Snow insulation and conservation systems

Ter-Zakaryan, Karapet; Grigoryan, A. É.; Medvedev, Andrey; Efimov, Boris; Poserenin, Aleksey

doi:10.1051/e3sconf/201913801038

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…Karapet Ter‐Zakaryan et al. [ 165 ] reported the use of aerogel blankets to protect and conserve snow on the mountainsides and plateaus of ski resorts in Russia. For example, polyethylene foam rollers are used for butt connection and mechanically fixed to form a seamless thermal insulation coating(thermal insulation blanket) covering the entire mountainside.…”

Section: Thermal Properties and Applicationsmentioning

confidence: 99%

Recent advances in novel aerogels through the hybrid aggregation of inorganic nanomaterials and polymeric fibers for thermal insulation

et al. 2021

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Aerogel is a nanoporous solid material with ultrahigh porosity, ultralow density, and thermal conductivity, which is considered to be one of the most promising high‐performance insulation materials today. However, traditional pure inorganic aerogels (i.e., silica aerogel) exhibit inherent structural brittleness, making their processing and handling difficult, and their manufacturing costs are relatively high, which limits their large‐scale practical use. The recently developed aerogel based on polymer nanofibers has ultralow thermal conductivity and density, excellent elasticity, and designable multifunction. More importantly, one‐dimensional polymer nanofibers are directly used as building blocks to construct the network of aerogels via a gelation‐free process. This greatly simplifies the aerogel preparation process, thereby bringing opportunities for large‐scale aerogel applications. The aggregation of inorganic nanomaterials and polymer nanofibers is considered to be a very attractive strategy for obtaining highly flexible, easily available, and multifunctional composite aerogels. Therefore, this review summarizes the recent advances in novel aerogels through the hybrid aggregation of inorganic nanomaterials and polymeric fibers for thermal insulation. The main processing routes, porous microstructure, mechanical properties, and thermal properties and applications of these aerogels are highlighted. In addition, various future challenges faced by these aerogels in thermal insulation applications are discussed in this review.

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Section: Thermal Properties and Applicationsmentioning

confidence: 99%

Recent advances in novel aerogels through the hybrid aggregation of inorganic nanomaterials and polymeric fibers for thermal insulation

et al. 2021

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“…As a result, the most commonly employed method in the ski industry is storing snow on the ground with thermal insulation materials, providing flexibility in implementation. For instance, Ter-Zakaryan et al (2019) stored snow on a ski track at the end of the ski season. At glacier ski resorts, the approach involves placing insulation materials directly on top of the natural snow when it reaches its 70 maximum height and removing the materials before the first persistent snowfall occurs in late summer or early autumn (Olefs and Fischer, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Preserving snow throughout the summer season is a critical practice in ski industry applications (Grünewald et al, 2018;Ter-Zakaryan et al, 2019;Weiss et al, 2019). Considering the numerous ski resorts and venues in the Beijing and Chongli regions, snow storage becomes indispensable in the context of global warming.…”

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confidence: 99%

Assessing the key concerns in snow storage: A case study for China

Wang,

Ren

et al. 2023

Preprint

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Abstract. Snow security plays a crucial role in ensuring the success of winter sports events and supporting the ski industry. One effective approach to enhancing snow reliability is through snow storage. Despite its potential benefits, the investigation of snow storage in China has been limited. To address this gap, we implemented snow storage covered with geotextile at two venues, namely the Big Air Shougang (BAS) in Beijing for the 2022 Winter Olympic Games and the National Biathlon Center (NBC) in Chongli for the 2022 Winter Paralympic Games, in response to extreme meteorological conditions. In order to assess the key concerns associated with snow storage: ablation (the process of snow loss) and snow quality, we introduced a fine snow pile monitoring system and utilized the SNOWPACK model. Our observations revealed that, by February 18, the snow pile at the BAS had lost 158.6 m3 of snow (equivalent to 6.7 % of the initial volume). Subsequently, the accelerated ablation was influenced by both meteorological conditions and the presence of a thin geotextile layer. Between January 16 and April 15, the snow pile at BAS experienced a total loss of 1242.9 m3 of snow (corresponding to 52.7 % of the original volume). With regard to snow quality, there were no significant variations modeled at the study sites, except for the upper part of the snow piles. It was noted that the evaporation of wet geotextile contributed to slowing down the ablation process. Consequently, we discourage the use of impermeable coverage schemes for snow storage. Instead, the thickness of the cover played a vital role in preserving the snow pile. At Beijing and Chongli, the 0.7 m and 0.4 m thick cover layers, respectively, were found to protect approximately half of the snow height over the summer season. Importantly, the snow quality evolution was consistent across different cover thicknesses. The findings of our study have implications for the ski industry in China, as they provide valuable insights into snow storage techniques and their impact on snow reliability.

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Assessing the key concerns in snow storage: a case study for China

Wang,

Ren

et al. 2024

The Cryosphere

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Abstract. Snow security plays a crucial role in ensuring the success of winter sports events and supporting the ski industry. One effective approach to enhancing snow reliability is through snow storage. Despite its potential benefits, investigations of snow storage in China have been limited. To address this gap, we implemented snow storage covered with geotextiles at two venues, namely the Big Air Shougang (BAS) in Beijing for the Beijing 2022 Winter Olympic Games and the National Biathlon Center (NBC) in Chongli for the Beijing 2022 Winter Paralympic Games, in response to possible extreme meteorological conditions. To assess the key concerns associated with snow storage, ablation (the process of snow loss) and snow properties, we introduced a fine-snow-pile monitoring system and the SNOWPACK model. Our observations revealed that, by 18 February, the snow pile at BAS had lost 158.6 m3 of snow (equivalent to 6.7 % of the initial volume). Subsequently, the accelerated ablation was influenced by meteorological conditions and a thin geotextile layer. Between 16 January and 15 April, the snow pile at BAS experienced a total loss of 1242.9 m3 of snow (corresponding to 52.7 % of the original volume). Regarding snow properties, no significant variations were modeled at the study sites, except for the upper part of the snow piles. Notably, the evaporation of the geotextiles contributed to slowing the ablation process. Consequently, we discourage the use of impermeable coverage schemes for snow storage. Instead, the thickness of the cover played a vital role in preserving the snow pile. At Beijing and Chongli, the 0.7 and 0.4 m thick cover layers, respectively, were found to protect approximately half of the snow pile height over the summer season. Importantly, the evolution of snow properties was consistent across the different cover thicknesses. The findings of our study have implications for the ski industry in China, as they provide valuable insights into snow storage techniques and their impact on snow reliability.

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Snow insulation and conservation systems

Cited by 3 publications

References 11 publications

Recent advances in novel aerogels through the hybrid aggregation of inorganic nanomaterials and polymeric fibers for thermal insulation

Recent advances in novel aerogels through the hybrid aggregation of inorganic nanomaterials and polymeric fibers for thermal insulation

Assessing the key concerns in snow storage: A case study for China

Assessing the key concerns in snow storage: a case study for China

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