Heat transfer and air movement in the ventilated air gap of passive solar heating systems with regulation of the heat supply

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

doi:10.1016/j.enbuild.2015.05.051

Cited by 27 publications

(6 citation statements)

References 15 publications

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“…Autoclaved sand-lime bricks are very popular in Poland, Germany, Spain, Slovakia, and other countries in Europe. These types of materials, commonly called "silicates products", are construction materials providing a solid structure and comfortable interior microclimate [9,10]. Modifications of sand-lime bricks aim at optimizing the production process and replacing the quartz sand with another component.…”

Section: Introductionmentioning

confidence: 99%

A Sustainable Autoclaved Material Made of Glass Sand

2019

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Far-reaching technological progress, manufacturing, and rapidly advancing globalization dictate new conditions for the development and changes in the construction industry. Valorization of by-products and the use of secondary materials in the production of building materials have attracted a lot of attention. Silicate materials were assessed on the basis of their compressive property. An orthogonal compositional plan type 3k (with k = 2), that is, a full two-factor experiment was applied in order to carry out the compressive strength and bulk density tests. Glass sand was added to the silicate mass as a modification. The results show that the compressive strength was higher than that of traditional bricks. Scanning electron microscopy coupled with energy dispersive spectrometry SEM/EDS was used to study the microstructure, whereas the XRD analysis was applied to examine the structures. Laboratory tests were performed on samples with dimensions of 50 × 50 × 50 mm. The results show the bulk density increase to the value of 1.75 kg/dm3, which increases the acoustic performance of the new products. The results of the modifications also indicate changes in the structure of the new bricks. The reference sample contained α-quartz, zeolite, tobermorite 9A, and calcium aluminum silicate (Ca2Al4Si12O32), whereas the samples modified with glass sand, the presence of phases such as α-cristobalite, natrolite, tobermorite 11A, gyrolite, and analcite was recorded.

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Section: Introductionmentioning

confidence: 99%

A Sustainable Autoclaved Material Made of Glass Sand

2019

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“…During the day the heated air from the air collectors naturally circulates into the gravel heating it, and cool air from the gravel passes into the collector. On this occasion the openings on the surface in the interior of the room are closed, which is the recommendation of the author [18]. During the night or winter, the lids in the room are open, so the warm air from the storage heats the living rooms (Fig.7a, detail 2).…”

Section: The Procedures Of Passive Solar Approachmentioning

confidence: 98%

Designing Energy Efficient and Ecological Solar House

Stošić¹,

Abuarkub²,

Šmelcerović³

et al. 2018

Applied Engineering Letters

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The goal of the paper is to represent the energy efficient activities on an ecological solar house and to improve its ecological solar compositionality. The subject of this paper is the optimization of energy consumption, insulation capacity, optimization of air and other parameters, all in view of reaching and improving energy efficiency and ecological aspect when designing solar passive houses. Having analysed micro and macro influences and taken into account the energy factors of a parcel of land, the structure is envisioned through the application of an indirect-passive approach, so as to have the passive solar structure simultaneously as a solar collector and heat storage, while the emphasis is put on an optimal, efficient and ecologically functional design. In order to make the process of construction of the ecological solar house a compatible and energy efficient one, constructing the structure with ecological materials is foreseen. In accordance with this, in this paper a representation of the design of the ecological solar house is provided, with the optimal use of solar energy and heat in focus.

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“…Several studies, using experimental setups and simulation models, have been developed to analyze different configurations of Trombe walls and to optimize their thermal behavior. New concepts emerged in regard to the massive wall's materials [16][17][18][19][20], the glazing type [14,[21][22][23], the ventilation system [14,[19][20][21][22][23][24][25][26] and the shading/occlusion devices [27,28]. Thermal insulation materials [29,30], phase change materials [31][32][33] and photovoltaic cells [15,[34][35][36][37][38] have also been considered as components for the system's improvement.…”

Section: An Overview Of the Trombe Wall Conceptmentioning

confidence: 99%

Influence of Air Vents Management on Trombe Wall Temperature Fluctuations: An Experimental Analysis under Real Climate Conditions

et al. 2021

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The Trombe wall is a passive solar system that can improve buildings energy efficiency. Despite the studies already developed in this field, more research is needed to assess the possibility of its integration in buildings avoiding user intervention. In this study, the influence of air vent management and materials’ heat storage capacity upon its thermal performance, particularly in the temperature fluctuation and indoor conditions, was discussed. Comparing two days with similar solar radiation (SR) for non-ventilated (NVTW) and ventilated (VTW) Trombe walls, a differential of 43 °C between the external surface temperature and the one in the middle of the massive wall was verified for NVTW, while for VTW this value was 27 °C, reflecting the heat transfer by air convection, which reduced greenhouse effect, solar absorption and heat storage. A cooling capacity greater than 50% was verified for VTW compared to NVTW during night periods. An algorithm for the Trombe wall’s automation and control was proposed considering SR as variable. Air vents and external shading devices should be open when SR exceeds 100 W/m2 and closed for 50 W/m2 to obtain at least 20 °C inside the room. Closing for 50 W/m2 and opening for values lower that 20 W/m2 is suggested for summer periods.

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Heat transfer and air movement in the ventilated air gap of passive solar heating systems with regulation of the heat supply

Cited by 27 publications

References 15 publications

A Sustainable Autoclaved Material Made of Glass Sand

A Sustainable Autoclaved Material Made of Glass Sand

Designing Energy Efficient and Ecological Solar House

Influence of Air Vents Management on Trombe Wall Temperature Fluctuations: An Experimental Analysis under Real Climate Conditions

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