Experiences in Cologne: Energy-efficient refurbishment in residential buildings

16 pages
9 views

Please download to get full document.

View again

of 16
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Share
Description
1. WP2 Meeting I 19/01/18 I page 1www.grow-smarter.eu WP2 Meeting I 19/01/18 I page 1www.grow-smarter.eu THE GROWSMARTER PROJECT 2015-2019 WP2 Webinar Low Energy…
Transcript
  • 1. WP2 Meeting I 19/01/18 I page 1www.grow-smarter.eu WP2 Meeting I 19/01/18 I page 1www.grow-smarter.eu THE GROWSMARTER PROJECT 2015-2019 WP2 Webinar Low Energy Districts Christian Remacly, RheinEnergie AG André Esser, DEWOG
  • 2. WP2 Meeting I 19/01/18 I page 2www.grow-smarter.eu 1. Applied Measures 2. Barriers/ challenges during implementation (and accomplishment of barriers/ challenges) 3. Business models 4. Evaluation strategy AGENDA Practical approaches - how to overcome technological and social barriers on smart refurbishment
  • 3. WP2 Meeting I 19/01/18 I page 3www.grow-smarter.eu Applied Measures • insulating the building envelope • basement ceilings and roofs • introducing the triple glazed windows in some buildings. • Efficient LED stairway lighting in all renovated buildings • energy efficient elevators
  • 4. WP2 Meeting I 19/01/18 I page 4www.grow-smarter.eu Additionally insulation to 16cm Building with new insulation Already existing insulation of 6cm Preparation of elevator shaft Applied Measures insulation of the buildings
  • 5. WP2 Meeting I 19/01/18 I page 5www.grow-smarter.eu • The refurbishment of the first construction phase is completed by DEWOG. • The second construction phase is in progress. • The conduction work (district heating, electricity and water) is finished. Applied Measures
  • 6. WP2 Meeting I 19/01/18 I page 6www.grow-smarter.eu Renovated building with new balconies as well as elevator with energy recovery The houses were artistically designed by an artist from DEWOG Applied Measures
  • 7. WP2 Meeting I 19/01/18 I page 7www.grow-smarter.eu Barriers/ challenges during implementation • Unforeseen difficulties in civil engineering work. • This lead to, among other things, to delays in the installation of the heat pumps. • Work on the site has nevertheless continued steadily.
  • 8. WP2 Meeting I 19/01/18 I page 8www.grow-smarter.eu Barriers/ challenges during implementation • Unforeseen difficulties working the soil (i.e. bomb findings from WWII). • Long permit process • Mitigating measure: RheinEnergie supplied heating containers during the first phase of construction by the Dewog. • Problems with the concept of thermal contracting. • DEWOG was not allowed to buy the air / heat pumps on its own and in cooperation with the RheinEnergie. • Brought the air / heat pumps via RheinEnergie and thus had to transfer the EU budget.
  • 9. WP2 Meeting I 19/01/18 I page 9www.grow-smarter.eu Barriers/ challenges during implementation • Major challenge: renovation of the buildings while the tenants still live in the settlement • We try as thoughtfully as possible to carry out the refurbishment. • Over the Christmas season there has been a construction stop for the tenants • The rise in rent in our project area is limited due to a local legislation*. • Therefore, the rent increase will be at a limit of 9,97 Euro per m². * In order for rents not to rise excessively (social tolerance), Germany has a system called “Mietpreisbremse”, meaning “putting a break on rental prices”
  • 10. WP2 Meeting I 19/01/18 I page 10www.grow-smarter.eu Business model – Stegerwaldsiedlung Smart Solution 1: Efficient and Smart Climate Shell Refurbishment Key Partners Industrial partners: Dewog Technical partner: RheinEnergie private sector and building owners; public authorities to incentivize collaboration. Cologne: DEWOG, providing the buildings and RheinEnergie providing the technology Key Activities change to a centralised heating system in the buildings Value Propositions refurbishment of the buildings, to reduce energy consumption Customer Relationships Owners` communities or companies Customer Segments Private sector: Housing buildings Corporate buildings Malls and stores Public administration: Internal use: Public buildings (City Councils buildings, public libraries, hospitals, etc.) External use: public housing Key Resources Construction materials; financial resources, human resources, technology Channels The solution is offered by real estate companies (in new developments) or architects and construction companies (in brownfield projects) as an added value to final customers (either households or companies) to reduce their energy bills, improve service, increase wellbeing or adopt an environmentally friendly approach in the energy use. Cost Structure Hardware related costs: façade, roof and ceiling insulation products, triple glazed windows, high efficiency circulation pumps, lifts with energy recovery, LED lamps Revenue Streams Modernize the infrastructure implies a reduction in energy costs, generating savings.
