Energy Efficiency

Transformation of ruined Bračak castle into modern energy efficient center

Photo: Energy Center Bračak

Published

August 7, 2017

Country

Comments

0

Share

Published:

August 7, 2017

Country:

Comments:

0

Share

  • Project: Revitalization and transformation of Bračak castle into energy-efficient and sustainable energy center
  • Country: Croatia
  • Financing: Fund for Environmental Protection and Energy Efficiency of Croatia (FZOEU) and EU Structural Funds
  • Implementation: Regional Energy Agency Northwestern Croatia (REGEA) and Krapinsko-zagorska županija
  • Implementation period: preparations and implementation of project 6 years, reconstruction 1.4 years

Context

The Bračak castle lies in the Krapinsko-zagorska županija (district), in northwester Croatia. It was built in 1889. Following World War 2, a children’s hospital for lung diseases was housed in it. The castle was abandoned in 2007 when a new hospital was built nearby. It is a listed property protected as part of the country’s cultural heritage.

REGEA started preparations in 2011 for the reconstruction project with the Krapinsko-zagorska županija preparing the paperwork for the reconstruction of the property and its transformation into an energy center in 2012. Work on the restoration and revitalization of the Bračak castle started in 2015.

The Energy Center Bračak was opened on March 17, 2017.

The total value of the project stands at EUR 3.2 million, with EUR 2.8 million coming from the FZOEU under a decision by the Croatian government while EUR 400.000 came from EU funds and the Krapinsko-zagorska županija budget.

 Technical requirements

Heating insulation 20 to 30 centimeters thick made from stone wool was put up on the inner sides of the outer walls during the energy renewal following reconstruction. Insulation of 30 centimeters was put up in the attic. Insulation made of polystyrene (XPS) was laid on the floors in the cellars at a thickness of 12 centimeters as well as on the ground level walls.


Photo 1: Bračak castle prior to the reconstruction

The project included installation of:

  • energy efficient outer windows and doors
  • 80 kW heating boiler
  • high-efficiency VRV cooling system of an installed power of 95.2 kW
  • high-efficiency ventilation system with recuperation
  • gas-powered micro-cogeneration system producing 6 kW of electric power and 14.9 kW of heating power to heat water.

A central monitoring and management system was installed for the heating, cooling and ventilation system (HVAC) and lighting. Half the lighting are LED lights and half are fluo T5.

The center also has a medium speed charger for two electric cars of a power of 2×22 kW and rain water collector used to wash out the sewage.

Specific requirements

The latest technical solutions were used when restoring the building but bearing in mind that the cultural heritage aspect had to be preserved.

Photo 2: Reconstruction works on Bračak castle

In order to preserve the outer appearance of the building, the insulation of the outside walls was put on the inner walls with an active steam barrier which allows the walls to dry from the inside.

The restoration of the castle included a full reconstruction of the facade, the murals and architectural ornaments.

Energy savings and other benefits

The Bračak castle went from an E class energy grade prior to reconstruction to a B and C with annual savings of 70 percent of heating energy after reconstruction. The center secures 88 percent of its own energy from renewable sources and has reduced emission of CO2 by 50.4 tons.

Photo 3: Bračak castle as a modern energy center 

The center is home to the REGEA head office and an education center. An entrepreneur incubator for start-ups which are active in renewables development and energy efficiency also has a place in the castle.

The implementation of this project has created a framework for similar projects and investments in Croatia, Southeastern Europe and the European Union.

Comments (0)

Be the first one to comment on this article.

Enter Your Comment
Please wait... Please fill in the required fields. There seems to be an error, please refresh the page and try again. Your comment has been sent.

Related Articles

energy-intensive-industries-serbia-CBAM

Serbia’s energy-intensive industries brace for CBAM, seek state support to apply decarbonization solutions

22 May 2024 - Companies in Serbia are not afraid of decarbonization and CBAM, but are worried the state does not recognize what needs to be done to help the affected industries

serbia heating plants biomass eu kfw djedovic miscevic vucevic konrad

Five Serbian heating plants to be converted from coal, oil to biomass

17 May 2024 - Serbia will build heating plants in Niš, Bajina Bašta, Prijepolje, Rača and Novi Pazar to replace fuel oil and coal in district heating systems

succesful-first-part-of-energy-transition-balkans

Successful first phase of energy transition in Balkans, especially Serbia

13 May 2024 - The first phase of the transition to renewable energy sources in the Western Balkans has been successful, particularly in Serbia, according to Belgrade Energy Forum 2024, organized by Balkan Green Energy News

Communities leading the Western Balkans' clean heating transition Nataša Kovačević

Communities leading the Western Balkans’ clean heating transition

08 May 2024 - Powering district heating networks with geothermal energy, solar thermal, or other renewable energy sources can help make large-scale heating systems efficient, cost-effective, and flexible, especially when rolled out in tandem with small-scale systems