ВОДОГРІЙНІ КОНДЕНСАЦІЙНІ ТЕПЛОУТИЛІЗАТОРИ ІЗ ЗАСТОСУВАННЯМ НАНОКОМПОЗИЦІЙНИХ МАТЕРІАЛІВ ДЛЯ ГАЗОСПОЖИВАЛЬНИХ ОПАЛЮВАЛЬНИХ КОТЛІВ
| Autor: | S. I. Shevchuk, Nataliia Fialko, Raisa Navrodska, R. V. Dinzhos |
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| Rok vydání: | 2018 |
| Předmět: |
теплоутилізаційні технології
глибоке охолодження відхідних газів полімерні мікро- і нанокомпозити теплофізичні властивості ефективність Materials science Alloy steel Boiler (power generation) chemistry.chemical_element engineering.material Heat capacity Thermal conductivity chemistry Aluminium Heat recovery ventilation Heat exchanger Heat transfer engineering lcsh:SD1-669.5 General Earth and Planetary Sciences lcsh:Forestry Composite material General Environmental Science |
| Zdroj: | Науковий вісник НЛТУ України, Vol 28, Iss 2, Pp 124-128 (2018) |
| ISSN: | 2519-2477 1994-7836 |
| Popis: | The authors have presented the results of research on the efficiency of using gas-consuming heating boiler plants in deep heat recovery technologies with deep cooling of their waste gases of water-heating heat recovery equipment of various types. When carrying out the research, the traditionally used equipment was considered, the heat exchange surfaces of which consisted of bundles of smooth and cross-cut pipes of two types. In one of these types, bimetallic pipes (with a steel base and aluminium fins) were used, in the other flat-oval pipes with plate-shaped rectangular finning. As the surface material for these flat-oval pipes and smooth-tube bundles, alloy steel was used. The authors suggest using polymer micro- and nanocomposites as a material for the heat exchange surface for water heat recovery. In this case, these surfaces should be composed of bundles of smooth tubes. During the research for different operating modes of boiler plants during the heating period, such basic relative characteristics of these surfaces were determined, such as thermal permeability per unit mass of this surface and its volume per unit of heat capacity. A comparative analysis of these characteristics is made when using traditional heat exchange surfaces and surfaces made of polymeric micro- and nanocomposites with different heat conductivity coefficients for water heat recovery heaters. The value of the working temperatures of the heat transfer surface from micro- and nanocomposites is determined by its polymer matrix, and by the thermal conductivity the necessary composition of polymer fillers, which can be aluminium microparticles or carbon nanotubes. Thus, we have shown that in order to heat boiler plants, the hot-water heat recovery equipment of these nanocomposite materials by specific heat output has significant advantages over traditional analogues of this purpose. |
| Databáze: | OpenAIRE |
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