  • 11. WP2 Meeting I 19/01/18 I page 11www.grow-smarter.eu Baseline Methodology of evaluation Parameters to be monitored KPIs Baseline for Heating, Cooling and Electric energy; annual energy demand (kWh/m2) corrected for ambient conditions Heating-, Cooling- and Electric energy demand will be measured every hour over one year (12 consecutive months) and the climate corrected annual energy demand after implementation of measures will be compared to the baseline. heating [kWh/m²/a] electricity in total [kWh/m²/a] Heat energy required (kWh) per year and month normalized for climatic conditions. Cooling energy required (kWh) per year and month normalized for climatic conditions. Electric energy required (kWh) per year and month. bought energy mix (per energy carrier) -Nuclear power -Coal -Natural gas -Other -Renewable energies Emission data CO2-emission [kg/kWh] nuclear waste [g/kWh] CO2 emissions due to heating energy demand (kt/year). CO2 emissions due to cooling energy demand (kt/year). CO2 emissions due to electric energy demand (kt/year). Evaluation strategy - Stegerwaldsiedlung Smart Solution 1.0 Evaluation of building energy use
  • 12. WP2 Meeting I 19/01/18 I page 12www.grow-smarter.eu Baseline Methodology of evaluation Parameters to be monitored KPIs We are only able to raise a baseline for the 3rd construction phase Instantaneous measurement of air leakage with blower door Air leakage in air changes per hour at 50 Pa (ACH50) Thermal imaging Comparison new/old We are going to do a Thermal bridge proof Thermal imaging 4 (for each type one measurement) We are going to do a thermal imaging of the building Evaluation strategy - Stegerwaldsiedlung Smart Solution 1.0 Evaluation of building energy use
  • 13. WP2 Meeting I 19/01/18 I page 13www.grow-smarter.eu Evaluation strategy - Stegerwaldsiedlung Smart Solution 1.1 Low U-values of windows Baseline Methodology of evaluation Number of measurements KPIs Comments We are only able to raise a baseline for the 3rd construction phase Thermal status (U- value) determination of windows (e.g. by measurement) Solar gain coefficient (%) (manufacturer specification) is determined from the window data, no measurement, proof by the window builder Thermal status measurement of randomly selected windows in each of the reference buildings 5
  • 14. WP2 Meeting I 19/01/18 I page 14www.grow-smarter.eu Evaluation strategy - Stegerwaldsiedlung Smart Solution 1.1.9 efficient lighting Baseline Methodology of evaluation Parameters to be monitored KPIs Measure property electricity consumption (kWh/m²) for a year. Measure property electricity consumption (kWh/m²) for a year. Lighting intensity (lx) Lighting intensity, illuminance (lx). we will measure the actual outcome for one typical installation Lighting intensity, illuminance (lx). Annual electric energy use (kWh/m2). Reduction of electrical consumption related to baseline.
  • 15. WP2 Meeting I 19/01/18 I page 15www.grow-smarter.eu Get the latest updates by signing up online! This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no 646456. The sole responsibility for the content of this presentation lies with the GrowSmarter project and in no way reflects the views of the European Union. QUESTIONS? THANKS FOR YOUR ATTENTION! RheinEnergie AG Deutsche Wohnungsgesellschaft mbH Parkgürtel 24 Mevissenstraße 14 D-50823 Köln 50668 Köln Corporate Development Fixed assets c.remacly@rheinenergie.com a.esser@dewog.de Christian Remacly André Esser
  • 16. WP2 Meeting I 19/01/18 I page 16www.grow-smarter.eu
  • Related Search
    We Need Your Support
    Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

    Thanks to everyone for your continued support.

    No, Thanks