The Thermographic Analysis of the Agglomeration Process in the Roller Press of Pillow-Shaped Briquettes

Uhryński, A.; Bembenek, Michał

doi:10.3390/ma15082870

Cited by 10 publications

(7 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…12. The value of the emissivity window glazing, ε = 0.88, in the spectral range operation of the thermal camera was determined on the basis [47,48] and [49,50]. In order to determine the surface temperature in the area not disturbed by the thermal bridge, the arithmetic mean of the line fragment for which the temperature stabilized on the glass surface was calculated.…”

Section: Experimental Analysismentioning

confidence: 99%

Experimental and Numerical Characterizataion of Thermal Bridges in Windows

Smusz¹,

Bałon²,

Kiełbasa³

et al. 2023

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

Actions aimed at improving the energy performance of buildings increase the share of heat loss through thermal bridges and windows in a building's energy balance. This is especially true of buildings currently under construction. In addition, it is known that the correct installation of windows is one of the biggest obstacles that must be overcome in order to achieve higher energy efficiency and reduce the impact of linear thermal bridges. Therefore, the study analysed, numerically and experimentally, the energy properties of PVC window frames with improved metal stiffening profiles, which were introduced to reduce the risk of window frame deformation and reduce leakage caused by faulty installation. The value of the frame thermal transmittance coefficient and the linear heat transfer coefficients were determined numerically. The simulation results showed that filling large air spaces with insulation material allowed for the reduction of the U f frame's thermal transmittance coefficient by over 10%. Moreover, where the window connects with the wall, there was a reduction in the linear thermal bridges' influence on heat losses. The reduction in the linear thermal transmittance coefficient Ψ was 9.6%, 1.0%, and 3.5% for the window sill, jamb, and lintel, respectively, compared to a frame without insulation. Moreover, experimental studies were conducted on the influence of the insulation of the PVC window frame with metal closed stiffening profiles on the linear thermal bridge located at the joint with the glass. It was found that the incidence factor I tb decreased by more than 6%. Thus, there is also a positive effect on the linear thermal bridge at the joint of the glass pane with the window frame.

show abstract

Section: Experimental Analysismentioning

confidence: 99%

Experimental and Numerical Characterizataion of Thermal Bridges in Windows

Smusz¹,

Bałon²,

Kiełbasa³

et al. 2023

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

show abstract

“…It was possible to transfer the briquette to the plywood pad directly after it was removed from the compaction unit, while maintaining precise control of the briquette topbottom, front-back orientation due to the low peripheral speed of the rollers (0.02 m/s). The tests of briquetting with the higher peripheral speed were unsuccessful due to the lack of possibility of controlled catching of the briquettes in the right orientation [47,48]. The images of the briquettes were captured in such a way that their 'top' (Fig.…”

Section: Thermography Testsmentioning

confidence: 99%

“…For each image in the vertical axis of the briquette at seven points, temperature values were read. The emissivity of the integrated materials was determined according to previously developed procedures [48] with the use the FLIR Thermal Studio program. Pilot batches of briquettes, from each of the mixtures, were prepared.…”

Section: Thermography Testsmentioning

confidence: 99%

“…The results presented in this article are a continuation of previous research published in the literature that present a simultaneous study of the temperature distribution and the compacting pressures in various compacting units of the roller press.". In previous works, the temperature distributions on the surface of classic saddle-shaped [47] and pillow-shaped briquettes [48] were presented. The tests presented in this article were carried out on four different mixtures of fine-grained materials in the innovative roller press compaction unit described by the PL 222229 B1 patent [49], in which the saddle-shaped cavities are distributed along the forming rollers.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Use of Thermography to Determine the Compaction of a Saddle-Shaped Briquette Produced in an Innovative Roller Press Compaction Unit

Bembenek

Uhryński

2022

Acta Mechanica Et Automatica

Self Cite

View full text Add to dashboard Cite

The unit compacting pressure in the fine-grained material consolidation process in the roller press can reach >100 MPa and is a parameter that results, among other things, from the properties of the consolidated material and the compaction unit geometry. Achieving the right pressure during briquetting is one of the factors that guarantee the proper consolidation and quality of briquettes. The distribution of the temperature on the surface of the briquettes correlates with locally exerted pressure. The present work aimed to analyse the briquetting process of four fine-grained materials in a roller press equipped with saddle-shaped briquette-forming rollers based on images obtained from the thermography conducted immediately after their consolidation. The tests were carried out in a roller press that was equipped with forming rollers of 450-mm diameter and having a cavity with a volume of 4 cm3, as described by patent PL 222229 B1. Two mixtures of hydrated lime with 9.1 wt% and 13.0 wt% water, a mixture of scale and a mixture of electric arc furnace (EAF) dust were used for the tests. In most mixtures, the highest temperatures were achieved in the middle-upper part of the briquettes. The briquettes from the EAF dust mixture heated locally the most on the surface up to 37.7 °C. The difference between the maximum briquette temperature and the ambient temperature was 20.2 °C.

show abstract

“…Management of biodegradable materials is based on two principal technologies: composting [9] and densification to solid fuel [10], if and as appropriate. In the latter case, reduction of energy consumption is ever more important [11] due to involvement of energy intensive processes of compression [12,13] and extrusion [14]. Carbon dioxide is an example of such waste materials.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Density Fields of Numerical Analysis Output of Solid Carbon Dioxide Extrusion Process

Górecki¹,

Lindner²,

Wałęsa³

2023

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

Efforts to reduce energy consumption and explore alternative energy sources are paramount in production process research. However, a research gap exists regarding the evaluation of density fields in numerical analysis output of solid carbon dioxide (CO 2 ) extrusion. This study aims to address this gap by examining the density fields in the numerical analysis output of the extrusion process for solid CO 2 , commonly known as dry ice. Dry ice, a by-product of ammonia compounds production, requires efficient management due to its high sublimation rate. Ram pressing is a commonly used method for compressing dry ice, but the resulting product often exhibits non-uniform density fields, presenting challenges for process optimization. To bridge this research gap, an algorithm is verified for determining the percentage share of density fields in the numerical simulation results. By comparing simulations using single-and multiple-cavity dies, the algorithm provides valuable insights into the distribution of density within the extruded solid CO 2 . In overcoming the limitations of subjective comparative evaluation, this study offers objective measures for assessing and comparing numerical analysis outputs. The findings contribute to a deeper understanding and optimization of the solid CO 2 extrusion process, facilitating the production of high-density dry ice products with reduced energy consumption. In conclusion, this research not only bridges the research gap in evaluating density fields but also advances the field of solid CO 2 extrusion and waste materials management.

show abstract

The Thermographic Analysis of the Agglomeration Process in the Roller Press of Pillow-Shaped Briquettes

Cited by 10 publications

References 46 publications

Experimental and Numerical Characterizataion of Thermal Bridges in Windows

Experimental and Numerical Characterizataion of Thermal Bridges in Windows

The Use of Thermography to Determine the Compaction of a Saddle-Shaped Briquette Produced in an Innovative Roller Press Compaction Unit

Evaluation of Density Fields of Numerical Analysis Output of Solid Carbon Dioxide Extrusion Process

Contact Info

Product

Resources

About