A review on thermal performance enhancement of green cooling system using different adsorbent/refrigerant pairs

Chauhan, Pankaj; Kaushik, S.C.; Tyagi, S. K.

doi:10.1016/j.ecmx.2022.100225

Cited by 14 publications

(10 citation statements)

References 283 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The adsorption capacity of the zeolite AlPO4-LTA is 370 mg g −1 at 70% relative humidity (RH), 19 which is less than that of the synthesized Zn 0.4 Co 0.6 Fe 2 O 4 at 95% RH (present work). The water-vapor regeneration temperature of silica gel and zeolites is even higher (100-200 °C), 20 making them an energy-intensive adsorbent material, 21 while it is even less for Zn 0.4 Co 0.6 Fe 2 O 4 (45 °C) (present work).…”

Section: Introductionmentioning

confidence: 74%

Exploring moisture adsorption on cobalt-doped ZnFe₂O₄ for applications in atmospheric water harvesting

Ehtisham,

Badawi,

Khan

et al. 2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 74%

Exploring moisture adsorption on cobalt-doped ZnFe₂O₄ for applications in atmospheric water harvesting

Ehtisham,

Badawi,

Khan

et al. 2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Given the growing demand for these applications as populations continue to urbanize, the use of environmentally friendly refrigerants is crucial. 2 Energy transfer via refrigerants involves controlling the fluidphase properties by adjusting the system temperature and pressure. This engineered control over the refrigeration cycle allows for heat transfer between the refrigerant and a heat exchange fluid.…”

Section: Introductionmentioning

confidence: 99%

“…Refrigerants are employed in applications that require a medium for energy transfer (typically thermal), such as cooling, heat pumps, air conditioning, etc. Given the growing demand for these applications as populations continue to urbanize, the use of environmentally friendly refrigerants is crucial …”

Section: Introductionmentioning

confidence: 99%

Engineered Nanoporous Frameworks for Adsorption Cooling Applications

Shen,

Kumar,

Wahiduzzaman

et al. 2024

Chem. Rev.

View full text Add to dashboard Cite

The energy demand for traditional vapor-compressed technology for space cooling continues to soar year after year due to global warming and the increasing human population's need to improve living and working conditions. Thus, there is a growing demand for eco-friendly technologies that use sustainable or waste energy resources. This review discusses the properties of various refrigerants used for adsorption cooling applications followed by a brief discussion on the thermodynamic cycle. Next, sorbents traditionally used for cooling are reviewed to emphasize the need for advanced capture materials with superior properties to improve refrigerant sorption. The remainder of the review focus on studies using engineered nanoporous frameworks (ENFs) with various refrigerants for adsorption cooling applications. The effects of the various factors that play a role in ENF−refrigerant pair selection, including pore structure/ dimension/shape, morphology, open-metal sites, pore chemistry and possible presence of defects, are reviewed. Next, in-depth insights into the sorbent−refrigerant interaction, and pore filling mechanism gained through a combination of characterization techniques and computational modeling are discussed. Finally, we outline the challenges and opportunities related to using ENFs for adsorption cooling applications and provide our views on the future of this technology.

show abstract

“…One of the effective approaches to improving the cooling performance of ACs is exploring high-performing adsorbent/refrigerant working pairs. − Ammonia with zero-carbon and high hydrogen content , has been widely used as a working medium for ice-making, refrigeration, heating, and heat storage. − Recently, ammonia has also received growing research interest as an effective hydrogen carrier. , Except for environmental friendliness, the large vapor pressure and enthalpy of evaporation (around 1 MPa and 1165 kJ/kg at room temperature) endow ammonia with a superior refrigerant for ACs, which favors heat and mass transfer. Since the first working pair of AgCl 2 /ammonia was used by Michael Faraday in 1823, many ammonia-related working pairs based on chemical and physical adsorption have been reported .…”

Section: Introductionmentioning

confidence: 99%

Ammonia Adsorption Performance of Zeolitic Imidazolate Frameworks for Cooling

Liu,

Cheng,

Kim

et al. 2023

Langmuir

View full text Add to dashboard Cite

Promoting the cooling performance of adsorption chillers (ACs) greatly relies on the exploration of high-performance adsorbent/refrigerant working pairs. Ammonia is not only an environmentally friendly refrigerant but also favorable for heat and mass transfer in ACs owing to its large vapor pressure and enthalpy of evaporation. Zeolite imidazolate frameworks (ZIFs) with excellent ammonia stability are identified as a class of potential adsorbents for practical ammonia-based ACs. However, high-performing ZIF/ammonia working pairs with excellent AC performance are still to be developed. In this work, the cooling performance including the coefficient of performance for cooling (COPC) and the specific cooling effects (SCEs) of 26 ZIFs with the same composites but different topologies was evaluated by combining molecular simulation and mathematical modeling. Five high-performing ZIFs with COPC > 0.45 and SCE > 250 kJ/kg were identified, among which gis -ZIF with the highest COPC of 0.51 and lta -ZIF with the highest SCE of 354 kJ/kg both are promising to be synthesized and applied further. Besides, the quantitative structure–performance relationship (QSPR) was extracted that can help quickly identify and design high-performing ZIFs according to their ammonia adsorption isotherms and structural characteristics. Moreover, “S”-shaped adsorption isotherms with high saturation adsorption capacity (>0.2 g/g), suitable step position (0.2–0.4), and relatively low Henry’s constant (<1 × 10–5 mol/(kg·Pa)) are more favorable for excellent COPC and SCE. From the perspective of structure characteristics, ZIFs possessing low crystal density (<0.9 g/cm3), high accessible surface area (>2000 m2/g), balanced largest cavity diameter (∼15 Å), and accessible pore volume (∼0.65 cm3/g) are beneficial for high-efficient cooling performance.

show abstract

A review on thermal performance enhancement of green cooling system using different adsorbent/refrigerant pairs

Cited by 14 publications

References 283 publications

Exploring moisture adsorption on cobalt-doped ZnFe₂O₄ for applications in atmospheric water harvesting

Exploring moisture adsorption on cobalt-doped ZnFe₂O₄ for applications in atmospheric water harvesting

Engineered Nanoporous Frameworks for Adsorption Cooling Applications

Ammonia Adsorption Performance of Zeolitic Imidazolate Frameworks for Cooling

Contact Info

Product

Resources

About

A review on thermal performance enhancement of green cooling system using different adsorbent/refrigerant pairs

Cited by 14 publications

References 283 publications

Exploring moisture adsorption on cobalt-doped ZnFe2O4 for applications in atmospheric water harvesting

Exploring moisture adsorption on cobalt-doped ZnFe2O4 for applications in atmospheric water harvesting

Engineered Nanoporous Frameworks for Adsorption Cooling Applications

Ammonia Adsorption Performance of Zeolitic Imidazolate Frameworks for Cooling

Contact Info

Product

Resources

About

Exploring moisture adsorption on cobalt-doped ZnFe₂O₄ for applications in atmospheric water harvesting

Exploring moisture adsorption on cobalt-doped ZnFe₂O₄ for applications in atmospheric water harvesting