Porous Thermal Insulation Materials on Organic and Mineral Fillers

Novosad, Petro; Pozniak, Oksana; Melnyk, Volodymyr M.; Braichenko, Serhii

doi:10.1007/978-3-030-27011-7_45

Cited by 12 publications

(2 citation statements)

References 7 publications

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“…It is necessary to mention than the primary similarity of the granulometric size of the fibers gives different average apparent densities and, as a result, different thermal conductivities. The difference in the straw surface is an essential detail that is important for the formation of the composition (Savitsky, N. V. et al, 2012;Novosad, Petro V., et al, 2019;Savytskyi, M., et al 2015).…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of Lightweight Concretes Based on Hemp and Flax Straw

Babenko

Estokova

Unčík

et al. 2022

Slovak Journal of Civil Engineering

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The article presents the results of a study involving the properties of flax and hemp-based lightweight concretes as well as the initial characteristics of different straw-based materials. A comparison of straw-based lightweight concretes with and without ordinary Portland cement (OPC) showed that hemp concrete has a 5.6 % higher strength at a 10% deformation, and at the same time, has a 13% greater thermal conductivity coefficient than flax concrete. The physical-chemical study based on a thermal analysis in an air environment has shown that the overall picture of thermal degradation for flax and hemp concretes is similar. Nevertheless, additional peaks of mass loss have been defined for flax concrete. The demonstrated exothermal process is a positive aspect, considering the life cycle of the material and the recycling stage. The paper proposes reference points for the development of new building materials based on straw.

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Section: Resultsmentioning

confidence: 99%

Comparative Study of Lightweight Concretes Based on Hemp and Flax Straw

Babenko

Estokova

Unčík

et al. 2022

Slovak Journal of Civil Engineering

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“…Microclimate of premise should be also improved due to energy saving measures of heat source [39], building walls [40,41], heating system [42 -44], ventilation system [45] and gas and heat supply systems [46,47]. It is advisable to use also exhaust air heat and recuperation [48,49] for energy saving.…”

Section: Introductionmentioning

confidence: 99%

Analysis of air jets velocity attenuation at special initial conditions

Voznyak¹,

Spodyniuk²,

Savchenko³

et al. 2022

Diagnostyka

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The article is devoted to solving the significant problem of efficiency increasing of air distribution in the premise by swirl air jet. The aim of the article is to decrease coefficient of velocity attenuation due to intensification of initial turbulence of different air streams leakage from the air distributor and to obtain of analytical equations for calculation of air distribution in a room to ensure the normative indoor air parameters. Effect of flow twisting results in a reduction of the velocity attenuation coefficient by 2.4 times. The regression analysis testified that the attenuation coefficient of the swirl air jet is more affected by the angle of the twisting plates inclination and less affected by the angle of change of the air flow direction. The attenuation coefficient of all types of rectangular air jets is more influenced by the the ratio of the sides of slit b/l and the angle of change of the air flow direction is also less affected. To minimize the attenuation factor, it is effective to use air distributors at smaller swivel plates inclination angles for swirl air jets and a smaller slit size ratio for all types of rectangular air jets.

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