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thermal inertia at the MSL and InSight mission sites on Mars

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Earth and Planetary Physics 2022年第1期6卷 18-27页

作者： D.Singh S.Uttam Centre of Studies in Resources Engineering Indian Institute of Technology BombayMumbaiIndia Physical Research Laboratory AhmedabadIndia

For planetary surface materials,thermal inertia is the critical property that governs the surface’s daily thermal response and controls diurnal and seasonal surface temperature *** we use the ground measurements made by the MSL Curiosity rover and the InSight lander to determine the thermal inertia of two sites on *** study compares the variation of thermal inertia during and after the Large Dust Storm(LDS)of Martian Year(MY)*** determine surface thermal inertia,we derive a simple approximation(using energy balance),which utilizes surface albedo,surface energy flux,and diurnal change in the surface *** average thermal inertia in MY34 is about 39.2%,3.7%,and 3.4%higher than MY35 average thermal inertia for the MSL,InSight(FOV1),and InSight(FOV2),***,the thermal inertia at the InSight(FOV1)is consistently lower by about 20 J·m^(-2)·s^(-1/2)·K^(-1) than the InSight(FOV2)site for all scenarios,indicating variation in the region’s surface *** best-fit surface albedo in MY34(determined using the KRC model)are about 0.08,0.05,and 0.03 higher than MY35 surface albedo for the MSL,InSight(FOV1),and InSight(FOV2),*** increase in both surface albedo and thermal inertia during the LDS indicates that the underlying surface is both more thermally resistant and more reflective than the overlying loose dust.

关键词： Mars Mars surface thermal inertia dust storm Mars climate

A Reliability Assessment of an Integrated Energy System Based on Coupling Energy Flow and thermal inertia

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CSEE Journal of Power and Energy Systems 2022年第6期8卷 1772-1783页

作者： Wenxia Liu Tie Ma Yue Yang North China Electric Power University Beijing 102206China

With the wide application of integrated energy systems(IES),the degree of coupling between different types of energy sources is further strengthened,and the mechanism of fault development tends to be ***,in order to improve the accuracy and practicability of the reliability assessment of IESs,a sequential simulation reliability assessment method considering multi-energy flow and thermal inertia is proposed in this *** this method,the IES structure model is constructed with the combined cooling,heating and power(CCHP)unit as the core equipment,combining with the new energy source to realize the comprehensive energy power flow calculation considering any ***,a load reduction optimization model is established,considering the importance of load and operational economy,in the system status ***,the heat supply reliability index is corrected taking into account the transmission delay characteristics and terminal thermal inertia.A case study based on the 20-node and the analysis of the influence factors demonstrates the validity of the proposed method.

关键词： Combined cooling heating and power(CCHP) integrated energy system multi-energy flow calculation reliability assessment thermal inertia

Improved spatial resolution in soil moisture retrieval at arid mining area using apparent thermal inertia

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Transactions of Nonferrous Metals Society of China 2014年第6期24卷 1866-1873页

作者：雷少刚卞正富 John L.DANIELS 刘东烈中国矿业大学深部岩土力学与地下工程国家重点实验室徐州221116 北卡罗纳莱纳大学土木学院中国矿业大学环境与测绘学院徐州221116

A surface soil moisture model with improved spatial resolution was developed using remotely sensed apparent thermal inertia（ATI）.The model integrates the surface temperature derived from TM/ETM＋ image and the mean surface temperature from MODIS images to improve the spatial resolution of soil temperature difference based on the heat conduction equation,which is necessary to calculate the ***,the spatial resolution of ATI and SMC can be enhanced from 1 km to 120 m（TM） or 60m（ETM＋）.Moreover,the enhanced ATI has a much stronger correlation coefficient（R^2） with SMC（0.789） than the surface reflectance（0.108） or the ATI derived only from MODIS images（0.264）.Based on the regression statistics of the field SMC measurement and enhanced ATI,a linear regression model with an RMS error of 1.90%was found.

关键词： soil water content soil temperature difference thermal inertia remote sensing spatial resolution

INNOVATIVE FAÇADES Lightweight and Thin Systems with High inertia for the thermal Comfort Application in Office Buildings in Southern Europe

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Journal of Green Building 2011年第2期6卷 107-121页

作者： Monica Rossi Universitàdegli Studi di Camerino School of Architecture and Design“Eduardo Vittoria”via Lungo Castellano63100 Ascoli PicenoItaly

