Evaporative/radiative electrospun membrane for personal cooling

Iqbal, Mohammad Irfan; Shi, Shuo; Kumar, Gokula Manikandan Senthil; Hu, Jinlian

doi:10.1007/s12274-022-4987-x

Cited by 22 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Innovations like zinc oxide nanoparticle integration into PE have achieved impressive solar reflectance above 0.9, while maintaining transmittance within the LWIR atmospheric window (Fig. 4(a)) [48,49]. Techniques like electrospinning [50] and creating porous PE aerogels [36,47,51,52] have also been employed to enhance Mie scattering and reflectance, as well as to attain radiative cooling effects.…”

Section: Rec By Perspirationmentioning

confidence: 99%

Radiative-coupled evaporative cooling: Fundamentals, development, and applications

Yu,

Huang,

et al. 2024

Nano Research Energy

View full text Add to dashboard Cite

As global energy demand continues to rise and climate change accelerates, the need for sustainable and energy-efficient cooling solutions has reached a critical level. Conventional air conditioning systems heavily rely on energy-intensive mechanical cooling, which significantly contributes to both electricity demand and greenhouse gas emissions. Passive cooling strategies, particularly radiative cooling (RC) and evaporative cooling (EC), present an alternative approach by harnessing natural processes for temperature regulation. While standalone RC can be affected by weather conditions and EC relies on water availability, Radiative-coupled EC (REC) offers a versatile and sustainable cooling solution suitable for various applications. Here we summarize an overview of the theoretical foundations and mathematical models of REC, encompassing REC by bulk water (REC-BW), REC by perspiration (REC-P), and REC by sorbed water (REC-SW). Moreover, we explore a range of applications, spanning from industrial processes to personal thermal management, and examine the advantages and challenges associated with each REC approach. The significance of REC lies in its potential to revolutionize cooling technology, reduce energy consumption, and minimize the environmental impact. REC-BW can conserve water resources in industrial cooling processes, while REC-P offers innovative solutions for wearable electronics and textiles. REC-SW's adaptability makes it suitable for food preservation and future potable cooling devices. By addressing the challenges posed by REC, including water consumption, textile design, and optimization of bilayer structures, we can unlock the transformative potential of REC and contribute to sustainable cooling technologies in a warming world.

show abstract

Section: Rec By Perspirationmentioning

confidence: 99%

Radiative-coupled evaporative cooling: Fundamentals, development, and applications

Yu,

Huang,

et al. 2024

Nano Research Energy

View full text Add to dashboard Cite

show abstract

“…The human body emits mid-IR (MIR) thermal radiation with a peak of 9.5 μm in the wavelength range of 7–14 μm and an IR emissivity of 0.98. , This low-temperature radiation spectrum corresponds to the transparent window in the atmosphere of Earth that permits successful emission of body heat into space (3 K) . Radiative cooling is a sophisticated strategy of cooling that involves reflecting energy into the outer space through atmospheric windows. , The amount of heat lost by the human body owing to thermal radiation dissipation can be calculated as follows: ,, P normalr normala normald = prefix∫ 0 ∞ d λ · I B B false( T , λ false) · ε false( λ false) and I normalB normalB ( T , λ ) = 2 h · c 2 λ 5 · 1 e h c / λ k B T − 1 where I BB is the spectrum radiation of the blackbody at temperature ( T ), ε(λ) is the surface spectral emissivity of the skin or textile, h is Planck’s constant, c is the velocity of light, and k B is Boltzmann’s constant.…”

