appliances

Total annual demand 522 MWh/year

Peak electricity demand 130 kW

PAGE 813-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Demands

Water demand- Shower

- 40 % simultaneousness- 10 minute showers- 4 L/min hot water (50 °C) + 2 L/min cold water (13 °C)

- Restaurant kitchen- Fitness room

Daily hot water consumption: 15.470 Liters

Peak hot water consumption: 12,4 L/s

PAGE 913-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

1. Saving energy

Passive adjustments:

• Rc-value change• Solar gain factor• Shadow factor• Heat recovery

• Ventilation air• Shower heat recovery

• Using LED’s

Trias Energetica

PAGE 1013-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Trias Energetica

2. Renewable Energy

• Wind energy• Small scale (to low yield vs. cost, required area, wind speed)• Large scale (to low wind speed on the site)

• Solar energy• Photovoltaic (applied at the parking lot)• PV-twins (applied on the roof)

• Hydropower (not viable option near the location)

• Geothermal (ground is possible for geothermal)

PAGE 1113-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Trias Energetica

3. Active systems

• Heat pump with Aquifer Thermal energy storage (ATES)

• Combined heat and Power (CHP)• With wood pellets

PAGE 1213-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

PAGE 1313-04-2023

- Reduce energy demand

Grid

Aquifer

Heat pump

PV Thermal

charging cars

CHPBio

‘Green energy’

Extra solar

Trias Energetica

Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Electric cars

• Car type• Nissan LEAF

− Range: 160 km− Power: 80 kW

• Charging• 20 electric cars charged within 1h• Total current 450 A• Checked with Kabel++ and NEN-1010:2009

PAGE 1413-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Concept

PAGE 1513-04-2023

Space heating (peak load)• 80% Aquifer Thermal Energy Storage system• 20% Combined Heat and Power

Space cooling (peak load)• Direct cooling out of the aquifer

Hot tap water demand• < 40oC Aquifer Thermal Energy Storage• < 65oC PV-twins• Extra Combined Heat and Power

ATES system designed at cooling load. The extra heat is in the philosophy of integration sold at the nearby swimmingpool (aprox. 150m)

Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Concept

PAGE 1613-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Concept

• Electric concept

• Situation 2 better: 6% less losses• 2 simulations in Vision made:

• No PV gains January• max PV gains June

PAGE 1713-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Financial Feasibility

• Subsidies (SDE, MIA, EIA, etc.)• Payback time – Within 15 years

PAGE 1813-04-2023

14.8

17.3

8.2

11.9 12.0

1.6

4.8

Payback periods of systems

PV parking

PVTwins

CHP

ATES

Shower recovery

LED lighting

Electrical charging points

Total payback period

System

Yea

rs

11,9 years

Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Conclusion

• 100 % energy neutrality is not met• 89 % without wood pellet CHP• 93 % with wood pellet CHP• 100% with imported ‘green electricity’

• Social payback period of 15 years is feasible

• Passive solutions lead to a significant demand reduction of 51 %

• Balancing the ATES system: Look to district level

• Implementing electric charging points requires smart design: • Extra transformer, placement of the PV-panels

PAGE 1913-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Discussion

- Orientation and location were pre-determined, as well as the shape of the building

- Hardly any accurate information of the building available

- Integrated design is somewhat simplified to calculate the annual energy balance

- Technical and economical feasibility of the construction with the aqua centre has to be investigated in more detail

- Financial analysis based on well-substantiated estimations:- Lack of information (no offers from companies)- Influence of several subsidies hard to identify- Focus on applied systems

PAGE 2013-04-2023Introduction – Recap interim presentation – Demands – Trias Energetica – Electric cars – Concept – Financial feasibiliy – Conclusion - Discussion

Questions?

PAGE 2113-04-2023