ENERGY PERFORMANCE CERTIFICATE IN BUILDINGS

Energy Performance Certificate: It was defined and obligated in the Energy Efficiency Law no 5267 and Energy Performance Regulation issued by the Ministry of Public Works and Settlement.  As a minimum, it expresses the document, which contains information on energy requirement and energy consumption classification of a building, insulation features and performance of heating and/or cooling systems.

·         Energy Performance Certificate is regulated for current buildings with total area of use of 1.000 m2 and above, and newly commissioned buildings.

·         Energy Performance Certificate is prepared by the organization authorized to give energy performance certificate and is approved the administration concerned. ·         This document is an indispensable part of building use permit for new buildings.

·         Energy Performance Certificate is valid for 10 years as of the date of issuance.   

·         Moreover, according to the BEP-TR method, new buildings to obtain energy performance certificate cannot have energy consumption and CO2emission of class D or more.

·         Energy Performance Certificate and related reports to be given by institutions and organizations other than Organizations Authorized to Issue Energy Performance Certificate are declared null and void. Such documents and reports are not approved by the administrations concerned.

ENERGY EFFICIENT BUILDING 

It is ensured with a process integrity from project stage to implementation. The regulation started to be implemented in January 2011. Your building energy class will be determined based on electricity and fuel consumptions and CO2 emissions of your building. You can know how much energy you will consume and what energy class it has before buying your building or designing your house. An energy efficient building is a profitable investment both for contractors and buyers.  

 

Exemplary applications that can be performed for our buildings to be energy efficient buildings:

 

·         Building insulation must be performed. Heat loss in buildings is caused by roof approximately by 40% and floors and windows by 20%. Energy saving up to 50% is ensured through building insulation. Repayment periods are between 2-4 years.

·         While designing new houses, one must pay attention to the fact that it must be able to benefit from natural sunlight.

·         Double-layer and/or low-e layer high window with high energy efficiency must be selected.

·         Energy saving bulbs must be selected in building illumination. Motion sensor armatures must be used in illumination of apartment staircases.

·         Alternative energy sources such as solar or wind must be utilized.

·         More efficient systems such as condensing central heating boiler must be preferred in individual heating.

·         Automatic control systems measuring outside temperature must be used in central heating systems.

·         Air leakages in doors and windows in your flat must be reduced.

·         Electric devices must not be left in stand-by position while not in use (including chargers and adapters).

·         If you are using air-conditioner, you must perform annual filter and coil cleaning; external units with dirty internal and external units will consume more energy.

 

      

IMPORTANT DEFINITONS:

·         Energy performance certificate: As a minimum, it expresses the document, which contains information on energy requirement and energy consumption classification of a building, insulation features and performance of heating and/or cooling systems.

BEP-TR: Software program used for preparing energy performance certificates and accessed from the web site of the Ministry.

·         Energy efficiency in buildings: Energy consumption reduction works in buildings without causing drop of life standard and service quality.
 

·         Area of use: Areas of the building, which are constructed and usable, remaining after walls, columns, skylights, entrance halls, outbuildings, vent-holes, fringes, installation galleries and floors, non-commercial sections used as parking lot for the building, fire-escape stairs, elevators, natural floor terraces, boiler room, coal bunker, shelter, water depot and hydrophore flat are excluded.
 

·         Important alteration: Alterations, in which total alteration amount in subjects affecting energy consumption in a building such as façade and mechanical and electric installation exceeds 25% of the real estate tax base of that building.
 

·         Building construction area: Areas of all constructed floors of the building including basement, places between mezzanine and roof, and common areas excluding skylights.

 

BUILDING ENERGY PERFORMANCE REGULATION

Energy Performance Law no 5267 enacted in May 2 2007 and the regulations concerned impose several obligations and responsibilities on consumers and people in the sector. Questions and answer regarding these obligations and responsibilities are given below.

·         What is the purpose of Energy Performance of Buildings (EPB) Regulation?
The purpose of this regulation is to regulate procedures and principles concerning efficient and productive use of energy and energy sources in buildings, prevention of energy waste and protection of the environment.  

 

·         When did EPB Regulation enter into force?
The regulation concerned was published in December 5 2008 and entered into force in December 5 2009. The last edit regarding the regulation was published in the Official Gazette in April 1 2010.

 

·         For which buildings does the obligation to use Central Heating System apply?
The provision 'Central heating system is built in buildings, which are recently constructed and building license date of which is after December 5 2009, in the event that building license based total area of use is 2000 m2 and above' is imposed in Article 13-3 of Chapter 5 of the Regulation concerned.   Article 13-3 of the regulation does not apply for buildings with building licenses before December 5 2009.

 

·         What does EPB require apart from Central Heating System?
The Regulation requires that:  

o    Calculations methods, standards, methods and minimum performance criteria regarding preparation and application of building projects and energy performance certificates be prepared by prioritizing energy efficiency in subjects such as architectural design, mechanical installation, illumination and electric installation,

o    Authorizations be made for preparation of energy performance certificate, building inspections and audit activities.  

 

·         What is 'Central Heating System'?
It is the system, which enables heating of more than one independent section through heating energy obtained from a single centre.

