Mathematical modelling of the steady state heat transfer processes in the convectional elements of passive solar heating systems

Piotrowski, Jerzy Zbigniew; Stroy, A.; Olenets, M.

doi:10.1016/j.acme.2013.02.002

Cited by 13 publications

(8 citation statements)

References 8 publications

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“…The recorded change was only 0.5 kg /dm 3 on average. Bulk density level for bricks with 90 wt% QS was around 1.7 kg/dm 3 , and for bricks with GS was 1.6-1.65 kg/dm 3 (Figure 9). [46].…”

Section: Physical and Mechanical Properties Research And Prediction mentioning

confidence: 98%

“…Many solutions propose approaches in which they focus on the reduction of heat loss from buildings. Sustainable construction is also considering paths leading to the reduction of the depletion of natural resources through e.g., the use of passive systems in buildings [3][4][5][6][7]. Mainly concrete and monolithic construction is the most commonly used building method in the world [8,9].…”

Section: Introductionmentioning

confidence: 99%

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The Role of Glass Compounds in Autoclaved Bricks

et al. 2020

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This study describes the relationship between the physio-mechanical and chemical properties of sand-lime materials which have undergone hydrothermal treatment, and which were modified through the introduction of glass components (90% glass sand, GS). Process parameters such as temperature, pressure and saturation vapor pressure were found to have a significant impact on the series of chemical reactions as well as on the formation and transformation of solid hydrates. During the stirring process of sand-lime mass, the temperature of the reaction between lime and water in the presence of quartz sand (QS) was determined to be 83 °C. In the presence of glass sand, measured temperature was only 42 °C. Thermodynamic equilibrium-based modelling was applied to predict stable phase assemblages in the studied systems. It was found that compositional modification along with the application of the autoclaving process resulted in the formation of two crystalline phases: natrolite and gyrolite. Compressive strength and density were also assessed. The strength of fresh laboratory samples was found to be greater than their traditional analogues by 15 MPa. In addition to experimental characterization, sand-lime materials were also modeled using neural networks (backpropagation neural network, BPNN) which serve as a universal approximation method capable of modelling complex functions.

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“…The recorded change was only 0.5 kg /dm 3 on average. Bulk density level for bricks with 90 wt% QS was around 1.7 kg/dm 3 , and for bricks with GS was 1.6-1.65 kg/dm 3 (Figure 9). [46].…”

Section: Physical and Mechanical Properties Research And Prediction mentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

The Role of Glass Compounds in Autoclaved Bricks

et al. 2020

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“…Sufficiently detailed mathematical modeling of the heat transfer in the ventilated air gap of passive solar heating systems is considered in [18]. The mathematical modeling of the heat transfer in the air gap of a passive solar heating system with a venetian blind installed is also considered in this source.…”

Section: Page 4 Of 21mentioning

confidence: 99%

“…The mathematical model (1) [18] was used in order to analyze the heat transfer and air movement in a conventional Trombe wall.…”

Section: Air Movement and Heat Transfer In The Ventilated Air Gap Of mentioning

confidence: 99%