Development of measures to modernize the heating system in ESSUTM academic building No. 7 and evaluation of economic efficiency

The present work is aimed at analyzing the heating system operation in academic building No. 7 and developing measures to modernize this system with an evaluation of economic efficiency. The analysis involved a thermal analysis of exterior wall envelopes, an on-site inspection of the heating system, as well as measurements of internal microclimate parameters and thermal imaging. Heat losses in rooms were calculated, and a verification hydraulic analysis of the heating system was performed. The inspection revealed deficiencies in the operation of the existing heating system, and two options for modernization measures were developed to address these deficiencies. The first option consists in adjusting the system (removing and adding sections; replacing window seals; replacing piping with that of a different diameter; installing manual balancing valves on risers and branches; installing a pump on the return piping; installing closing sections). The second option involves major repairs and includes additional measures (in addition to those specified above) to insulate the attic flooring and end walls of the building, which can reduce heat losses by 25 %. For both options, automated heating substation equipment was selected. In addition, costs were estimated, economic efficiency was evaluated, and payback periods for each measure were determined. The on-site inspection of exterior wall envelopes and the heating system, as well as measurement of microclimate parameters, provided a means to develop measures to modernize the heating system of academic building No. 7 and evaluate economic efficiency.

1. Livchak V.I., Tabunshchikov Yu.A. Express Energy Audit of Heat Consumption of Residential Buildings: Features of Implementation. Energosberezhenie = Energy saving. 2009;2:8-16. Available from: http://www.abok.ru/for_spec/articles.php?nid=4261 [Accessed 10th December 2023]. (In Russ.).

2. Gagarin V.G. Methods for Economic Analysis of Increasing the Level of Thermal Protection of Building Envelopes. Part 1. AVOK: Ventilyatsiya, otoplenie konditsionirovanie vozdukha, teplosnabzhenie i stroitel'naya fizika = ABOK: Ventilation, Heating, Air Conditioning, Heat Supply and Building Physics. 2009;1:10-16. Available from: http://www.abok.ru/for_spec/articles.php?nid=4210 [Accessed 15th December 2023]. (In Russ.).

3. Gagarin V.G. Methods for Economic Analysis of Increasing the Level of Thermal Protection of Building Envelopes. Part 2. AVOK: Ventilyatsiya, otoplenie konditsionirovanie vozdukha, teplosnabzhenie i stroitel'naya fizika = ABOK: Ventilation, Heating, Air Conditioning, Heat Supply and Building Physics. 2009;2:14-24. Available from: http://www.abok.ru/for_spec/articles.php?nid=4240 [Accessed 20th December 2023]. (In Russ.).

4. Gagarin V.G. Methods for Economic Analysis of Increasing the Level of Thermal Protection of Building Envelopes. Part 3. AVOK: Ventilyatsiya, otoplenie konditsionirovanie vozdukha, teplosnabzhenie i stroitel'naya fizika = ABOK: Ventilation, Heating, Air Conditioning, Heat Supply and Building Physics. 2009;3:62-69. Available from: http://www.abok.ru/for_spec/articles.php?nid=4281 [Accessed 13th January 2023]. (In Russ.).

5. Tabunshchikov Yu.A., Livchak V.I., Gagarin V.G., Shilkin N.V. Ways to Improve the Energy Efficiency of Existing Buildings. AVOK: Ventilyatsiya, otoplenie konditsionirovanie vozdukha, teplosnabzhenie i stroitel'naya fizika = ABOK: Ventilation, Heating, Air Conditioning, Heat Supply and Building Physics. 2009;5:38-48. Available from: http://www.abok.ru/for_spec/articles.php?nid=4240 [Accessed 19th January 2023]. (In Russ.).

6. Samarin O.D., Bagrenina I.M., Kolesnikova O.A. Energy Efficiency of Public Buildings. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2011;1(109):112-115. (In Russ.). EDN: RFWXUR.

7. Egel'skaya D.V. Ways to Improve the Energy Efficiency of Buildings and Structures in Use. Nauka, obrazovanie i kul'tura = Science, Education and Culture. 2017;6(21):81-84. (In Russ.). EDN: YULYBT.

8. Shikhov A.N. Reconstruction of Buildings and Structures: a Course of Lectures. Perm: Publishing Printing Center "Prokrost"; 2016. 389 p. (In Russ.).

9. Bodrov M.V., Morozov M.S., Ruin A.E., Pylaev A.N. Features of the Overhaul of the Thermal Protection of the Walls of Residential Panel Multi-Apartment Serial Houses. Zhilishchnoe stroitel'stvo = Housing Construction. 2022;12:80-84. (In Russ.). https://doi.org/10.31659/0044-4472-2022-12-80-84. EDN: FBFTSF.

10. Samarin O.D., Kirushok D.A. Selection of Thermal Protection for Fences Taking into Account Their Heterogeneity. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2015;2(158):36-39. (In Russ.). EDN: XCOBSL.

11. Malyavina E.G. Revealing of Economic Reasonability of Heat Insulation of Three-Storey Building’sexternal Enclosing Structures. Zhilishchnoe stroitel'stvo = Housing Construction. 2016;6:13-15. (In Russ.). EDN: WFAXGX.

12. Malyavina E.G., Frolova A.A. The Choice of Economically Feasible Thermal Protection of Buildings in the North of the Russian Federation. Zhilishchnoe stroitel'stvo = Housing Construction. 2022;12:72-78. (In Russ.). https://doi.org/10.31659/0044-4472-2022-12-72-78. EDN: NMLVMK.

