Browse

Journals By Subject

Life Sciences, Agriculture & Food
Chemistry
Medicine & Health
Materials Science
Mathematics & Physics
Electrical & Computer Science
Earth, Energy & Environment
Architecture & Civil Engineering
Education
Economics & Management
Humanities & Social Sciences
Multidisciplinary

Books

Publish Conference Abstract Books
Upcoming Conference Abstract Books
Published Conference Abstract Books
Publish Your Books
Upcoming Books
Published Books

Proceedings

Events

Events
Five Types of Conference Publications

Join

Join as Editorial Board Member
Become a Reviewer

Information

For Authors
For Reviewers
For Editors
For Conference Organizers
For Librarians
Article Processing Charges
Special Issue Guidelines
Editorial Process
Manuscript Transfers
Peer Review at SciencePG
Open Access
Copyright and License
Ethical Guidelines
Submit an Article
Research Article | | Peer-Reviewed

Certification of Buildings and Measures of Energy Efficiency Class Improvement

Naira Egnatosyan,  Siranush Egnatosyan*,  Lusine Martirosyan,  Aleksey Rudomyotkin
Published in International Journal of Architecture, Arts and Applications (Volume 11, Issue 1)
Received: 28 January 2025     Accepted: 14 February 2025     Published: 27 February 2025
Views:       Downloads:
Download PDF
Abstract

Nowadays, the problems of energy efficiency and energy saving are found in different spheres of construction. Various energy-efficient technologies are used to reduce energy consumption. The certification process is carried out at different stages: design, construction and reconstruction, which is leading to improvement of energy efficiency of the building, etc. The article covered the European standards that determine the coefficient of seasonal use of thermal energy (E), as well as the current energy efficiency classes of the Republic of Armenia. Both the EU and the Republic of Armenia have tightened requirements for enclosing structures. In Armenia, the thermal characteristics of enclosing structures can be improved by 15% to 41% depending on the degree-day value of the heating period. The value of the specific characteristic of thermal energy depends on climatic conditions, space-planning solutions, orientation of the building, etc. The standardized value of this characteristic for heating and ventilation varies from 0.414 to 0.336 W/m3°C depending on the area of the heated building and its number of storeys. And for a residential building with an area of 1000 m2 and more, the non-standardized value does not depend on the number of storeys of the building. Classes of energy efficiency of buildings are determined by the value of the deviation of the calculated value of the specific characteristic of the consumption of thermal energy for heating and ventilation of the building from the standardized one. For determining the class of energy efficiency, the article considers a one-story residential building without thermal insulation and with thermal insulation of enclosing structures. To increase the energy efficiency class of a building from D to C, it is necessary to improve the thermal characteristics of the enclosing structures, i.e. reduce heat loss of buildings by 30% or more.

Published in International Journal of Architecture, Arts and Applications (Volume 11, Issue 1)
DOI 10.11648/j.ijaaa.20251101.15
Page(s) 41-47
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2025. Published by Science Publishing Group
Previous article
Keywords

Energy Efficiency, Energy Saving, Certification of Buildings, Degree-day of the Heating Period, Thermal Characteristics, Enclosing Structures

