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- 2011. - P. 2407-2418. Benonysson A., Bøhm B., Ravn, H. F. Operational optimization in a district heating system, Energy Conversion and Management, Heating and Air Conditioning, Technical University of Denmark, DK-2800 Lyngby, Denmark - 2000. - P. 297-314 Madsen, H., Sejling, K., Søgaard, H. T., Pallson, O. P. On flow and supply temperature control in district heating systems, The Institute of Mathematical Statistics and Operations Research, The Technical University of Denmark, DK-2800 Lyngby, Denmark - 2003.- P. 613-620 Keçebaş, A., Alkan, M. A., Bayhan, M. Thermo

-99. [11] OSHA (2018, Jan 11), Occupational Safety and Health Administration, Technical Manual, Section III, Chapter 7, “Optimum analysis of energy conversion for solar water heating system legionnaires' disease”, available: https://www.osha.gov/dts/osta/otm/otm_iii/otm_iii_7.html . [12] Mathys (2008). Occurrence of Legionella in hot water systems of single-family residences in suburbs of two German cities with special reference to solar and district heating. Int. J. Hyg. Environ. Health. 2008;211:179–185: doi.org/10.1016/j.ijheh.2007.02.004 [13] Knapp, S. & Nordell, B

Abstract

Rational and efficient use of thermal energy in recent years has resulted in significant changes in the heating system as well as technological progress. In order to design a heating system properly and exploit it correctly, an in-depth understanding of the hydraulic issues is necessary. Application of automatic control system in various sectors of heating network has resulted in a more dynamic and efficient work of the whole system. For proper operation of a thermal system it is also necessary to compile a correct heat balance and a regulation graph that allows to determine the optimal mass and parameters of heat medium. The article discusses the problems of supplying heat process, types of thermal systems and selected problems of hydraulic issues that occur in the heating networks.

References [1] Cihelka et al. (1985). Heating, Ventilation and Air Conditioning . Praha: SNTL. [2] STN EN ISO 13 790 Thermal performance of buildings. Calculation of energy needs for heating. National Annex. Slovakia. [3] STN EN 12 831 Heating systems in buildings. The method of calculating the projected heat input. National Annex. Slovakia. [4] STN 73 0540 Thermal performance of building structures and buildings. Thermal protection of buildings. Slovakia. [5] Principle Investment. http://www.fpv.umb.sk [6] http://new.ilava.sk/library/files/ [7] www.herz.sk, www

. Camuffo, D., Pagan, E., Schellen, H. & Limpens-Neilen, D., 2014. A practical guide to the pros and cons of the various heating systems with a view to the conservation of the Cultural Heritage in Churches . Results of the European Project Friendly Heating EVK4-CT-2001-00067, s.l.: s.n. Camuffo, D., Pagan, E., Rissanen S, Bratasz L., 2010, An advancedchurch heating system favourable to artworks, Journal of Cultural Heritage 11 (2), pp.2015-219. Carstolovean, I.L., Hornet M., Ancas A.D., Profire M., 2018, Air Exchange Rate in Air Quality Assurance – A Case Study

References Bratasz L., Kozlowski, R., Camuffo D., Pagan E., 2007: Impact of indoor heating on painted wood: Monitoring the altarpiece in the church of Santa Maria Magdalena in Rocca Pietore , Italy. Stud. Conserv., 52, pp.199–210. Camuffo, D., Pagan, E., Schellen, H. & Limpens-Neilen, D., 2014. A practical guide to the pros and cons of the various heating systems with a view to the conservation of the Cultural Heritage in Churches . Results of the European Project Friendly Heating EVK4-CT-2001-00067, s.l.: s.n. Camuffo, D., Pagan, E., Rissanen S, Bratasz L

://ens.dk/sites/ens.dk/files/energistyrelsen/Nyheder/district_heating_danish-chinese_experiences.pdf [27] Zhang L., Gudmundsson O., Li H., Svendsen S. Comparison of District Heating Systems Used in China and Denmark. International Journal of Sustainable and Green Energy 2015:4(3):102–116. [28] Resolution of the Government of the RF of 13.02.2006 No.83 (ed. of 23.08.2014). On the approval of rules for the determining and providing technical conditions for the connection of a capital construction object to the engineering and technical services, and rules of connecting a capital construction object to the networks of engineering and technical services. Moscow. (in

Abstract

The paper presents the possibilities of increasing energy efficiency of sacral buildings. Churches in the Zawiercie pastoral district of the Archdiocese of Czestochowa have been used as examples of typical sacral buildings of low energy efficiency. Such structures need to be thermally insulated during their use. Certain possibilities of raising the energy efficiency of churches have been presented. The paper describes different systems: increasing of wall and roof insulation, installation of new windows, and modern heating systems. Installation of a new heating system has been considered the most effective and the easiest to be implemented one.

REFERENCES Andreas, U. – Winter, A. – Wolff, D. (1985) Regelung Heiztechnischer Anlagen (Devices for the control of heating systems), VDI-Verlag, Düsseldorf, 1985. ISBN 318 400 6905. Bašta, J. (2003) Hydraulika a řízení otopných soustav . (Hydraulics and control of heating systems) ČVUT, Prague, 2003. ISBN 80-01-02808-9. Burkhardt, W. – Kraus, R. (2006) Projektierung von Warmwasserheizungen . (Design of water-based heating systems) 7. Auflage. Oldenburg Industrieverlag, Munich, 2006. Pekarovič, J. K. Petráš, D. – Lulkovičová, O. – Takács, J. (1994) Vykurovanie

:10.1016/j.apenergy.2010.03.018 [8] Morvaj B., Evins R., Carmeliet J. Decarbonizing the electricity grid: the impact on urban energy systems, distribution grids and district heating potential. Applied Energy 2017:191:125–140. doi:10.1016/j.apenergy.2017.01.058 [9] Mauthner F, Weiss W, Spork-Dür M. Solar heat worldwide. Markets and € contribution to the energy supply 2013. Institute for Sustainable Technologies, 2015. [10] European solar district heating system database [Online]. [Accessed 15.03.2019]. Available: http