DEVELOPMENT OF CRITERIA OF CHARGE AND DISCHARGE EFFICIENCY OF SOLID STATE OF HEAT ACCUMULATOR
DOI:
https://doi.org/10.15802/stp2014/29945Keywords:
solid-state heat accumulator, solid storage material, charge efficiency, discharge efficiency, similarity theory, dimensional analysis, similarity criterionAbstract
Purpose. Development of similarity criteria for different modes of operation of the solid-state heat accumulator working due to accumulation of heat in the volume of the heat storage material without phase transition, and the creation of systematic criteria of heat accumulator efficiency for determination the weight / size parameters and operating modes at the design stage. Methodology. To achieve the objectives of the study the theory of similarity and dimensional analysis were used as well as planning and carrying out techniques of physical experiments. Findings. Based on the theory of similarity and dimensional analysis similarity criteria operation of solid-state heat accumulators, under given basic parameters were obtained. These are performance criteria for charge, discharge and full criterion. Three theorems of similarity theory in application to the solution of engineering problems were used. The criterion of efficiency of the heat accumulator charge characterizes the effectiveness of achieving the specified value of the specific amount of heat in the material of heat accumulator under charge, under received materials, geometrical ratios, and heat flow of the heat input. The efficiency criterion characterizes the discharge efficiency of the heat accumulator, at the accepted materials; mass of heat-retainer and the total accumulated amount of heat when the value of the heat flow and the time of discharge. Full coefficient of the heat accumulator performance characterizes the efficiency of the heat accumulators for a full cycle. Originality. Accordingly to the analysis the implementation of any system of solid-state heat accumulator is possible on the basis of structural schemes of this type of device. The similarity criteria of the efficiency of the charge, the efficiency of discharge and the full criterion of solid-state heat accumulators’ efficiency based on the solid storage material without phase transition were obtained. Practical value. Criteria presented in this work are of a comparative nature. In accordance with the obtained criteria we can compare designed and existing heat accumulators that are similar to structures. Feasibility analysis indicates that the proposed assessment methodology of solid-state heat accumulators’ efficiency in different modes of operation is effective, technically feasible and allows determining the weight / size parameters and modes of operation of the solid-state heat accumulator at the design stage.
References
Vasilyev L.L., Boldak I.M., Domorod L.S., Shirokov Ye.I. Teplovoy akkumulyator [Heat accumulator]. A.s.1746151 SSSR, no. 4800461/06, 1992.
Bielimenko S.S. Elektroteploakumuliatsiini nahrivachi: shliakh do enerhonezalezhnosti Ukrainy [Electro-thermal and accumulative heaters is a way to nonvolatility of Ukraine]. Pratsi instytutu elektrodynamiky NAN [Proc. of The Institue of Electrodinamics of the National Academy of Sciences in Ukraine], 2006, a special issue, pp.80-83.
Bielimenko S.S. Systemy opaliuvannia teplo akumuliatsiinymy nahrivachamy [Heating systems with thermal energy storage heaters]. Ekoinform − Ecoinform, 2011, no. 6, pp.18-19.
Braun E.D., Yevdokymov Yu.A., Chichinadze A.V. Modelirovaniye treniya i iznashivaniya v mashinakh [Simulation of friction and wear in machines]. Moscow, Mashinostroyeniye Publ., 1982. 191 p.
Venikov V.A. Teoriya podobiya i modelirovaniye primenitelno k zadacham elektroenergetiki [Similarity theory and simulation as applied to problems of electricity]. Moscow, 1966. 182 p.
Habrynets V.O., Khrystian Ye.V., Tytarenko I.V. Shliakhy pidvyshchennia efektyvnosti enerhetychnykh pidrozdiliv zaliznychnoho transportu [Ways to improve the efficiency of energy units of railway transport]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2012, issue 41, pp. 187-190.
Druzhinin P.V., Korichev A.A., Kosenkov I.A. Matematycheskaya model protsessa razryadky teplovogo akkumulyatora fazovogo perekhoda [A mathematical model of the heat accumulator discharge process of phase transition]. Tekhniko-tekhnologicheskiye problemy servisa – Technical and technological problems of service, 2009, no. 4. pp. 17-22.
Druzhinin P.V., Korichev A.A., Kosenkov I.A. Matematicheskaya model protsessa khraneniya teploty v teplovom akkumulyatore [A mathematical model of the heat storage process in the heat accumulator]. Tekhniko-tekhnologicheskiye problemy servisa – Technical and technological problems of service, 2009, no. 2. pp. 63-65.
Kahramanian A.O, Onyshchenko A.V. Otsinka ekonomichnoi efektyvnosti zastosuvannia prohrivu teplovoziv vid alternatyvnykh dzherel enerhii [Assessment of the economic efficiency of locomotives warm-up from alternative energy sources]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2010, issue 32, pp. 259-263.
Levenberh V.D., Tkach M.R., Holstrem V.A. Akkumulirovaniye tepla [Heat accumulation]. Kyiv, Tekhni-ka Publ., 1991. 315 p.
Lykov A.V. Teoriya teploprovodnosty [The theory of heat conduction]. Moscow, Vysshaya Shkola Publ., 1967. 600 p.
Bulychev V.V., Yemelyanov Ye.S., Zagryazkin V.N. Teplovoy akkumulyator fazovogo perekhoda [Heat storage of phase transition]. Patent RU, no. 93036725/06, 1997.
Reznitskiy L.A. Teplovyye akkumulyatory [Heat accumulators]. Moscow, Energoatomizdat Publ., 1996. 91 p.
Filippov L.P. Teoriya termodinamicheskogo podobiya [The theory of thermodynamic similarity]. Moscow, Izdatelstvo MGU Publ., 1985. 225 p.
Chichinadze A.V. Raschet i issledovaniye vneshnego treniya pri tormozhenii [Calculation and investigation of external friction during braking]. Moscow, Nauka Publ., 1967. 331p.
Lyu Q., Chen T., Wang H., Yu T., Li Q., Tang W. Analysis on peak-load regulation ability of cogeneration unit with heat accumulator. Automation of electric Power System, June 2014, vol. 38, issue 11, 10, pp. 34-41.
Taler D. Cisec P., Tokarzik J. Water-air ceramic heat accumulator heating system for building. Runek En-ergy, 2014, vol. 107, issue 6, pp. 71-76.
Downloads
Published
How to Cite
Issue
Section
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.