 

·          How is the use of central heating boilers defined in EPB Regulation?
Article 13 (m2 restriction) mentioned above does not ban central heating boilers, which are suitable for heating and can offer highly efficient solutions. This article of the regulation applies only for buildings, which are to be built and have area of use of 2000 m2 and above. Consequently, final consumers can choose economic the efficient central heating boiler systems in current buildings (buildings with building license date before December 5 2009). 

 

 

 

 

·         Are there any obligations imposed by EPB regarding applications such as detached building, villa etc.?
Condensing type devices are used in detached buildings or in independent sections in buildings, which have area of use of 250 m2 and above, have individual heating system and in which gas fuel is used.

 

·          What other obligations does EPB impose in order to provide Energy Efficiency?
Another obligation imposed by EPB is related to yield values of central system boilers. According to that, yield value of boilers to be used in the central system cannot be lower than 75% in solid fuel boilers, and lower than double star yield class specified in Article 7 of the Regulation Concerning the Yield Requirements of Liquid and Gas Fuel New Hot Water Boilers published by the ministry of Industry and Trade in the Official Gazette dated 05/06/2008 and numbered 26897 for liquid and gas fuel boilers.

 

·         What must we pay attention to in the event that systems requiring burner are used in buildings with building license date of December 5 2009 and after?
In boilers, which operate with liquid or gas fuel forced draught burners to be used in central heating systems:

o    Two-stage or proportional control burners in systems having heating capacity of up to 100 KW,  

o    Only proportional control burners in systems having heating capacity of 100 KW-1200 KW in liquid fuels, and 100 KW-600 KW in gas fuels,

o    Flue gas oxygen control system is used in systems having heating capacity above 3000 KW. In systems where boilers with capacity of 500 KW and above are used, water softening or conditioning or both systems must be installed.



       

 

·         Does EPB impose any obligation on systems regarding maintenance?

According to EPB regulation, flue gas analysis and system maintenance must be performed in the beginning of each operational period and at least for once a year in liquid, gas and solid waste central heating systems. A service form containing also system performance is prepared and kept in order to be presented to the related authorities when required.

·         What are the duties of Energy Efficiency Consulting (EEC) Companies?
EECs carry out training, certification, and survey and consulting activities within the frame of service agreements made between industrial enterprises, building owners or managements; prepare projects towards application of precautions they have determined through energy efficiency survey study, carry out alterations within the scope of implementing agreement in line with the project, guarantee energy saving amount and submit activity report annually to the institution, from which they obtain authorization.

 

·         What are the advantages of energy performance certificate for building and flat owners? 
Since Energy Performance Certificate is a document showing how much energy a building or an independent section within a building can save, it will provide an anticipation regarding energy expenses for the buyer or lessee before selling and renting operations. When a building or an independent section is sold or rented out, buyer or lessee is also given the Energy Performance Certificate of that building by the owner.

 

·         Do current buildings have to obtain energy performance certificate?

Energy Performance Certificate must be prepared within ten years as of date of issue of the Energy Efficiency Law (Until May 2 2017) for current buildings or buildings, construction of which is ongoing and which have not obtained occupancy permit yet.

 

·         What must Contractors/Building Managers etc. pay attention to in buildings where central heating system design is compulsory?

o    In buildings where central heating system design is compulsory, it is obligatory to use temperature control equipment and control equipment dependent on internal and/or external temperature in heating centre.   

o    In buildings having central heating system, central or local heat or temperature control devices and systems, which enable sharing of heating expenses by heat usage amount, are used. Consumers become obliged to use calorimeter and heat cost allocator.  

o    In the event that temperature control devices are used in independent sections of buildings with central heating system, heating installation pump groups with variable speed according to time, pressure or fluid flow rate must be selected. Contractors or building managers shall be responsible for selecting the system according to that.

o    Moreover, yield value of boilers to be used in the central system to be selected cannot be lower than 75% in solid waste boilers, and lower than double star yield class specified in Article 7 of the Regulation Concerning the Yield Requirements of Liquid and Gas Fuel New Hot Water Boilers published by the Ministry of Industry and Trade in the Official Gazette dated 05/06/2008 and numbered 26897 for liquid and gas fuel boilers. 

  • In systems where boilers with capacity of 500 KW and above are used, water softening or conditioning or both systems must be installed.

  • In systems, which are planned for preparation of central use sanitary hot water and in which hot water is stored, designs are made such that temperature of the sanitary hot water will not exceed 60°C. However, in order to prevent legionella effect, water temperature is kept at minimum 60°C for at least one hour a week in stored hot water.

  • A separate hot water boiler is allocated for use during summer in case the capacity of sanitary hot water is below the minimum boiler modulation operating sub-limit.

  • In buildings, which are used as dwellings having central heating system, devices must have automation system that will perform output water control and external air control in minimum.

 

 

  • In buildings having central heating system, measures must be taken such that temperature of heated indoors will not drop below 15°C.

  • Building managers are responsible for having flue gas analysis and system maintenance perform, and reporting to the authorities concerned in the beginning of each operational period and at least for once a year in liquid, gas and solid waste central heating systems.

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