1. Introduction
Increasing energy efficiency and energy saving are gradually becoming the norm in our life. Both political and economic barriers arise to the implementation of energy conservation and energy efficiency. The development of civilization has led to environmental problems, lack of energy resources, and so on. The world community is faced with the need to take serious measures to reduce energy consumption both in industry and in the housing sector
[1-3]
. Nowadays, two areas of energy efficiency improvement are the most promising.
1) saving energy resources by minimizing energy consumption and energy losses in buildings and structures,
2) application of new technologies that use renewable energy sources.
The energy efficiency of a residential building is ensured by the implementation of the following measures:
1) optimal thermal insulation: the use of enclosing structures with high thermal characteristics,
2) energy-saving windows: double-glazed windows, windows with inert gas, as well as heat-reflecting glass coatings,
3) energy-saving systems: use of ventilation emissions by heat recovery,
4) renewable energy sources: use for heating and domestic hot water supply
[4, 5]
.
Most of the apartment buildings in Armenia were built 30-60 years ago, and now work is underway to strengthen them, extend their service life, reduce heat loss and heat gain by modernizing them according to energy efficiency standards. In Armenia, an average of $100 to $120 was spent on heating per month. For new buildings, as well as modernized buildings, the average monthly heating fee is $60. Energy efficiency programs are being implemented in different regions of Armenia: in Alaverdi, Tashir, Dilijan, Spitak, Berd, Gyumri, Kajaran, Ashtarak and other cities (Figure 1), and in Yerevan, there are not only energy-efficient residential buildings, but also kindergartens, sports schools and cultural centers.
[1, 6]
.
Figure 1. Modernized building in the city of Spitak
[1]
.
The main laws “About Energy”, “About Energy Saving and Renewable Energy”, etc. has adopted and is implementing in RA. In 2007, the National Program on Energy Saving and Renewable Energy was approved. In 2010, the National Action Plan on Energy Efficiency was approved, which provides for the development of new standards for energy efficiency in buildings. In 2011 the Five-Year Strategic Program for the Management, Maintenance and Operation of the Multi-Apartment Housing Stock of the Republic of Armenia was approved. In 2004, Armenia joined the IBC “Thermal Protection of Buildings” interstate building codes, which considered the requirements of the relevant EU documents, and the relevant document was prepared in 2008 within the framework of the UNDP/GEF heat supply project
In 2009, within the framework of the same project, proposals were developed for energy audit and certification of apartment buildings. In 2013, a draft of legal and institutional measures aimed at the development of energy efficiency in the field of urban development was developed.
[7, 8]
. In 2016, legal and institutional measures aimed at improving the energy efficiency of buildings
[1]
were developed, which are included in the requirements of building codes and legislation in the field of energy efficiency. But, unfortunately, these legislative documents specify only the requirements for enclosing structures of buildings and structures, and do not provide measures or measures to improve the energy efficiency class. This problem is important, since in Armenia old buildings need to be modernized and the energy efficiency class needs to be increased from a lower level to a higher one. The article discusses and provides an example of upgrading the class from a lower D class to a normal level. Since energy efficiency is an important area of development both in Europe and in Armenia, it is desirable to draw parallels between European and Armenian standards and types of certificates.
2. Materials and Methods
The following sources of information were used: European standards for energy efficiency of buildings, economic standards, and scientific publications on the topic. The standards were compared according to the following criteria: thermal insulation requirements, energy consumption calculation methods, energy efficiency classification.
In foreign countries with a mild climatic condition (Spain, France, Germany, the Netherlands, etc.), the requirements for the thermal resistance of enclosing structures are more stringent
[9, 10]
. For example, the heat transfer coefficient for windows ranges from 1.3 to 2.5 W/(m2°C), and for walls and floors 0.17 W/(m2°C), for roofing 0.09 W/(m2°C), which led to a decrease in heat flow and an increase in the energy efficiency of buildings. In Armenia, to increase the energy efficiency of buildings, they also tightened the requirements for the thermal characteristics of the enclosing structures, and depending on the duration of the heating season, the required thermal resistance ranges from 1.8 to 4.6 (m2°C)/W or the required heat transfer coefficient is 0.22 to 0.55 W/(m2°C)
[5]
.
The energy efficiency of buildings is determined by the coefficient of seasonal use of thermal energy (E): passive - E ≤ 15 kWh/(m2year), energy-efficient - E≤ 70 kWh/(m2 year), ordinary house - E ≤ 110 kWh/(m2 year)
[9, 10]
. To assess the energy efficiency and class of buildings in European countries, it is customary to use the EP (Energy Performance) coefficient (Table 1), which determines the amount of electricity spent on heating, hot water, lighting, ventilation, and the operation of household appliances
[10, 11]
.
Table 1. Building class and energy efficiency coefficient (EP).

