IMPROVING THE EFFICIENCY OF THE HEATING SYSTEM FOR PUBLIC BUILDINGS INFRASTRUCTURE IN THE CONTEXT OF DNURT
Keywords:heat and hot water supply system, heat loss, thermal conditions, thermal control, heat exchanger, ventilation, alternative energy sources, secondary energy resources, heat pump
Purpose. The paper analyses the possibility and terms of increasing the efficiency of heating and ventilation systems of public buildings at the present stage of development and the specific climatic conditions of Ukraine. The main purpose is to develop specific measures for public buildings, which will lead to a significant reduction in energy costs for heating and air conditioning system. The example is similar system of DNURT compact campus, which is heated with its own autonomous boiler that uses natural gas. Methodology. The statistical heat loss analysis for the last 5 years allows defining the types and calculating the heat loss values for specific conditions. These losses are compared with those in the world practice and based on the comparison and analysis of the current system there are offered the ways to reduce the heat loss values through the use of various technical and organizational methods.The paper also proposes involvement for this purpose of secondary and alternative energy sources. The secondary energy resources include the heat that is emitted by people and that coming out with the air during ventilation of buildings. The renewable sources include solar and geothermal energy. To enhance the heat transfer medium temperature capacity it is proposed to use the heat pumps. Findings. The maximum possible use of the proposed measures and implementation of rational schematic and engineering solutions for heat and hot water supply systems cam reduce the energy loss for heating and hot water by 30-35%. Originality. The paper for the first time proposed the use of new integrated approaches to maintain the desired heat balance in the winter period, as well as the new schematic solutions for heating and ventilation systems, both in winter and in summer, based on the use of heat pumps and secondary energy resources. Practical value. The introduction of the proposed schematic solutions and approaches demand relatively small capital investments and do not require significant reconstruction of already installed systems.
Pshinko O.M., Yatsenko D.K., Kuznietsov V.H., Shaptala M.V. Analiz vprovadzhennia enerhozberihaiuchykh zakhodiv v universyteti [Analysis of energy efficiency measures in the university]. Visnyk Kyivskoho natsionalnoho universytetu tekhnolohii ta dyzainu [Bulletin of Kyiv National University of Technologies and Design], 2013, no. 6 (74), pp. 344-352.
Hershkovych V.F., Lytovchenko A.K. Otsinka efektyvnosti vykorystannia v teplovomu nasosi tepla iz zvorotnoho truboprovodu teplovoi merezhi pry teplopostachanni vid TETs [Evaluating the effectiveness of the heat use in the heat pump from the return pipe of heating network with heat supply from CHP]. Novyny teplopostachannia – News of Heating, 2011, no. 1 (125), pp. 35-37.
DSTU 4472-2005. Systemy enerhetychnoho menedzhmentu. Zahalni vymohy [State Standard 4472-2005. Energy management systems. General requirements.]. Kyiv, Derzhstandart Ukrainy Publ., 2005. 28 p.
Kuznietsov V.H., Polovnykov V.Yu., Tsyhankova Yu.S. Ekspres-otsinka teplovykh vtrat u merezhakh teplopostachannia [Rapid assessment of thermal losses in heating networks]. Novyny teplopostachannia – News of Heating, 2012, no. 11 (47), pp. 33–35.
Pshinko O.M., Kuznietsov V.H., Shaptala M.V., Shaptala D.Ye. Metodyka vyznachennia obsiahiv spozhyvannia elektrychnoi enerhii ta teploty naukovymy pidrozdilamy universytetu [Consumption volumes technology of electricity and heat by departments of university]. Nauka ta prohres transportu – Science and Transport Progress, 2015, no. 1 (55), pp. 15-22. doi: 10.15802/stp2015/38235.
Nikitin Ye.Ye. Kontseptualnyye voprosy modernizatsii teploobespecheniya naselennykh punktov Ukrainy [Conceptual problems of modernization of heating settlements in Ukraine]. Problemy zahalnoi enerhetyky [Problems of Common Energy]. Kyiv, 2012, issue 2, pp. 5-11.
Nikitin Ye.Ye., Dutka A.V. Otsenka tekhniko-ekonomicheskoy effektivnosti kompleksnoy termomodernizatsii tsentralizovannoy sistemy teplosnabzheniya i zdaniy [Estimation of technical and economic efficiency of the integrated thermo-centralized heating systems and buildings]. Energetika i TEK – Energy and FEC, 2013, no. 9 (126), pp. 22-26.
Deshko V.I., Shovkoliuk M.M., Shovkoliuk Yu.V., Dudnikov S.M. Pokaznyky efektyvnosti system teplopostachannia [Performance indicators of heating systems]. Ventyliatsiia, osvitlennia ta teplohazopostachannia: naukovo-tekhnichnyi zbirnyk [Ventilation, lighting and heat: Scientific and technical papers], 2012, issue 16, pp. 182-192.
Pshinko O.M., Habrinets V.A., Horiachkin V.M. Analiz efektyvnosti systemy teplopostachannia studmistechka Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transport [Effectiveness analysis of campus heat supply system of Dnipropetrovsk National University of Railway Transport]. Nauka ta prohres transportu – Science and Transport Progress, 2014, no. 2 (50), pp.74-82. doi: 10.15802/stp2014/23756.
Behfard M., Sohankar A. Numerical investigation for finding the appropriate design parameters of a fin-and-tube heat exchanger with delta-winglet vortex generators. Heat and Mass Transfer, 2016, vol. 52, issue 1, pp. 21-37. doi: 10.1007/s00231-015-1705-1.
Turner W. C. Energy management handbook, the 4th ed. Lilburn, Georgia. The Fairmout Press, Inc. Publ., 2001. 758 p.
Khashe S., Heydarian A., Gerber B. B., Wood W. Exploring the effectiveness of social messages on promoting energy conservation behavior in buildings. Building and Environment, 2016, vol. 102, pp. 83-94. doi: 10.1016/j.buildenv.2016.03.019.
Heat Roadmap Europe 2050. Study for the EU27. Perfomed by Aalborg University, Halmstad University and Plan Energy. Available at: http://www.euroheat.org (Accessed 19 May 2016).
Mert S.O., Reis A. Experimental performance investigation of a shell and tube heat exchanger by exergy based sensitivity analysis. Heat and Mass Transfer, 2015, vol. 52, issue 6, pp. 1117-1123. doi: 10.1007/s00231-015-1636-x.
How to Cite
Copyright (c) 2021 O. M. Pshinko, V. H. Kuznetsov, D. K. Yatsenko, V. O. Gabrinets
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright and Licensing
This journal provides open access to all of its content.
As such, copyright for articles published in this journal is retained by the authors, under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0). The CC BY license permits commercial and non-commercial reuse. Such access is associated with increased readership and increased citation of an author's work. For more information on this approach, see the Public Knowledge Project, the Directory of Open Access Journals, or the Budapest Open Access Initiative.
The CC BY 4.0 license allows users to copy, distribute and adapt the work in any way, provided that they properly point to the author. Therefore, the editorial board of the journal does not prevent from placing published materials in third-party repositories. In order to protect manuscripts from misappropriation by unscrupulous authors, reference should be made to the original version of the work.