Energy Efficiency in the Slovakian Building Sector, continued cooperation with

Norway?

Slovak University of Technology

Faculty of Civil Engineering in Bratislava

Prof. Ing. Dusan PETRAS, PhD.

Introduction of Norwegian methods and tools University education programmes Training of energy auditors Information dissemination; conferences and seminars, articles,

textbooks Pilot projects ………

Cooperation STU - Norway (ENSI) since 1992

A very strong and active Energy Efficiency Team at the University

A very strong and active Energy Efficiency Team at the University

Norwegian methods and tools, introducing: systematic approach for project development

Detailed Auditingwith guarantee

Simplified Auditing

Operation

Implementation

Scanning

ProjectIdentification

ENCON Potential

Profit

Business Planning

Norwegian methods and tools, introducing: Multidisciplinary Energy Auditing

Operation /user pattern

Fans and pumps

Buildingenvelope

HVACsystems

Building automation

Lighting andequipment

Domestichot water

Norwegian methods and tools, introducing: Energy budgeting, kWh/m2 year

Norwegian methods and tools, introducing: Software for energy calculations

Energy consumption[kWh/m² week]

Mean outdoortemperature [°C]

15

10

5

20100-10-20

Unique ET-curve for each buildingUnique ET-curve for each building

Norwegian methods and tools, introducing: Energy monitoring by the ET-curve approach

The NAFTA VVA buildingThe NAFTA AB Malacky building

Early Energy Auditing of Slovakian buildings

Publishing of first Textbook “Energy Auditing of Buildings”, Bratislava (1996)

Further cooperation and “Training of trainers”, Oslo

Second Textbook, “Energy Auditing of Buildings” (2003)

Until year 2007 were built 20 000 dwelling houses

The number of flats in those dwelling houses is 850 000

50% of citizens in Slovakia live in dwelling houses

The rest of people live in single family houses

Active approach by saving energy:

Slovakia is importing 90% of their energy (10% - coal)

Protecting the environment

Citizens vs. Economy influence

Reducing the energy consumption in buildings - top priority in Slovakia

Situation in Slovakia

Faculty of Civil

Engineering

First Building Society

Savings Bank

Program EAS v1.0

Energy Audit of Buildings

Quantifies the most

effective energy

measures in Buildings

New tool developed, based on introduced Norwegian methods and tools

Calculations of:

Energy savings

Investments

Profitability

Calculate measures individually (depends on

the customer)

Three basic domains of energy measures:

EAS v1.0; energy – economy calculations

Heating System

Building Envelope

Hot Water

EAS v1.0; graphical presentation

EU Directive on the Energy Performance of Buildings

Objectives :

To promote the improvement of the energy performance of buildings through cost effective measures (new and existing buildings)

The Directive require the following to be introduced:

Methodology for calculating the energy performance of buildings;

Application of performance standards for new and existing buildings

Certification schemes for buildings;

Regular inspection and assessment of boilers, heating systems and

air conditioning systems

Adjusted versions of further developed Norwegian methods and tools could support Slovakia to comply with the EU Directive !

Project proposed to the Norwegian Financial Mechanism

“Slovakian adoption of tools and software for energy certification, auditing and monitoring of buildings”

Adjustment of manuals and tools

Adjustment of Software for calculating the energy performance of buildings

Development of Slovakian performance indicators

Training of trainers

Pilot project

Updating of University education programmes

Continued training of energy auditors

Costs

...and then weimplemented the EU EPB Directive

Slovak University of Technology

Faculty of Civil Engineering in Bratislava

Prof. Ing. Dusan PETRAS, PhD.