Temperature dependent emissivity of different stainless steel textiles in the infrared range

Larciprete, Maria Cristina; Gloy, Yves-Simon; Voti, R. Li; Cesarini, Gianmario; Leahu, Grigore; Bertolotti, M.; Sibilia, C.

doi:10.1016/j.ijthermalsci.2016.12.001

Cited by 39 publications

(16 citation statements)

References 17 publications

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“…For radiative-warming purposes, textiles with engineered high-mid-IR reflectance are in demand. Textiles made of pure metallic fibers were reported by Larciprete et al 48 Even though good thermal reflection was realized, this type of textile is heavy, stiff, and fragile. Metal-polymer composite yarns (e.g., core spun yarns and blended yarns) were also reported for IR-reflective textiles with improved flexibility.…”

Section: Low-mid-ir Emissive Radiative-warming Textilesmentioning

confidence: 99%

Advanced Textiles for Personal Thermal Management and Energy

Peng

Cui

2020

Joule

470

283

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To realize improved human body thermal comfort and reduce energy consumption on building heating and cooling, personal thermal management emphasizing energy management of human body and its local environment is emerging as a promising solution. Advanced textiles are being invented and developed to effectively regulate heat exchange between human body and its surroundings. Here, recent progress on advanced textiles for personal thermal management and its significance in energy efficiency are reviewed. We will mainly discuss textiles with engineered properties targeting at passively controlling human body heat dissipation routes, the active warming and/or cooling textiles, and the responsive textiles that offer adaptive personal thermal management ability according to the external stimuli. An outlook discussing important challenges and opportunities in this field is also presented.

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Section: Low-mid-ir Emissive Radiative-warming Textilesmentioning

confidence: 99%

Advanced Textiles for Personal Thermal Management and Energy

Peng

Cui

2020

Joule

470

283

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“…However, in order to evaluate the temperature increase of the target in the long timescale of hundreds of seconds, the FDTD algorithm becomes inappropriate due to the huge computational time required to follow the temperature increase of every voxel to be updated with the considered temporal step Δt (~ μs). An alternative approach, which guarantees a fast solution, is given by a simple model based on the energy balance between the heat deposited in the target by the pulsed positron beam and the energy emitted from the target via infrared radiation [44][45][46][47][48][49], according to the expression where T is the average target temperature, P cw = E d /t rep is the equivalent "continuous wave power" deposited on the target as if the whole energy E d was continuously deposited during the whole period t rep between two subsequent trains of bunches, m is the mass of the target, S is the total surface of the target, ε is the sample emissivity, T room is the temperature of the environment. The nonlinear ordinary differential Eq.…”

Section: Theoretical Modelmentioning

confidence: 99%

Theoretical Modeling for the Thermal Stability of Solid Targets in a Positron-Driven Muon Collider

Cesarini

Antonelli

Anulli³

et al. 2021

Int J Thermophys

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A future multi-TeV muon collider requires new ideas to tackle the problems of muon production, accumulation and acceleration. In the Low EMittance Muon Accelerator concept a 45 GeV positron beam, stored in an accumulation ring with high energy acceptance and low angular divergence, is extracted and driven to a target system in order to produce muon pairs near the kinematic threshold. However, this scheme requires an intensity of the impinging positron beam so high that the energy dissipation and the target maintenance are crucial aspects to be investigated. Both peak temperature rises and thermomechanical shocks are related to the beam spot size at the target for a given material: these aspects are setting a lower bound on the beam spot size itself. The purpose of this paper is to provide a fully theoretical approach to predict the temperature increase, the thermal gradients, and the induced thermomechanical stress on targets, generated by a sequence of 45 GeV positron bunches. A case study is here presented for Beryllium and Graphite targets. We first discuss the Monte Carlo simulations to evaluate the heat deposited on the targets after a single bunch of 3 × 1011 positrons for different beam sizes. Then a theoretical model is developed to simulate the temperature increase of the targets subjected to very fast sequences of positron pulses, over different timescales, from ps regime to hundreds of seconds. Finally a simple approach is provided to estimate the induced thermomechanical stresses in the target, together with simple criteria to be fulfilled (i.e., Christensen safety factor) to prevent the crack formation mechanism.

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“…In particular, PES allows the realization of textiles where the fibers are interlaced according to different geometries as those, for instance, required for the realization of integrated antennas. However, several problems remain unsolved and, among others, the dissipation of the heat produced by the integrated electronic devices through the substrate textile is among the most important issue, which still deserves further studies in order to optimize the effective thermal diffusivity and infrared emissivity of these structures [ 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

In-Plane Thermal Diffusivity Measurements of Polyethersulfone Woven Textiles by Infrared Thermography

Larciprete

Orazi

Gloy³

et al. 2022

Sensors

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Lock-in thermography was applied to the measurement of the in-plane thermal diffusivity of three polyethersulfone (PES) textiles characterized by different weaving pattern as well as different mass density of interlacing fibers. The experimental results showed that the in-plane thermal diffusivity in each direction decreased with the increase of the fibers’ linear mass density, thus leading to an anisotropic behavior of the thermal diffusivity in the specimen where PES fibers with different density were interlaced. A new theoretical model for the study of the heat diffusion in textiles was specifically developed and, thereafter, employed for the analysis of the experimental results. As such, our textile model approach, shedding light on the role of different textile and fibers parameters on the resulting thermal diffusivity, paves the way for the development and design of textiles with tailored thermal behavior.

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Temperature dependent emissivity of different stainless steel textiles in the infrared range

Cited by 39 publications

References 17 publications

Advanced Textiles for Personal Thermal Management and Energy

Advanced Textiles for Personal Thermal Management and Energy

Theoretical Modeling for the Thermal Stability of Solid Targets in a Positron-Driven Muon Collider

In-Plane Thermal Diffusivity Measurements of Polyethersulfone Woven Textiles by Infrared Thermography

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