ABSTRACT This research demonstrates that lightweight,thin façade systems with innovative materials can combine a higher thermal inertia with a lower energy demand for heating and cooling as compared to massive faç*** is therefore very possible to use innovative light materials(originally developed in and for Central Europe)also in Southern Europe,where the main problem is the energy demand for cooling in summer(in contrast to the energy demand for heating in northern latitudes).Three of those systems were selected and investigated for three different climatic conditions in middle latitudes with respect not only to static energy performance parameters imposed by the Italian legislation(thermal transmittance U and superficial mass M_(S)),but also checking two dynamic energy performance parameters defined particularly for non massive structures(phase delay f_(a) and decrement factorφ).Additionally a recently introduced by European standard UNI-EN-ISO-13786 parameter(periodic thermal transmittance Y_(ia))was *** of the energy performance of the façade systems was performed using thermodynamic *** results are:•Development and application of an experimental/simulation procedure for the evaluation of the thermal performance of façade systems in use(annual energy demand:[kWh],costs[€]***_(2) produced[kg]).•Demonstration that energy performance of new lightweight systems is better than the one of a traditional Italian reference façade system with high MS.•Proposal of possibilities for improving the analyzed façade systems with respect to their application in middle latitudes.•Development of design criteria for the application of the analyzed façades in three climatic zones in Italy.

关键词： building envelope thermal comfort thermal inertia dry construction

Theoretical analysis of the surface temperature regulation of an infrared false target subjected to periodical ambient conditions

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Defence Technology（防务技术） 2016年第5期12卷 360-366页

作者： Shi-min LI Hong YE Qi-zhao LIN Department of thermal Science and Energy Engineering University of Science and Technology of China

Infrared false target is an important mean to induce the infrared-guided weapons,and the key issue is how to keep the surface temperature of the infrared false target to be the same as that of the object to be ***-dimensional heat transfer models of a metal plate and imitative material were established to explore the influences of the thermophysical properties of imitative material on the surface temperature difference（STD） between the metal plate and imitative material which were subjected to periodical ambient *** is elucidated that the STD is determined by the imitative material’s dimensionless thickness（dim*,） and the thermal inertia(Pim).When dim* is above 1.0,the STD is invariable as long as Pim is a *** if the dimensionless thickness of metal plate（d,m*） is also larger than 1.0,the STD approaches to zero as long as Pimis the same as the thermal inertia of metal plate（Pm）.When dim* is between 0.08 and 1,the STD varies irregularly with Pim and dim*.However,if dm* is also in the range of 0.08-1,the STD approaches to zero on condition that Pim=Pm and dim*= dm*.If dim*,is below 0.08,the STD is unchanged when Pimdim* is a *** if dm* is also less than 0.08,the STD approaches to zero as long as Pimdim* = Pmdm*.Furthermore,an applicationoriented discussion indicates that the imitative material can be both light and thin via the application of the phase change material with a preset STD because of its high specific heat capacity during the phase transition process.

关键词： Infrared false target Surface temperature Periodical ambient conditions thermal inertia Dimensionless thickness

A comprehensive aerodynamic-thermalmechanical design method for fast response turbocharger applied in aviation piston engines

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Propulsion and Power Research 2024年第2期13卷 145-165页

作者： Yu Zhou Yue Song Shuai Zhao Xueyu Li Longtao Shao Huansong Yan Zheng Xu Shuiting Ding Research Institute of Aero-Engine Beihang UniversityBeijing 100083China Aircraft/Engine Integrated System Safety Beijing Key Laboratory Beijing 100083China School of Energy and Power Engineering Beihang UniversityBeijing 100083China School of Transportation Science and Engineering Beihang UniversityBeijing 100083China AVIC Nanjing Engineering Institute of Aircraft Systems Nanjing 210000China Hangzhou International Innovation Institute Beihang UniversityHangzhou 311115China Civil Aviation University of China Tianjin 300300China

Limited by the poor transient response performance of turbochargers,the dynamic performance of aviation piston engines tends to *** a bid to enhance the turbocharger’s acceleration capabilities,this study scrutinizes various factors impacting its *** on the operational principles and transient response process of the turbocharger,three types of in-ertiadnamely,aerodynamic inertia(ADI),thermal inertia(TI),and mechanical inertia(MI)d are identified and addressed for *** begin,this paper pioneers the innovative definition of a method for evaluating the transient response performance of the *** method incor-porates the introduction of an ADI parameter,inspired by the definition of ***,a thin-walled volute design with a low Biot number and a lightweight turbine impeller is introduced to reduce the turbocharger’s TI and *** simulation results of theflowfield distribution within the volute and diffuser demonstrate the comprehensive design method’s effectiveness in improving gas pressure and temperature distributions in these ***,the pressure distributionfluctuation in the constant moment-of-momentum volute(CMV)is 62.8%lower than that in the constant velocity moment volute(CVMV).The low-TI thin-walled volute not only en-hances the turbocharger’s response speed but also reduces its weight by approximately 40%.The impact of three types of inertia on the engine’s response speed is quantified as follows:ADI(94%)>MI(5%)>TI(1%).This conclusion has been verified through test results of both the turbocharger and the *** design method not only significantly improves the turbo-charger’s response performance but also offers valuable insights for the optimal design of other blade mechanical systems.

