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RESEARCH OF BUILDING MATERIALS

SOLUTION TO THE BOUNDARY PROBLEM OF HEAT AND WATER TRANSMISSION IN A LAYER OF A LOOSE DISPERSE MATERIAL EXEMPLIFIED BY MILLED PEAT EXPOSED TO INFRARED HEATING

Vestnik MGSU 6/2012
  • Pavlov Mikhail Vasil'evich - Vologda State Technical University (VoSTU) Senior Lecturer, Department of Heat, Supply and Ventilation, Vologda State Technical University (VoSTU), 15 Lenina st., Vologda, 160000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Karpov Denis Fedorovich - Vologda State Technical University» (VoSTU) Senior Lecturer, Department of Heat/Gas Supply and Ventilation, Vologda State Technical University» (VoSTU), 15 Lenin st., Vologda, 160000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sinitsyn Anton Alexandrovich - Vologda State Technical University (VoSTU) Candidate of Technical Sciences, Associated Professor, Department of Heat, Supply and Ventilation, Vologda State Technical University (VoSTU), 5 Lenina st., Vologda, 160000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 92 - 98

Maintenance of appropriate thermal and humidity modes of soil is the main condition of intensive growth and development of plants. It is feasible in the event that the temperature and humidity patterns of the soil environment can be projected in time and registered at different depths. Towards this end, the author proposes three alternative solutions to the boundary problem of heat and water transmission in a layer of a loose disperse material exemplified by milled peat. Each solution is based on the operation of a source of infrared radiation. The research results are benchmarked against the experimental data, and thereafter, the list of optimal solutions and substantiations is composed.

DOI: 10.22227/1997-0935.2012.6.92 - 98

References
  1. Mikhaylov Yu.A., Glazunov Yu.T. Variatsionnye metody v teorii nelineynogo teplo- i massoperenosa [Variation Methods in the Theory of Nonlinear Heat and Mass Transfer]. Riga, Zinatne Publ., 1985, 190 p.
  2. Lykov A.V. Teplomassoobmen [Heat and Mass Exchange]. Moscow, Energiya Publ., 1972, 560 p.
  3. Lykov A.V., Mikhailov J.A. Teorija perenosa jenergii i veshchestva [Theory of Energy and Substance Transfer]. Minsk, AN BSSR Publ., 1963, 332 p.
  4. Tsoy P.V. Metody rascheta otdel’nyh zadach teplomassoperenosa [Methods of Resolution of Particular Problems of Heat and Mass Transfer]. Moscow, Energiya Publ., 1971, 384 p.
  5. Igonin V.I., Pavlov M.V., Karpov D.F., Ivanov M.I. Eksperimental’no-raschetnoe opredelenie temperaturoprovodnosti i teploprovodnosti frezernogo torfa metodom mgnovennoy plastiny [Experimental and Analytical Identification of Temperature and Thermal Conductivity of Milled Peat through the Employment of an Instant Plate Method]. Vuzovskaya nauka — regionu [High School Science: Contributions to Regions]. Proceedings of the ninth All-Russian scientific and technical conference. Vologda, VoSTU, 2011, vol. 1, pp. 166—170.

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EXPERIMENTAL RESEARCH OF THE THERMAL BALANCE OF LOOSE DISPERSE MATERIALS EXEMPLIFIED BY MILLED PEAT EXPOSED TO INFRARED HEATING

Vestnik MGSU 5/2012
  • Pavlov Mikhail Vasil'evich - Vologda State Technical University (VoSTU) Senior Lecturer, Department of Heat, Supply and Ventilation, Vologda State Technical University (VoSTU), 15 Lenina st., Vologda, 160000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Karpov Denis Fedorovich - Vologda State Technical University» (VoSTU) Senior Lecturer, Department of Heat/Gas Supply and Ventilation, Vologda State Technical University» (VoSTU), 15 Lenin st., Vologda, 160000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sinitsyn Anton Alexandrovich - Vologda State Technical University (VoSTU) Candidate of Technical Sciences, Associated Professor, Department of Heat, Supply and Ventilation, Vologda State Technical University (VoSTU), 5 Lenina st., Vologda, 160000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 114 - 119

Good knowledge of thermal balance is a prerequisite of successful mastering of the processes of heat and water transfer within a body. Given the reflective power of the substance surface under consideration, the analysis of the thermal balance of a loose disperse material was performed. A sample of milled peat served as the loose disperse material exposed to infrared heating. The practical results were compared to those available in the literature.
One of the key results of the experiment represents identification of the radiation balance of the substance. Further research of the heat accumulation capacity rad will make it possible to identify the boundary conditions (energy and mass at the body boundary) required to formulate and solve the boundary problem of thermal and moisture transfer. The latter will make it possible to project and to manage the thermal and moisture mode of materials in terms of timing and depth subject to thermal processes underway on their surface

DOI: 10.22227/1997-0935.2012.5.114 - 119

References
  1. Chudnovsky A.F. Fizika teploobmena v pochve [Physics of Heat Exchange in the Soil]. Leningrad - Moscow, State Publishing House of Theoretical Technical Literature, 1948, 220 p.
  2. Lykov A.V. Yavleniya perenosa v kapillyarno-poristykh telakh [Phenomena of Transfer in Capillary-Porous Bodies]. Moscow, State Publishing House of Theoretical Technical Literature, 1954, 296 p.
  3. Hanks R.J., Ashcroft G.L. Prikladnaya fizika pochv. Temperatura i vlazhnost’ pochvy [Applied Soil Physics. Soil Water and Temperature. Leningrad, Gidrometeoizdat Publ., 1985, 151 p.
  4. Sheyin E.V. Kurs fiziki pochv [Course of Physics of Soils]. Moscow, Moscow State University Publ., 2005, 432 p.
  5. Antonov V.Ya., Malkov L.M., Gamayunov N.I. Tekhnologiya polevoy sushki torfa [Technology of Field Dehydration of Peat]. Moscow, Nedra Publ., 1981, 239 p.
  6. Korenova T.S., Musekaev D.A., Skrynnikova I.N., edited by A.E. Bykovsky. Rekul’tivatsiya vyrabotannyh torfyanykh mestorozhdeniy (biologicheskiy etap) dlya sel’skohozyaystvennogo ispol’zovaniya v tsentral’nom ekonomicheskom rayone RSFSR [Restoration of Exhausted Peat Deposits (Biological Stage) for Agricultural Use in the Central Economic Region of the Russian Soviet Federal Socialist Republic]. Moscow, Rossel’khozizdat Publ., 1987. 33 p.

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