Class name

Class of the building

Energy Efficiency Coefficient or Energy Performance (EP)

Passive

А

EP ≤ 0.25

Economical

В

0.26 < EP ≤ 0.50

Energy saving

С

0.51 < EP ≤ 0.75

Standard

D

0.75 < EP ≤ 1

Less energy-consuming

Е

1.01< EP ≤ 1.25

Energy-consuming

F

1,26 < EP ≤ 1,50

The most energy-consuming

G

EP > 1.51
The energy efficiency of residential and public buildings in Armenia is assessed according to the current regulatory data of MSN “Thermal Protection of Buildings”, which provides the classification of buildings: very high class (A++, A+, A), high (B++, B), normal (C+, C, C-), lower (D), low (E). Classes A, B, C are established for newly constructed and reconstructed buildings at the stage of project development and subsequently they are specified based on the results of operation.
The requirements for enclosing structures in Armenia are as strict as in European countries, these measures lead to improvement of thermal performance, as well as an increase in the energy efficiency class of buildings and structures. European standards have advantages, since they consider energy efficiency in a complex, taking into account the systems that provide a microclimate in the premises, and Armenian standards take into account only the loads on heating and ventilation. For clarity, Table 2 presents possible correspondences of energy efficiency classes.
Table 2. Comparison of energy efficiency classes European Armenian.

European

Armenian

Class name

Class of the building

Class name

Class of the building

Passive

А

very high

А++, А+, А

Economical

В

high

B++, B

Energy saving

С

normal

C+, C,

Standard

D

normal

C-

Less energy-consuming / Energy-consuming

Е, F

lower

D

The most energy-consuming

G

low

Е
Within the framework of the project, studies were carried out to determine the class of the building depending on the value of the specific consumption of thermal energy for heating and ventilation of the building from the volume of the structure.
3. Results
The required heat transfer value is determined considering the simultaneous implementation of three requirements:
1) element-by-element: heat transfer resistance should not be less than the standardized value,
2) complex: the specific thermal protection of the building should not exceed the standard value,
3) sanitary and hygienic: the temperature on the internal surfaces of the enclosing structures should not be lower than the minimum permissible value.
In different regions of Armenia, the requirements for enclosing structures vary depending on the duration and average temperature of the outside air during the heating period, or rather, on the "degree days of the heating period". We carried out calculations to establish how this factor affects the thermal characteristics and how much it is necessary to increase the thermal insulation to ensure the required conditions. Figure 2 shows the normalized value of the specific thermal protection of the building from the heated volume of the building and the degree-days of the heating period.
It is evident from the graph that the standardized value of specific thermal protection decreases with an increase in the volume of the building and the degree-day value of the heating period, which leads to a tightening of the requirements for the thermal characteristics of structures from 15% to 41%.
Figure 2. Standardized values of the specific thermal protection characteristics of a building depending on the heated volume of the building and degree-days of the heating period. Standardized values of the specific thermal protection characteristics of a building depending on the heated volume of the building and degree-days of the heating period.
For example: assuming the internal air temperature of 20°C, the degree-day of the heating period was, for Yerevan Dday = 2660°C day, Jermuk Dday = 4558°C day and Gyumri Dday = 4177°C day.
[12]
. Therefore, for a heated building with a volume of 300 m3, the specific thermal insulation characteristic of the building for Yerevan is -0.76 W/m3°C, Jermuk -0.6 W/m3°C, and Gyumri -0.62 W/m3°C.
The specific heat protection characteristic of building structures influences the determination of the thickness of the heat-insulating layer, and to assess energy efficiency it is needed to determine the values of the specific characteristics of thermal energy consumption for heating and ventilation of a building.
The calculated value of the specific characteristic of thermal energy consumption for heating and ventilation of the building depends on climatic conditions, space-planning solutions, orientation of the building, and thermal insulation properties of enclosing structures. Figure 3 shows the values of the standardized specific characteristics of thermal energy consumption for heating and ventilation of low-rise residential buildings from the area of the heated building.
Figure 3. Standardized specific characteristic of thermal energy consumption for heating and ventilation of low-rise residential buildings from the area of the heated building.
As can be seen from the graph for a low-rise residential building with an area of 1000 m2 and more, the standardized specific characteristic of thermal energy for heating and ventilation is 0.336 W/m3°C, and does not depend on the number of storeys of the building.
4. Discussion
Considering the above data, calculations were carried out to determine the energy consumption of the building for heating and ventilation of low-rise residential buildings (Figure 4.) taking into account the climatic indicators of Yerevan.
Figure 4. Values of the building's energy consumption for heating and ventilation of low-rise residential buildings from the area of the heated building. Values of the building's energy consumption for heating and ventilation of low-rise residential buildings from the area of the heated building.
From Figure 4 it is clear that for a residential low-rise building with an area of 250 m2, for 1, 2, 3 and 4-storey buildings, energy consumption for heating and ventilation is respectively - 11488.5 W, 24087 W, 37878.6 W, 52836 W.
To assess the energy efficiency of a building and the energy saving class, it is necessary to determine the deviation of the calculated value of the specific characteristic of thermal energy consumption for heating and ventilation of the building from the standard. Figure 5 shows the calculated (base) value of energy consumption (11488.5 W) for a one-story building with an area of 250 m2 and the corresponding energy efficiency classes.
Figure 5. The estimated (baseline) value of energy consumption (11488.5 W) for a one-story building with an area of 250m2 and the corresponding energy efficiency classes. The estimated (baseline) value of energy consumption (11488.5 W) for a one-story building with an area of 250m2 and the corresponding energy efficiency classes.
For example, let's consider a non-thermally insulated one-storey residential building with the following parameters: a=12 m, b=20.8 m, h=3 m, with an area of 250 m2, the heat load for Yerevan is 17250 W, which corresponds to a lower D class of energy efficiency. By applying thermal insulation measures, it is possible to increase the energy efficiency class, according to the calculated data, when adding a thermal insulation (polyurethane) layer with a thickness of 60 mm, the thermal load of the building decreased to 11250 W, which corresponds to the energy efficiency normal C class
[13]
.
In Armenia, as in European countries, a standard for energy efficiency certificates for buildings and structures has been developed, which is shown in Figure 6.
This document contains information on efficiency, i.e. energy consumption, which is necessary for heating and ventilation of the building. This certificate will allow us to compare the energy efficiency of different buildings.
In general, the necessary regulatory framework is being created in Armenia and specific measures are being implemented to improve the energy efficiency of buildings, which will reduce energy consumption, reduce greenhouse gas emissions and improve the quality of life of people.
Figure 6. Energy Efficiency Certificate Accepted in Armenia. Energy Efficiency Certificate Accepted in Armenia.
5. Conclusions
1. Depending on the value of the degree days of the heating period, the thermal characteristics of the enclosing structures should be improved from 15% to 41%.
2. The standardized specific characteristic of thermal energy for heating and ventilation for a residential building with an area of 1000 m2 and more does not depend on the number of storeys of the building.
3. To increase the energy efficiency class of a building from a lower D class to a normal C class and above, it is necessary to reduce the heat loss of buildings by 30% or more.
Abbreviations