Section: Basic Concept Of Thermal Comfort and The Heat Pathwaymentioning

confidence: 99%

“…Compared with conventional HVAC systems, a state-of-the-art PTM system (PTMS) facilitates the design of wearable, precise, and individual-specific textiles by employing energy conversion technologies such as radiative cooling and Joule heating. − Researchers are intrigued by PTMSs that may economically harness the excess heat of the human body to generate power or precisely control temperature for thermal comfort. , A PTMS focuses on three functions: (1) personal thermoregulation with the aim of regulating the body temperature, (2) energy harvesting with an emphasis on heat recovery, and (3) thermal insulation based on sustainable energy conservation. ,,− PTMS may be a promising candidate, given the limitations of centralized space thermoregulatory systems (i.e., HVAC systems) because they have the potential to enhance adaptability at the individual level as well as in a wide range of outdoor circumstances, including athletics, military, and specific occupations. The emergence of PTMSs, which strive to deliver optimal thermal comfort, is a response to these growing demands. − …”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Thermoregulatory Clothing: Materials, Mechanisms, and Perspectives

et al. 2023

Self Cite

View full text Add to dashboard Cite

Personal thermal management (PTM) is a promising approach for maintaining the thermal comfort zone of the human body while minimizing the energy consumption of indoor buildings. Recent studies have reported the development of numerous advanced textiles that enable PTM systems to regulate body temperature and are comfortable to wear. Herein, recent advancements in thermoregulatory clothing for PTM are discussed. These advances in thermoregulatory clothing have focused on enhancing the control of heat dissipation between the skin and the localized environment. We primarily summarize research on advanced clothing that controls the heat dissipation pathways of the human body, such as radiation-and conductance-controlled clothing. Furthermore, adaptive clothing such as dual-mode textiles, which can regulate the microclimate of the human body, as well as responsive textiles that address both thermal performance (warming and/or cooling) and wearability are discussed. Finally, we include a discussion on significant challenges and perspectives in this field, including large-scale production, smart textiles, bioinspired clothing, and AI-assisted clothing. This comprehensive review aims to further the development of sustainably manufactured advanced clothing with superior thermal performance and outstanding wearability for PTM in practical applications.

show abstract

“…Evaporative cooling relies on enhancing sweat transport and evaporation to achieve cooling (wick-evaporation cooling). [19][20][21][22] However, this method is not always applicable in scenarios that require high protection. Conduction cooling [18,[23][24][25] involves regulating heat conduction properties, while radiative cooling relies on controlling emissivity within the mid-infrared (IR) wavelength range (8-14 μm).…”

Section: Introductionmentioning

confidence: 99%

Radiative Cooling and Protective Clothing Through Lamination of Hierarchically Porous Membrane

Liu,

Zhang,

et al. 2024

Adv Materials Technologies

View full text Add to dashboard Cite

Personal protective clothing is designed to safeguard medical personnel from highly infectious diseases. However, it often compromises comfort, especially when worn outdoors during epidemics like the global COVID‐19 outbreak. This can lead to discomfort and even heatstroke. To tackle this issue, radiative cooling is incorporated into personal protective clothing by integrating hierarchically porous poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) membranes into the fabric. These membranes possess a remarkable solar reflection rate of 96.9% and a strong mid‐infrared emittance of 95.2%. In practical scenarios, when exposed to clear sunny weather at midday, wearing radiative cooling personal protective clothing has the potential to reduce the temperature by 4.7 °C compared to commercially available personal protective clothing. Moreover, the lamination of porous PVDF‐HFP membranes enhances the protective capacity by increasing the synthetic blood penetration pressure from 7 to 20 kPa. The manufacturing process is straightforward, cost‐effective, and aligns with industry standards, making it suitable for large‐scale implementation in epidemic prevention and control. This technology offers comfortable protection while minimizing the risk of heatstroke.

show abstract

Evaporative/radiative electrospun membrane for personal cooling

Cited by 22 publications

References 43 publications

Radiative-coupled evaporative cooling: Fundamentals, development, and applications

Radiative-coupled evaporative cooling: Fundamentals, development, and applications

Recent Advances in Thermoregulatory Clothing: Materials, Mechanisms, and Perspectives

Radiative Cooling and Protective Clothing Through Lamination of Hierarchically Porous Membrane

Contact Info

Product

Resources

About