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melt fractions and medium connectivity in the Himalaya-Tibetan crust

Earthquake Research Advances 2021年第S1期1卷 13-15页

作者： Hui Liu Xiaoping Wu School of Earth and Space sciences University of Science and Technology of ChinaHefei230026China

Seismic and magnetotelluric field campaigns carried out across the Himalaya and the Qinghai-Tibetan Plateau show mid-crustal low resistivity and low-velocity *** these anomalies indicate that there are molten zones present in the Tibet crust is a focus of geophysical and petrological *** interpretations of MT data to infer melt fractions are often based on presumed electrical conductivity values of partial ***,pressure,especially water content in the melt influences the melt conductivity and affects the inferred melt fractions in areas of *** accurate constraints are *** addition,a variety of equations have been proposed to model the conductivity of partially molten rocks in Tibetan ***,different rock electrical models relate to different lithological parameters of *** we need to find an appropriate rock electrical model that can apply to Tibet *** this study,we use a general electrical conductivity model developed by the global fitting of experimental data in previous study and set up a range of temperature,pressure,and water content for five regions in ***’s more,using three widely used rock electrical models to figure out corresponding melt fractions in areas of *** find the most applicable rock electrical model in this region and know better about the distribution and morphology of medium in Tibetan crust.

关键词： Partial melt Electrical conductivity model melt fraction Qinghai-Tibetan

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Numerical Analysis of Phase Change and Container Materials for Thermal Energy Storage in the Storage Tank of Solar Water Heating System

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Journal of Thermal Science 2024年第2期33卷 408-421页

作者： SINGH Shailendra ANAND Abhishek SHUKLA Amritanshu SHARMA Atul Non-Conventional Energy Laboratory Rajiv Gandhi Institute of Petroleum TechnologyJais Amethi229304India

This study evaluates the effectiveness of phase change materials(PCMs) inside a storage tank of warm water for solar water heating(SWH) system through the theoretical simulation based on the experimental model of *** et *** model is explained by five fundamental equations for the calculation of various parameters like the effectiveness of PCMs,the mass of hot water,total heat content,and duration of *** study simulated eleven PCMs to analyze their effectiveness like Sodium hydrogen phosphate dodecahydrate(SHPD),OM 37,N-Eicosane(NE),Lauric acid(LA),Paraffin wax(PW),OM 48,Paraffin wax C_(20-33)(PW-C20-33),Sodium acetate trihydrate(SAT),Palmitic acid(PA),Myristic acid(MA),and Stearic acid(SA).Among all PCMs,the SHPD has found the highest value of effectiveness factor of ***,it is the most recommended PCM for the storage tank of the SWH *** study also includes the melt fraction analysis of all enumerated PCMs corresponding to container materials of stainless steel,glass,aluminum mixed,tin,aluminum,and *** melt fraction analysis is performed by making a coding program in the FORTRAN programming *** the analysis,copper container material is found to have high melting rate for all PCMs so it is superior to other container materials.

关键词： theoretical model solar water heating system phase change material effectiveness factor melt fraction

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