NUACA

National University of Architecture and Construction of Ar-menia

IGN

Institute of Geological Sciences

NAS

National Academy of Sciences

RA

Republic of Armenia

E

Energy

EU

European Union

IBC

Interstate Building Codes

UNDP

United Nations Development Programme

GEF

Global Environment Facility

EP

Energy Performance

HGSV

Heat and Gas Supply and Ventilation
Acknowledgments
We are thankful to the National University Architecture and Construction of Armenia for providing us with the resources and facilities needed for our experiment. Their encouragement and motivation pushed the students to work hard and strive for science.
Author Contributions
Naira Egnatosyan: Conceptualization, Data curation, Formal Analysis, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – original draft
Siranush Egnatosyan: Formal Analysis, Investigation, Methodology, Resources, Software, Validation, Visualization, Writing – original draft
Lusine Martirosyan: Conceptualization, Formal Analysis, Funding acquisition, Investigation, Resources, Validation, Visualization, Writing – original draft
Aleksey Rudomyotkin: Conceptualization, Formal Analysis, Funding acquisition, Investigation, Software, Validation, Writing – original draft
Funding
This work is not supported by any external funding.
Data Availability Statement
The data supporting the outcome of this research work has been reported in this manuscript.
Conflicts of Interest
The authors declare no conflicts of interest.
References
[1] Jam News, Modernization of old buildings in Armenia: energy savings and modern design.

https://jam-news.net/energy-efficiency-of-buildings-in-armenia/ (accepted 17.05.2023).

