نتایج جستجو برای: thermal energy

تعداد نتایج: 846046  

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

احمدیان, محمد, آقا شفیعی, محمد , ابوالقاسمی, معین , مرادی دالوند, محمد , نامور بهرغانی, بهنام ,

The micro-turbines can be used to supply both thermal and electrical energy demands of islanded microgrid. Depleting fossil fuels and ever-increasing environmental concerns have attracted much attention to the renewable energy resources. Meanwhile, the stochastic nature, non-compliance with the load, inability to meet the thermal load and high cost of the wind and solar resources are disadvanta...

This research is aimed to undertake a comparative study on stability and thermal degradation kinetics of un-irradiated and high energy protons irradiated polyvinyl butyral (PVB) based on weight loss analysis and non-isothermal approaches. The weight loss by the un-irradiated PVB upon heating was found to be in two stages but due to high energy protons accelerated exposure following by chemical ...

A.K Vashishth R Kumar, S Ghangas

The fundamental solution of the system of differential equations in bio-thermoelasticity with dual phase lag (DPL) in case of steady oscillations in terms of elementary function is constructed and basic property is established. The tissue is considered as an isotropic medium and the propagation of plane harmonic waves is studied. The Christoffel equations are obtained and modified with the ther...

2012
Caroline M. Williams Katie E. Marshall Heath A. MacMillan Jason D. K. Dzurisin Jessica J. Hellmann Brent J. Sinclair

Increases in thermal variability elevate metabolic rate due to Jensen's inequality, and increased metabolic rate decreases the fitness of dormant ectotherms by increasing consumption of stored energy reserves. Theory predicts that ectotherms should respond to increased thermal variability by lowering the thermal sensitivity of metabolism, which will reduce the impact of the warm portion of ther...

2015
Andrea Acquaviva Daniele Apiletti Antonio Attanasio Elena Baralis Federico Boni Castagnetti Tania Cerquitelli Silvia Chiusano Enrico Macii Dario Martellacci Edoardo Patti

Energy efficiency by means of reduction in wasteful energy consumption is a growing policy priority for many countries. Innovative systems should be designed to continuously monitor a smart city environment and provide all stakeholders the tools to improve energy efficiency. This paper presents the EDEN platform, designed to collect and analyze thermal energy consumption of residential and publ...

In this study, the relationship among the concepts of entropy generation rate, entransy theory, and generalized thermal resistance to the optimal design of thermal systems is discussed. The equations of entropy and entransy rates are compared and their implications for optimization of conductive heat transfer are analyzed. The theoretical analyses show that based on entropy generation minimizat...

Journal: :معماری و شهرسازی 0
سیدمهدی میرهاشمی دانشجوی کارشناسی ارشد رشتة انرژی و معماری، دانشکدة معماری، پردیس هنرهای زیبا، دانشگاه تهران سیدمحمدهادی شاپوریان دانشجوی کارشناسی ارشد رشتة انرژی و معماری، دانشکدة معماری، پردیس هنرهای زیبا، دانشگاه تهران زهرا قیابکلو استادیار دانشکدة معماری، پردیس هنرهای زیبا، دانشگاه تهران

in islamic republic of iran, the heating and cooling of buildings account for approximately 40% of total energy use. from the entire energy loss taking place in a building, one third of that energy loss occurs through the windows. many of today’s existing buildings are not energy efficient, and consume more energy than is needed in order to make the working and living environments comfortable. ...

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