سال انتشار: ۱۳۹۰

محل انتشار: اولین کنفرانس بین المللی رویکردهای نوین در نگهداشت انرژی

تعداد صفحات: ۷

نویسنده(ها):

farshad mogharrab tehrani – Islamic Azad University Natanz Branch, Isfahan, Iran

چکیده:

In recent years, phase change emulsion (PCE) is a novel kind of heat storage and heat transfer fluids Phase Change Materials (PCMs) are ideal products for thermal management solutions. This is because they store and release thermal energy during the process of melting & freezing (changing from one phase to another). When such a material freezes, it releases large amounts of energy in the form of latent heat of fusion, or energy of crystallization. Conversely, when the material is melted, an equal amount of energy is absorbed from the immediate environment as it changes from solid to liquid. Phase change materials (PCMs) are used in building envelopes in many forms. That may be used in discrete pouches or containers, or they may be distributed within another medium. In addition, most PCM products are blends containing fire retardants and chemical stabilizers. However, the current test method to measure the dynamic characteristics of PCMs, the differential scanning calorimeter (DSC), requires specimens that are relatively uniform and very small. The limitations of DSC test results when applied to more complex PCM building envelope applications, This paper presents this new methodology for performing dynamic heat flow analysis of complex PCMenhanced building materials.