[2] Shirokov, E., Zero Energy Eco house – the Real Step to Sustainable Development. Architecture and construction of Russia. 2009, Volume 2, 35–39. [Ekodom nulevogo energopotrebleniya - real'nyj shag k ustojchivomu razvitiyu] (in Russian).
[3] Santamouris, M., Vasilakopoulou, K., Present and future energy consumption of buildings: Challenges and opportunities towards decarbonisation, e-Prime - Advances in Electrical Engineering, Electronics and Energy. 2021, Volume 1,

https://doi.org/10.1016/j.prime.2021.100002

[4] Construction Norms SP 50. 13330.12. Thermal protection of buildings: updated version of SNiP 23-02-2003. 2012, [SP 50. 13330.12. teplovaya zashchita zdanij: aktualizirovannaya redakciya SNiP 23-02-2003. 2012] (in Russian).
[5] Construction Norms RACN 24-01-2016 “Thermal Protection of Buildings”, 2016. (in Armenian).
[6] Green Economy Financing Facility. Where finance and green technologies meet. Energy Efficiency of Buildings. Energy Efficiency of Buildings in Armenia

https://ebrdgeff.com/armenia/energy-efficiency-of-buildings-in-armenia/ (accepted 2017).

[7] Srapyan, S., Improving Energy Efficiency in the Housing Sector. Fourth International Forum: Energy for Sustainable Development. Tbilisi, 2013, 17-19 September, pp. 1-17 [Povyshenie jenergojeffektivnosti v zhilishhnom sektore] (in Russian).
[8] Podlesnykh, A., Improving the Energy Efficiency of Housing and Communal Complex Facilities // International Journal of Information Technologies and Energy Efficiency. 2024. Vol. 9, 5(43), pp. 126–133 [Povyshenie jenergojeffektivnosti ob"ektov zhilishhno-kommunal'nogo kompleksa] (in Russian).
[9] Egnatosyan, S., Badalyan, M., & Egnatosyan, N. Thermal Technical Requirements for Wall Materials and Analysis of Thermal Stability of Enclosing Structures under Non-Stationary Heat Flow. In Structural Engineering and Materials. International Conference on Structural Engineering and Materials. Trans Tech Publications Ltd. 2023. pp. 35-43

https://doi.org/10.4028/p-z696zz

[10] Energy-efficient house: how to spend at least on heating. Rubric: House and construction.

https://www.forumhouse.ru/journal/articles/9883-energoeffektivnyi-dom-kak-tratit-minimum-na-otoplenie (accepted 23.12.2020) [Energoeffektivnyj dom: kak tratit' minimum na otoplenie.] (in Russian).

[11] Chatterjee, D., Ray, S., Kumar, R., Certification of Green Buildings. Wood Properties and Processing Division, ICFRE – Institute of Wood Science and Technology, Bengaluru. 2022, 3(3) pp. 51-57.

https://www.researchgate.net/publication/371781021_Certification_of_Green_Buildings

[12] Egnatosyan, S., Hakobyan, D., & Sargsyan, S. Comparative Analysis of the Use of Thermal Insulation Materials Depending on Climatic Conditions and Comfort Microclimate Supply Systems. In Key Engineering Materials. Trans Tech Publications, Ltd. 2022, Vol. 906, pp. 99–106).

https://doi.org/10.4028/www.scientific.net/kem.906.99

[13] Melikyan Z., A., Heating–Cooling of Buildings. Efficiency of Conventional and Renewable Technologies. Germany: Lambert Academic Publishing, 2012, 344.
Cite This Article
Plain Text BibTeX RIS

  • APA Style

    Egnatosyan, N., Egnatosyan, S., Martirosyan, L., Rudomyotkin, A. (2025). Certification of Buildings and Measures of Energy Efficiency Class Improvement. International Journal of Architecture, Arts and Applications, 11(1), 41-47. https://doi.org/10.11648/j.ijaaa.20251101.15

    Copy | Download

    ACS Style

    Egnatosyan, N.; Egnatosyan, S.; Martirosyan, L.; Rudomyotkin, A. Certification of Buildings and Measures of Energy Efficiency Class Improvement. Int. J. Archit. Arts Appl. 2025, 11(1), 41-47. doi: 10.11648/j.ijaaa.20251101.15

