Experimental investigation of dehumidification performance of a vapor compression refrigeration system

Tang, Chunli; Vafai, Kambiz; Gu, Conghui; Gloria, Kasolongo Ndongo; Karim, M.D. Razaul

doi:10.1016/j.icheatmasstransfer.2022.106282

Cited by 12 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They include moisture-induced generators − and humidity-responsive films − and aerogels . Most importantly, clean liquid water can be harvested from air through phase change. − However, too much moisture in the air can be hazardous, requiring fast and highly effective dehumidification. − Considering the impact of various factors, including energy, environment, and operations, there is an urgent requirement for effective solutions for sustainable atmospheric moisture management in different situations.…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose Building Block for the Construction of Hygroscopic Aerogels

Xu,

Li,

et al. 2024

Acc. Mater. Res.

View full text Add to dashboard Cite

Metrics & MoreArticle Recommendations CONSPECTUS: Moisture, a ubiquitous component in the atmosphere, offers a wealth of opportunities and presents various challenges in our daily lives and the surrounding environment. On the one hand, people can obtain clean drinking water from air and use the moisture to create new energy sources. On the other hand, many people across the world still face long-term drought or damp hazards caused by extremely low or high humidity. Therefore, the sustainable management of atmospheric moisture is crucial for creating a comfortable lifestyle for humanity.Cooling condensation and desiccant drying are established methods for adjusting atmospheric humidity, yet they still face a range of challenges including energy usage, efficiency levels, operational simplicity, and broad applicability. Recently, hygroscopic materials, which can regulate environmental humidity, material performance, and collect water by adsorbing moisture from air and managing the adsorbed moisture, are attracting increasing attention. For the efficient and scalable production of hygroscopic materials, it is fundamental to carefully select and ingeniously assemble the building blocks that dictate their performance.Nanocellulose, an emerging biopolymer nanofiber, is predominantly biosynthesized by higher plants, positioning it as an ideal building block for constructing hygroscopic materials. Its appeal lies in the sustainable and plentiful nature of its raw materials, coupled with its distinctive one-dimensional nanostructure, abundant surface hydroxyl groups, and outstanding mechanical strength. Furthermore, its capacity to readily assemble into diverse structures through straightforward processes makes it a compelling choice for advancing the development of next-generation biopolymer-based hygroscopic materials. Lightweight and self-standing hygroscopic aerogels can be fabricated after integration nanocellulose with various hygroscopic salts through a series of methods. As well as adsorbing atmospheric moisture, they can transform gaseous water into liquid water, and transport it to their interiors for storage. Water evaporation and release are realized by simply exposing the moisture-adsorbed aerogels to sunlight. These properties qualify plant material-derived hygroscopic aerogels as sustainable moisture management platform that are useful in many fields.In the present Account, we describe recent progress in the use of nanocellulose as a building block for constructing hygroscopic aerogels. We will begin with the introduction of some fundamental knowledge about nanocellulose, with a specific focus on the extraction of nanofibrillated cellulose, a kind of nanocellulose mainly individualized from wood powders by chemical pretreatment combined with mechanical nanofibrillation, as well as its nanostructure characteristics. We will then describe the methods for manufacturing various types of nanocellulose hygroscopic aerogels and their hierarchical structures. Subsequently, we will analyze the hygroscopic performance...

show abstract

Section: Introductionmentioning

confidence: 99%

Nanocellulose Building Block for the Construction of Hygroscopic Aerogels

Xu,

Li,

et al. 2024

Acc. Mater. Res.

View full text Add to dashboard Cite

show abstract

“…However, refrigeration technology depends on the equipment that is inconvenient to maneuver and use in a narrow space and requires a large amount of energy supply. [ 77 ] Some surface adsorbents, such as silica gel, have insufficient adsorption capacity and will reach saturation after adsorbing a certain amount of water vapor. [ 78 ] Metal–organic frameworks and their derived materials have been widely used for atmospheric water collection in recent years.…”

Section: Introductionmentioning

confidence: 99%

Biopolymers for Hygroscopic Material Development

Wang

Zhang

et al. 2023

Advanced Materials

View full text Add to dashboard Cite

The effective management of atmospheric water will create huge value for mankind. Diversified and sustainable biopolymers that are derived from organisms provide rich building blocks for various hygroscopic materials. Here, a comprehensive review of recent advances in developing biopolymers for hygroscopic materials is provided. It is begun with a brief introduction of species diversity and the processes of obtaining various biopolymer materials from organisms. The fabrication of hygroscopic materials is then illustrated, with a specific focus on the use of biopolymer‐derived materials as substrates to produce composites and the use of biopolymers as building blocks to fabricate composite gels. Next, the representative applications of biopolymer‐derived hygroscopic materials for dehumidification, atmospheric water harvesting, and power generation are systematically presented. An outlook on future challenges and key issues worthy of attention are finally provided.

show abstract

“…This is not a newer idea for air cooling, as evaporation is known to be a source of cooling air for generations [4][5][6][7][8][9][10][11]. To overcome the challenges of latent as well as sensible load handling, improving air quality in humid/tropical regions, working below wet-bulb barrier [12], utilizing return air energy [13], renewable integration [14], open cycle with refrigeration [15] benefits (especially in the COVID-19 pandemic), etc. are some of the talking points of the desiccant based evaporative cooling technology.…”

Section: Introductionmentioning

confidence: 99%