Hierarchical Photothermal Fabrics with Low Evaporation Enthalpy as Heliotropic Evaporators for Efficient, Continuous, Salt-Free Desalination

ACS Nano ◽  
2021 ◽  
Author(s):  
Zixiao Liu ◽  
Zhan Zhou ◽  
Naiyan Wu ◽  
Ruiqi Zhang ◽  
Bo Zhu ◽  
...  
Keyword(s):  
Evaporation Enthalpy

Determination of the Vapor Pressure and Evaporation Enthalpy of CeO2 Nano-Fuels Based on Isothermogravimetry

2021 ◽  
Vol 43 (1) ◽  
Author(s):  
Qian Ji ◽  
Deqing Mei ◽  
Chao Sun ◽  
Zongning Zhu ◽  
Dongmei Guo
Keyword(s):  
Vapor Pressure ◽  
Evaporation Enthalpy

scholarly journals Hierarchical Porous Aero-Cryogels for Wind Energy Enhanced Solar Vapor Generation

2021 ◽  
Author(s):  
Shuai Li ◽  
Xiaochun Yang ◽  
Yingying He ◽  
Yanan Wang ◽  
Daogui Liao ◽  
...  
Keyword(s):  
Wind Energy ◽  
Evaporation Rate ◽  
High Efficiency ◽  
Pure Water ◽  
Water Evaporation ◽  
Vapor Generation ◽  
Hierarchical Porous ◽  
Evaporation Enthalpy ◽  
Absorbing Layer ◽  
Transport Channels

Abstract An integrated aero-cryogel (A-CG) monolith with hierarchical porous structure was developed by inter-crosslinking of cellulose nanofiber (CNF)/polylactic acid (PLA) nanocomposite aerogel and carboxymethyl cellulose (CMC) cryogel. The photothermal nanoparticles-enriched CMC cryogel phase served as a sunlight absorbing layer, exhibiting a broadband sunlight absorption of 98%. Due to the large amount of weakly bounded water molecules, the swelled CMC cryogel possessed a lower evaporation enthalpy than that of pure water, which facilitates water evaporation, while the nanocomposite aerogel phase acted as an excellent thermal insulator and afforded highly efficient water transport channels. Thus, the developed A-CG monolith supported by insulated polystyrene foam to protrude above the water surface, could reach an evaporation rate of 2.16 kg m-2 h-1 under an irradiation of 1 Sun (100 mw/cm2) with an efficiency of 93.6%. More remarkably, when the wind energy was imparted, an evaporation rate of 5.67 kg m-2 h-1 was achieved at a wind speed of 3 m s-1. The high-efficiency purification outcomes of various raw water demonstrate the great potentials of A-CG material in solar vapor generation.

Polyelectrolyte-based photothermal hydrogel with low evaporation enthalpy for solar-driven salt-tolerant desalination

2021 ◽  
pp. 134224
Author(s):  
Congcong Li ◽  
Bo Zhu ◽  
Zixiao Liu ◽  
Jiangtong Zhao ◽  
Ruru Meng ◽  
...  
Keyword(s):  
Salt Tolerant ◽  
Evaporation Enthalpy

Enhanced Interfacial Solar Evaporation through Formation of Micro‐Meniscuses and Microdroplets to Reduce Evaporation Enthalpy

2022 ◽  
pp. 2108586
Author(s):  
Zhen Yu ◽  
Ruonan Gu ◽  
Yue Tian ◽  
Pengfei Xie ◽  
Beichen Jin ◽  
...  
Keyword(s):  
Evaporation Enthalpy

scholarly journals Enthalpy of isopropanol adsorption on zeolite

2019 ◽  
Vol 21 (4) ◽  
pp. 58-65
Author(s):  
Maciej Jabłoński ◽  
Alicja Dzienisz ◽  
Marta Sawicka ◽  
Elwira Wróblewska ◽  
Krzysztof Lubkowski ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Adsorption Isotherms ◽  
Equilibrium Adsorption ◽  
Scanning Calorimetry ◽  
Adsorption Method ◽  
Adsorption Enthalpy ◽  
Water Desorption ◽  
Flow Method ◽  
Static Adsorption ◽  
Evaporation Enthalpy

Abstract The enthalpy of isopropanol adsorption on ZSM-5 (Zeolite Socony Mobil Framework Type MFI) was determined by the static adsorption method at the temperature range from 20°C to 100°C. Langmuir and Huttig models of equilibrium adsorption have been used to calculate the enthalpy of isopropanol adsorption at these conditions. Adsorption isotherms determined by the flow method at 20°C and 30°C have been also used in the calculations. The obtained values of isopropanol adsorption enthalpy were compared with the values of isopropanol evaporation enthalpy and with the results obtained from isopropanol and water desorption measurements with thermogravimetry and differential scanning calorimetry methods.

scholarly journals Influence of working fluid evaporation temperature in the near-critical point region on the effectiveness of ORC power plant operation

2012 ◽  
Vol 33 (3) ◽  
pp. 73-83 ◽  
Author(s):  
Władysław Nowak ◽  
Aleksandra Borsukiewicz-Gozdur ◽  
Sławomir Wiśniewski
Keyword(s):  
Critical Point ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Maximum Power ◽  
Critical Conditions ◽  
Working Fluid ◽  
Working Fluids ◽  
Evaporation Temperature ◽  
Evaporation Enthalpy ◽  
Selection Of

Abstract In the paper presented are definitions of specific indicators of power which characterize the operation of the organic Rankine cycle (ORC) plant. These quantities have been presented as function of evaporation temperature for selected working fluids of ORC installation. In the paper presented also is the procedure for selection of working fluid with the view of obtaining maximum power. In the procedure of selection of working fluid the mentioned above indicators are of primary importance. In order to obtain maximum power there ought to be selected such working fluids which evaporate close to critical conditions. The value of this indicator increases when evaporation enthalpy decreases and it is known that the latent heat of evaporation decreases with temperature and reaches a value of zero at the critical point.

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