    Copy | Download

    AMA Style

    Egnatosyan N, Egnatosyan S, Martirosyan L, Rudomyotkin A. Certification of Buildings and Measures of Energy Efficiency Class Improvement. Int J Archit Arts Appl. 2025;11(1):41-47. doi: 10.11648/j.ijaaa.20251101.15

    Copy | Download 

  • @article{10.11648/j.ijaaa.20251101.15,
  author = {Naira Egnatosyan and Siranush Egnatosyan and Lusine Martirosyan and Aleksey Rudomyotkin},
  title = {Certification of Buildings and Measures of Energy Efficiency Class Improvement
},
  journal = {International Journal of Architecture, Arts and Applications},
  volume = {11},
  number = {1},
  pages = {41-47},
  doi = {10.11648/j.ijaaa.20251101.15},
  url = {https://doi.org/10.11648/j.ijaaa.20251101.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijaaa.20251101.15},
  abstract = {Nowadays, the problems of energy efficiency and energy saving are found in different spheres of construction. Various energy-efficient technologies are used to reduce energy consumption. The certification process is carried out at different stages: design, construction and reconstruction, which is leading to improvement of energy efficiency of the building, etc. The article covered the European standards that determine the coefficient of seasonal use of thermal energy (E), as well as the current energy efficiency classes of the Republic of Armenia. Both the EU and the Republic of Armenia have tightened requirements for enclosing structures. In Armenia, the thermal characteristics of enclosing structures can be improved by 15% to 41% depending on the degree-day value of the heating period. The value of the specific characteristic of thermal energy depends on climatic conditions, space-planning solutions, orientation of the building, etc. The standardized value of this characteristic for heating and ventilation varies from 0.414 to 0.336 W/m3°C depending on the area of the heated building and its number of storeys. And for a residential building with an area of 1000 m2 and more, the non-standardized value does not depend on the number of storeys of the building. Classes of energy efficiency of buildings are determined by the value of the deviation of the calculated value of the specific characteristic of the consumption of thermal energy for heating and ventilation of the building from the standardized one. For determining the class of energy efficiency, the article considers a one-story residential building without thermal insulation and with thermal insulation of enclosing structures. To increase the energy efficiency class of a building from D to C, it is necessary to improve the thermal characteristics of the enclosing structures, i.e. reduce heat loss of buildings by 30% or more.
},
 year = {2025}
}

    Copy | Download 

  • TY  - JOUR
T1  - Certification of Buildings and Measures of Energy Efficiency Class Improvement

AU  - Naira Egnatosyan
AU  - Siranush Egnatosyan
AU  - Lusine Martirosyan
AU  - Aleksey Rudomyotkin
Y1  - 2025/02/27
PY  - 2025
N1  - https://doi.org/10.11648/j.ijaaa.20251101.15
DO  - 10.11648/j.ijaaa.20251101.15
T2  - International Journal of Architecture, Arts and Applications
JF  - International Journal of Architecture, Arts and Applications
JO  - International Journal of Architecture, Arts and Applications
SP  - 41
EP  - 47
PB  - Science Publishing Group
SN  - 2472-1131
UR  - https://doi.org/10.11648/j.ijaaa.20251101.15
AB  - Nowadays, the problems of energy efficiency and energy saving are found in different spheres of construction. Various energy-efficient technologies are used to reduce energy consumption. The certification process is carried out at different stages: design, construction and reconstruction, which is leading to improvement of energy efficiency of the building, etc. The article covered the European standards that determine the coefficient of seasonal use of thermal energy (E), as well as the current energy efficiency classes of the Republic of Armenia. Both the EU and the Republic of Armenia have tightened requirements for enclosing structures. In Armenia, the thermal characteristics of enclosing structures can be improved by 15% to 41% depending on the degree-day value of the heating period. The value of the specific characteristic of thermal energy depends on climatic conditions, space-planning solutions, orientation of the building, etc. The standardized value of this characteristic for heating and ventilation varies from 0.414 to 0.336 W/m3°C depending on the area of the heated building and its number of storeys. And for a residential building with an area of 1000 m2 and more, the non-standardized value does not depend on the number of storeys of the building. Classes of energy efficiency of buildings are determined by the value of the deviation of the calculated value of the specific characteristic of the consumption of thermal energy for heating and ventilation of the building from the standardized one. For determining the class of energy efficiency, the article considers a one-story residential building without thermal insulation and with thermal insulation of enclosing structures. To increase the energy efficiency class of a building from D to C, it is necessary to improve the thermal characteristics of the enclosing structures, i.e. reduce heat loss of buildings by 30% or more.

