Transcript the potential of the building sector, by Dr. Efrosini

Sustainable Energy Action Plans for cities:
the potential of the building sector
E.Giama1,*, T.Slini2 and A.M. Papadopoulos1
1 Process
Equipment Design Laboratory
2 Laboratory of Heat Transfer and Environmental Engineering
Aristotle University of Thessaloniki
School of Engineering
Department of Mechanical Engineering
*Dr.
Efrosini Giama, [email protected]
6th International PROMITHEAS Conference on Energy and Climate Change
1
Targets to achieve
The Legislative framework is focused on priorities that include the following:
• Energy efficiency;
• Reduction of greenhouse gas (GHG) emissions;
• Integrated energy market;
• Consumers highest possible level of protection and security;
• Energy technology and innovation;
6th International PROMITHEAS Conference on Energy and Climate Change
2
The Energy for Mayors Project
The target: Local authorities are committed to go beyond the European climate
and energy objective set for 2020 by decreasing carbon dioxide (CO2) emissions in
their regions by at least 20%.
•
•
•
•
•
Sustainable Energy Action Plans (SEAPs) is a formal commitment towards a
sustainable energy future describing the direction in which authorities need to
move. So far it has achieved:
180 new municipalities joining the Covenant
60+ municipalities accompanied with their SEAP development and implementation
34 new Covenant Coordinators (CC) or Covenant Supporters (CS) created to help
communities
10 Energy Days organized per year in the project regions
8 pilot Energy Management Systems (EMS) implemented.
6th International PROMITHEAS Conference on Energy and Climate Change
3
Initiatives for Local Authorities (1/2)
Initiatives within the Energy for Mayors commitment:
•Retrofit of municipal building stock (restoration, standards and audits).
• Effective management of energy transportation.
• Monitoring of fuel consumption by the public transport.
• Preventive maintenance of transport vehicles.
• Renewal of the transport vehicles fleet.
6th International PROMITHEAS Conference on Energy and Climate Change
4
Initiatives for Local Authorities (2/2)
• Optimization of the transport communication schemes with a view to reduce
traffic intensity.
• Preventive maintenance of street lighting systems and equipment.
• Use of renewable energy sources (RES).
• Optimization of the energy distribution systems.
• Sustainable urban and local planning.
• Implementation of pilot bioclimatic architectural projects and civil engineering
solutions for high energy performance.
6th International PROMITHEAS Conference on Energy and Climate Change
5
The Energy for Mayors Project in Central Macedonia
Region
The Laboratory of Heat Transfer and Environmental Engineering (LHTEE) closely
collaborated with the Central Macedonia Region, Greece in order to support the
development and assessment of SEAPs of seven local municipalities of the Greater
Thessaloniki Area:
•
•
•
•
•
•
•
Municipality of Thessaloniki
Municipality of Ampelokipoi- Menemeni
Municipality of Kordelio- Evosmos
Municipality of Delta
Municipality of Lagadas
Municipality of Thermaikos
Municipality of Chalkidona.
6th International PROMITHEAS Conference on Energy and Climate Change
6
Current Situation in Building Sector (1/4)
• 68% of the total building stock, is constructed before the Thermal Insulation Regulation
in Buildings in 1979.
• The insufficient implementation of the Thermal Insulation Regulation in Buildings
considered over the period to 1985.
• The continuous increase in both number and installed capacity of systems and
appliances that consume mainly electricity.
•Thermal comfort need in the summer, combined with the lower cost of equipment, led
to the installation and operation of over 3,000,000 conditioning units.
6th International PROMITHEAS Conference on Energy and Climate Change
7
Current Situation in Building Sector (2/4)
• Underestimate the energy planning in building design.
• The delayed introduction of an updated, integrated energy regulation to the Greek
legislation. Only in 2010 the Energy Performance of Buildings Regulations (KENAK, TEE,
2010) came into force at a time when, unfortunately, the construction activity was
practically diminished.
• Relevance between year of construction and energy consumption (kWh/m2) in
Municipality of Lagadas
Year
1960
1961-85
1986-95
1996-
Single house
450
450
250
180
Multi Store Building
380
340
190
165
School
160
160
120
100
Sport Centres
200
200
170
170
• Relevance between year of construction and energy consumption (kWh/m2) in
Municipality of Lagadas after renovations
Year
1960
1961-85
1986-95
1996-
Single house
150
150
110
100
Multi Store Building
100
110
80
80
School
120
120
80
60
Sport Centres
75
75
65
65
6th International PROMITHEAS Conference on Energy and Climate Change
8
Current Situation in Building Sector (3/4)
The annual energy consumption in 42 school blocks in the Municipality of
Thessaloniki for the period 2008-2012 (in kW)
6th International PROMITHEAS Conference on Energy and Climate Change
9
Current Situation in Building Sector (4/4)
The annual energy consumption of public buildings in the Municipality of Lagadas
(in kW) by built year.
6th International PROMITHEAS Conference on Energy and Climate Change
10
Methodological Approach (1/3)
The buildings were divided according to their use:
• Residential buildings: the category includes houses and block of flats.
• Public buildings: this class includes public buildings that are municipal buildings,
municipal services offices, medical and cultural centre, warehouses.
• Schools: the category refers to all school infrastructures that operate under the
surveillance of the municipality.
• Sport centers: the class consists of open air grounds and indoor facilities.
6th International PROMITHEAS Conference on Energy and Climate Change
11
Methodological Approach (2/3)
According to their year of construction the buildings were classifies as follows:
• Before 1960: non insulated with old methods of construction
• 1961 - 1985: non insulated
•1986 - 1995: poorly insulated
•1996 - 2010: fully insulated (according to the Thermal Insulation Regulation)
•2011 – today: structured employing the KENAK.
Depending on the age of the building and construction characteristics, the primary
energy consumption was calculated by the Hellenic Energy Performance tool TEE-KENAK.
6th International PROMITHEAS Conference on Energy and Climate Change
12
Potential Interventions in Public Buildings
1 Thermal insulation of roof
2 Thermal insulation of facades
3 Replacement of openings
4 Thermal insulation of pilotis
5 Insulation of pipes
6 Installation of solar units for hot water use
7 Replacement of boiler
8 Installation of automation systems
6th International PROMITHEAS Conference on Energy and Climate Change
13
Concluding…..
The issue of energy renovation measures in existing buildings is important and
complex.
Considering the harsh reality of Greece, a dramatic increase of energy poverty
is already prevailing and this has been proven, as a result of the most dramatic
drop in living standards experienced anywhere since World War II.
Furthermore, as those results do not take into consideration the tax increase
on oil and the price increase in electricity in the winter period 2012-2013, they
are an alarming warning for the coming years.
The role of municipalities and regional authorities is crucial for a series of
reasons: they are responsible for the operation of public buildings affecting
sensitive population groups, like schools and can provide the good example
needed to promote new energy conservation technologies.
Finally, international cooperation is valuable, in order to develop sustainable
and viable energy action plans. Multilateral initiatives seem to be the most
successful way to address climate change with Energy for Mayors to be
recognized as a successful example.
6th International PROMITHEAS Conference on Energy and Climate Change
14
Thank you for your attention
6th International PROMITHEAS Conference on Energy and Climate Change
15