Measurement of temperature profile near the evaporating interface in an annular pool with radial temperature gradients at low pressures

Guo, Rui-Feng; Zhang, Li; Mo, Dong-Ming; Wu, Chun-Mei; Li, You–Rong

doi:10.1016/j.expthermflusci.2020.110221

Cited by 15 publications

(2 citation statements)

References 33 publications

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“…These measurements are taken for every 0.1 m² of sun dome area. On the other hand, a significant increase in the temperature of the glass used was recorded, comparing with experimental measurements [36] during the morning. The temperature of the glass increases until it reaches a maximum value of 70℃ at noon and then begins to decrease.…”

Section: Validation Of Heat Transfer Matrix By Rk4 On Matlabsupporting

confidence: 53%

Solar Dome Integration as Technical New in Water Desalination: Case Study Morocco Region Rabat-Kenitra

Lachhab

Bliya

Ibrahmi

et al. 2021

Preprint

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In order to improve distillate water, this paper presents a study of the solar dome system that is considered as one of the most important economical solutions in the domain of drinking water production. For this, a mathematical model was built from equations describing the optical and thermal phenomenon involved in this process. The concentration of radiation and the heat flow were simulated in each 0.1m² of the dome which using the metrological parameters of Morocco’s region Rabat-Salé-Kenitra. The results can follow the evolution of the temperature of glass, salt water, point dew temperature, saturation pressure and evaporation rate as well as humidity reached in August month for the study zone. For this, a numerical implementation on Matlab and Ansys are compared with measurements for the same parameters showed in the domain study of single slope. The comparison results are more significant by the rise of the ray concentration rate reached until 99% if the inclination angle of the heliostat divided into three intervals. The saturation pressure increases as long as with the rate of evaporation and the humidity that produces ordinary daily fresh water.

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Section: Validation Of Heat Transfer Matrix By Rk4 On Matlabsupporting

confidence: 53%

Solar Dome Integration as Technical New in Water Desalination: Case Study Morocco Region Rabat-Kenitra

Lachhab

Bliya

Ibrahmi

et al. 2021

Preprint

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“…Furthermore, the uniform temperature layer below the evaporating interface has been found in the temperature measurements. − The uniform temperature layer is believed to be related to thermocapillary convection and has a large effect on the energy transfer mode in the liquid layer. Moreover, buoyancy convection may also influence the temperature distribution and uniform temperature layer in the liquid phase .…”

Section: Introductionmentioning

confidence: 93%

Study on Evaporation Characteristics of Water in Annular Liquid Pool at Low Pressures

Guo

Zhang²,

et al. 2021

ACS Omega

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In order to investigate the energy transfer mechanism and the nonequilibrium effect during water evaporation in its own pure vapor at low pressures, a series of precise measurements are conducted to obtain the temperature profile near the liquid−vapor interface and the evaporation rates in an annular pool in a closed chamber. The results show that the interface temperature of the vapor side is higher than that of the liquid side when water evaporates in its own pure vapor at low pressures (ranging from 394 to 1467 Pa), the temperature discontinuity across the interface exists in all experimental conditions. The magnitude of the temperature discontinuity is strongly affected by the vapor pressure. A uniform temperature layer with a thickness of about 2 mm is found below the evaporating interface because of the coupling effect of evaporation cooling and thermocapillary convection. The energy required for evaporation is mainly transferred by thermocapillary convection in the uniform temperature layer. Furthermore, the numerical simulation results confirm that the evaporation flux near the cylinders is much larger than that at the middle region, which implies that most of the latent heat required for evaporation is transferred to the interface near the cylinders.

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Experimental Analysis of Interfacial Evaporation Utilizing Solar and Electrically Driven Systems

Kalaiarasu¹,

Sriram²,

Madavan³

et al. 2022

Recent Advances in Energy Technologies

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Measurement of temperature profile near the evaporating interface in an annular pool with radial temperature gradients at low pressures

Cited by 15 publications

References 33 publications

Solar Dome Integration as Technical New in Water Desalination: Case Study Morocco Region Rabat-Kenitra

Solar Dome Integration as Technical New in Water Desalination: Case Study Morocco Region Rabat-Kenitra

Study on Evaporation Characteristics of Water in Annular Liquid Pool at Low Pressures

Experimental Analysis of Interfacial Evaporation Utilizing Solar and Electrically Driven Systems

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