VL  - 11
IS  - 1
ER  -

    Copy | Download

Author Information

  • Naira Egnatosyan

    Heat and Gas Supply and Ventilation Chair, National University of Architecture and Construction of Armenia, Yerevan, Armenia; Institute of Geological Sciences, National Academy of Sciences of the Republic of Armenia, Yerevan, Armenia

    Biography: Naira Egnatosyan – Associate Professor of HGSV Chair, Junior Researcher of the IGS of the NAS of RA. The main scientific fields are energy efficiency, thermal protection, heating, ventilation and air conditioning of buildings and constructions. Took part in the scientific ISTC A787 project “Strategy for Development of Environmentally Safe, Cost Effective and Sustainable Energy Sector of Armenia in the Situation of Shutting Down of the Nuclear Power Plant”. In 2022 took second place in the innovation technology competition and received the “Look into the Future” medal. Currently, the head of the internal grant competition is organized by the NUACA.

    Research Fields: heating, ventilation, air conditioning, energy efficiency, building construction.

    Contact Email

    http://orcid.org/0009-0002-3274-8825

  • Siranush Egnatosyan

    Heat and Gas Supply and Ventilation Chair, National University of Architecture and Construction of Armenia, Yerevan, Armenia

    Biography: Siranush Egnatosyan – Associate Professor of HGSV Chair. In 2011 participated in and completed advanced training courses “Energy Audit and Audit Equipment”, “ESCO Establishment and Basic Business”, organized by USAID. In 2022 took second place in the innovation technology competition and received the “Look into the Future” medal. Currently is a researcher in the program “Maintenance and development of the Construction and Urban Economics Research Laboratory”. The main research fields are energy efficiency of building using heat pumps systems and renewable energy sources.

    Research Fields: heating, ventilation, energy efficiency, energy saving, heat pump.

    Contact Email

    http://orcid.org/0000-0002-7595-2183

  • Lusine Martirosyan

    Heat and Gas Supply and Ventilation Chair, National University of Architecture and Construction of Armenia, Yerevan, Armenia

    Biography: Lusine Martirosyan is a teacher in HGSV Chair. In 2009 completed a bachelor's degree in the field of Thermal Power Plants from the Faculty of Energy of the National Polytechnic University of Armenia. In 2024 completed a master's degree in engineering from the Faculty of Construction of NUACA. The main subjects are automatic systems of domestic gas equipment, engineering systems, heating and cooling of buildings. Currently, research for the internal grant competition is being organized by the NUACA with the topic “Energy Certification of Buildings and analysis of Increasing energy efficiency”.

    Research Fields: heating, ventilation, renewable energy, building construction, thermal protection of buildings.

    Contact Email

    http://orcid.org/0009-0009-8403-0576

  • Aleksey Rudomyotkin

    Heat and Gas Supply and Ventilation Chair, National University of Architecture and Construction of Armenia, Yerevan, Armenia

    Biography: Aleksey Rudomyotkin is a second-year student of the Master of Heat and Gas Supply and Ventilation of the Armenian National University of Architecture and Construction. In 2023, he received a Bachelor of Engineering degree in Water Supply and Wastewater Disposal from the same university. He is a participant in various research programs of the university and a practicing heating and cooling engineer. Currently, research for the internal grant competition is being organized by the NUACA with the topic “Energy Certification of Buildings and analysis of Increasing energy efficiency”.

    Research Fields: water supply, water disposal, heating, ventilation, energy protection of buildings.

    Contact Email

    http://orcid.org/0009-0003-6888-8261

Download PDF

About Us

Science Publishing Group (SciencePG) is an Open Access publisher, with more than 300 online, peer-reviewed journals covering a wide range of academic disciplines.

Learn More About SciencePG

Products

Information

Important Link

Copyright © 2012 -- 2025 Science Publishing Group – All rights reserved.