13. Dmitriev A.N., Tabunshchikov Yu.A., Kovalev I.N., Shilkin N.V. Guidelines for Assessing the Economic Efficiency of Investments in Energy-Saving Measures. Moscow: ABOK-Press; 2005. 120 p. (In Russ.).

14. Prozuments A., Borodinecs A., Odineca T., Nemova D. Long-Term Buildings’ Space Heating Estimation Method. In: PROCEEDINGS OF EECE 2019. Energy, Environmental and Construction Engineering. 19-20th November 2019, St. Petersburg. St. Petersburg, 2020. P. 539–550. https://doi.org/10.1007/978-3-030-42351-3_47. EDN: DESPLS.

15. Fedorov S.S., Klyueva N.V. Control Over the System of Single-Circuit Heat Supply of Buildings and Structures at Dependent Connection to Heating Networks. Promyshlennoe i grazhdanskoe stroitel 'stvo = Industrial and Civil Engineering. 2016;3:76-79. (In Russ.). EDN: VSEOGL.

16. Stenin V.A. On the Issue of Regulating the Heat Supply System. Aktual'nye problemy gumanitarnykh i estestvennykh nauk = Current problems in the humanities and natural sciences. 2018;2-2:30-33. (In Russ.). EDN: YNIOTX.

17. Gol'tsov A.B. Setting Up and Adjusting Water Heating Systems. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2018;8(200):45-62. (In Russ.). EDN: DFQDBC.

18. Pukhkal V.A. The Analysis of Heat Consumption Modes in Serviced Residential Buildings. Fundamental'nye issledovaniya = Fundamental Research. 2017;1:106-111. (In Russ.). EDN: XVLQUX.

19. Datsyuk T.A., Grimitlin A.M., Anshukova E.A. Assessment of Energy Efficiency Indicators of Buildings. Vestnik grazhdanskikh inzhenerov = Bulletin of Civil Engineers. 2018;5(70):141–145. (In Russ.). https://doi.org/10.23968/1999-5571-2018-15-5-141-145. EDN: VOMAMA.

20. Livchak V.I. On the Experimental Assessment of the Energy Efficiency Indicator of Multi-Apartment Buildings. Energosberezhenie = Energy saving. 2018;5:32-37. EDN: XTFCNF.

21. Livchak V.I. Actual Heat Consumption of Buildings as an Indicator of Design Quality and Reliability. AVOK: Ventilyatsiya, otoplenie konditsionirovanie vozdukha, teplosnabzhenie i stroitel'naya fizika = ABOK: Ventilation, Heating, Air Conditioning, Heat Supply and Building Physics. 2009;2:4-14. Available from: https://www.abok.ru/for_spec/articles.php?nid=4239&ysclid=lstwzqeg93853255527 [Accessed 15th January 2023]. (In Russ.).

22. Pukhkal V.A., Shkarovskiy A.L., Chernenkov V.P., Kobzar A.V. Heat Consumption in Residential Buildings for Heating and Ventilation During Operation. Vestnik grazhdanskikh inzhenerov = Bulletin of Civil Engineers. 2023;1(96):103-110. (In Russ.). https://doi.org/10.23968/1999-5571-2023-20-1-103-110. EDN: VABXVT.

23. Livchak V.I. The Russian Ministry of Construction Continues to Thwart the Decisions of the Government of the Russian Federation and Federal Law No. 261-FZ. Part 1. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2020;10(226):50-57. (In Russ.). EDN: UZPACM.

24. Livchak V.I. The New Edition of SP 60.13330.2020 Does Not Allow Correctly Calculating the Heat Load and Annual Heat Consumption of the Building Heating System. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2021;11(239):64-73. (In Russ.). EDN: FHAKXW.

25. Livchak V.I. Methodology for Calculating Schedules for Regulating Heat Supply to the Heating System. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2022;1(241):86-92. (In Russ.). EDN: CGYVUE.

26. Livchak V.I. Proposals for the Implementation of Increasing the Energy Efficiency of Housing and Communal Services Buildings in Russia Contrary to the Actions of the Ministry of Construction and the Ministry of Economic Development. Inzhenernye sistemy = Engineering systems. 2021;1:24-33. Available from: https://is- guru.ru/arhiv/18013-%E2%84%961-2021/?ysclid=lstpefhbhy962899175 [Accessed 24th November 2023]. (In Russ.).

27. Livchak V.I. Proposals for Standardizing Requirements for Increasing the Energy Efficiency of New Construction Buildings and Housing Stock in Russia. Energosberezhenie = Energy saving. 2021;7:20-28. Available from: https://www.abok.ru/for_spec/articles.php?nid=7949 [Accessed 24th November 2023]. (In Russ.).

28. Gasho E.G., Fokin A.M. Analysis of The Dependence of Thermal Energy Spent On Heating and Cooling of Buildings on Various Factors. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2022;2(242):64-67. (In Russ.). EDN: WPVLLM.

29. Volkov V.A., Tseplyaeva E.V. Block Individual Heating Points. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2022;10(250):28-33. (In Russ.). EDN: DYHTDR.

30. Brukh S.V. Reconstruction of Engineering Systems of Existing Residential Buildings in Germany. Santekhnika, otoplenie, konditsionirovanie = Plumbing. Heating. Conditioning. Energy Efficiency. 2022;7(247):38-42. (In Russ.). EDN: HYUKPT.