Insulation thermal conductivity heating networks during transportation thermal energy under dry and moisturizing condition: a comparative study of the guarded hot plate and guarded hot pipe method

Hayrullin, A R; Haibullina, A I; Sinyavin, Alex

doi:10.1016/j.trpro.2022.06.109

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Between 100 °C and 250 °C, rockwool is the most used insulation material for heat delivery piping, as it achieves thermal conductivity values of 0.040 (W/m‧K). However, the thermal insulation efficiency of rockwool is influenced by environmental conditions: in the presence of 5% moisture level, the thermal conductivity of the material can reach a maximum value of 0.065 (W/m‧K) [11].…”

Section: Introductionmentioning

confidence: 99%

Design and thermal test of high-vacuum insulator for heat delivery pipes

Capolupo,

D’Alessandro,

Strazzullo

et al. 2024

J. Phys.: Conf. Ser.

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Thermal piping insulation of implants is crucial for heat delivery, production, collection, or storage at high temperature values. It is currently obtained by enveloping low thermal conductivity materials such as rockwool, fiberglass, polyurethane, polystyrene, and aerogel. However, better performances can be reached by adopting vacuum technology. In this case, conductive losses are annihilated, and the radiative heat transfer mechanism represents the only loss mechanism. Here, we compare a high vacuum-based novel solution and the traditional insulation for heat delivery applications. We propose a high vacuum- based solution consisting of an evacuated gap that surrounds the hot pipe coated by a thin aluminium foil. Experimental results using this novel solution show a fivefold reduction of the thermal radiation losses compared to the traditional solutions when in the temperature range between 100 °C and 250 °C.

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Section: Introductionmentioning

confidence: 99%

Design and thermal test of high-vacuum insulator for heat delivery pipes

Capolupo,

D’Alessandro,

Strazzullo

et al. 2024

J. Phys.: Conf. Ser.

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“…Other properties, such as noise reduction or fire resistance, might also be crucial in certain applications. In applications where moisture may penetrate the insulation, resistance to dampness is another factor to consider [8,9]. Therefore, there is no one material that is suitable for all installations-even if one might have better thermal properties, another can be more appropriate for the overall demands.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Selected Insulating Materials for Industrial Piping

Porzuczek

2024

Materials

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This paper describes the results of an experimental assessment of the thermal conductivity of pipe insulation. The need for reducing energy loss in industrial piping systems makes the availability of relevant and reliable insulation materials of special importance. Several specimens of pipe laggings, made of different materials, including mineral wool, polyethylene foam (PEF), expanded polystyrene (EPS), flexible elastomeric foam (FEF) and polyurethane foam (PUR), were tested in accordance with the European standard ISO 8497. The thermal conductivity of the materials was measured for a wide range of temperatures. The results were compared with the values reported in the technical specifications as well as with the literature data. The assessment of measurement uncertainty was also described. The results showed that, in a few cases, thermal conductivity turned out to be greater than that declared by the manufacturer by as much as over 10%.

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