关键词： Turbocharger Fast response design method Aerodynamic inertia thermal inertia Mechanical inertia

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第30届国际地质大会学术活动侧记

铀矿地质 1997年第1期 62-64页

作者：张之一

第３０届国际地质大会学术活动侧记张之一第３０届国际地质大会学术计划委员会副主席国际地质大会是一个国际性学术组织。在整个国际地质大会１１８年的历史中（它始于１８７８年），第３０届是首次在中国召开。这标志着今后地学活动的... 详细信息

第３０届国际地质大会学术活动侧记张之一第３０届国际地质大会学术计划委员会副主席国际地质大会是一个国际性学术组织。在整个国际地质大会１１８年的历史中（它始于１８７８年），第３０届是首次在中国召开。这标志着今后地学活动的重心已逐渐向亚洲转移，尤其中国大陆...

关键词： Soil moisture thermal inertia NOAA-AVHRR data

Experimental Study of the thermal Behavior of a Bioclimatic Building Prototype in a Sahelian Zone

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Smart Grid and Renewable Energy 2024年第8期15卷 187-199页

作者： Arouna Kaboré Boukaré Ouédraogo Sayouba Sandwidi Vincent Zoma Hermann Kaboré Kalifa Palm Laboratoire des Energies Thermiques et Renouvelables (LETRE) Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire de Chimie Analytique Physique Spatiale et Energtique (LACAPSE) Universit Norbert ZONGO Koudougou Burkina Faso Laboratoire de Physique et Chimie de lEnvironnement Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire des Systmes dEnergie Renouvelable et Environnement Institut de Recherche en Sciences Appliques et Technologies (IRSAT) Centre National de la Recherche Scientifique et Technologique (CNRST) Ouagadougou Burkina Faso

Buildings constructed with modern materials (cement blocks, sheet metal, reinforced concrete, etc.) in the Sahelian zone often generate excessive electricity consumption and consequently very high electricity bills. This study is a contribution to the development of new building types based on the principle of bioclimatic construction. The aim is to find materials suited to the Sahelian climate and improve thermal comfort. To this end, an experimental study of the hygrothermal behavior of a bioclimatic building prototype with a domed roof is being carried out. Site meteorological data, air temperature and relative humidity of the building’s internal environment were measured for three climatic seasons in Burkina Faso. The data acquisition system consists of thermocouples, solarimeters and humidity meters, and the data are processed using Excel and Origin Pro software. The results show that, despite the high temperature values (between 36˚C and 39˚C) of the internal environment measured in the hot season, good thermal performance is achieved, in particular an average phase shift of 7.17 h and an average damping of 10.81˚C. The dome-roofed building could therefore contribute to limiting heat transmission to the building interior, improving thermal comfort all year round. Analysis of humidity profiles shows that indoor humidity varies between 66% and 80% for the September period, and between 44% and 69% for the January period. The high values of internal ambient humidity could be reduced by very good ventilation of the building. This study shows that the proposed bioclimatic building prototype with domed roof could be integrated into the Sahelian habitat.

关键词： thermal Comfort Hygrothermal Behavior Bioclimatic Building thermal inertia Domed Roof

Study of Construction Techniques and Hygro-thermal Behavior of a Vernacular Earth Building in a Humid Tropical Climate

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Journal of Building Construction and Planning Research 2023年第3期11卷 69-85页

作者： Mouhamadou Nabi Kane Mapathe Ndiaye Emilie Pinard University College of Architecture Dakar (CUAD) University of Thies Thies Senegal Laboratory of Mechanics and Modeling University of Thies Thies Senegal McEwen School of Architecture Laurentian University Sudbury Canada

This study analyzes the know-how of local communities, to draw on techniques that make contemporary buildings more energy efficient. The impluvium hut in the locality of Enampore, Casamance, Southern Senegal, served as the object of study. The hut, including several rooms, is entirely built with earthen walls, earthen floor, earthen ceiling, covered by a double straw roof and its central courtyard. A room noted (L) and a semi-opened living space were chosen as spaces for hygro-thermal experimentation. The hottest average temperature obtained respectively in the room (L) and in the living space is 25.5˚C and 27˚C when outside is about 34˚C. The thermal amplitude inside room (L) is 0.88˚C, in semi-opened living space, is 2.6˚C and outside is 9.5˚C. With these results we can say that room (L) undergoes very low temperature variations and that there is no need to air-condition in the enclosure. The thermal amplitude makes it possible to see the influence of the earthen walls on the interior temperature and its regularity compared to the fluctuation of the external temperature. The thermal inertia of the building walls was characterized using also the time lag and the decrement factor. They was respectively 7.0 H and 0.093 for the room (L). With this result we can say that this material has a high thermal inertia. For humidity, it is high around 78.5% in the room (L), 66.0% at the semi-open living room, when it is 59.0% outside. Through this study, it is possible that the revalorization of vernacular architecture can be an alternative to reduce the energy consumption of buildings.

关键词： Time Lag Decrement Factor thermal inertia Double Skin Impluvium