EÇEM Direktörü ve Makina Mühendisliği Bölüm Başkanı Prof. Dr. M. Pınar Mengüç, 5. ASME Micro/Nanoscale Heat & Mass Transfer International – MNHMT-16 Konferansı’na davetli konuşmacı olarak katılıyor.
3-6 Ocak 2016 tarihlerinde Singapur’da gerçekleşecek konferans ASME (The American Society of Mechanical Engineers) sponsorluğunda Nanyang Teknoloji Üniversitesi ve Xian Jiaotong Üniversitesi tarafından ortak düzenlendi.
Prof. Mengüç, bu konferansta davetli (plenary) konuşmacı olarak ‘An Overview of Near- and Far-Fieled Radiative Transfer for Radiative Cooling’ başlıklı sunumu yaptı.
Konferans hakkında detaylı bilgiye bu linkten ulaşabilirsiniz; www.asme.org/events/mnhmt
AN OVERVIEW OF NEAR- AND FAR-FIELD RADIATIVE TRANSFER FOR RADIATIVE COOLING
- M. Pinar Menguc
Professor, Ozyegin University
Effective cooling of structures, from buildings to electronic equipment, is one of the most crucial bottlenecks towards energy efficiency efforts. The task is definitely complex and interdisciplinary as it requires advanced material studies to tailor their spectroscopic response to the desired outcome, and structuring the surfaces at nano-scales to utilize plasmonic interactions. With the recent advances in nano-fabrication techniques, researchers and engineers can now design experimental systems with altered surface geometries. This ability, along with the improved understanding of plasmonic behavior materials, surfaces with different spectroscopic characteristics can be designed and constructed. This means that, in principle it is possible to tune the spectral absorption, emission and reflection/scattering characteristics of a surface. Once the desired properties are available, radiative cooling of structures can be achieved and thermal energy management can be optimized to have higher level of energy conservation. However, these approaches are very expensive and require significant know-how. . In this presentation, we will review the literature for radiative cooling and outline the recent developments in materials and structures. It will also include our recent findings for applications both at nano-scale level and for buildings. We will discuss the impact of these studies on radiative transfer calculation for both the far- and near-field energy transfer. The understanding and effective use of near-field radiative transfer (NFRT) will be discussed, which is based on electromagnetic wave theory. By using the governing Maxwell’s equations, the deep physics behind NFRT can be uncovered. Then, the variations in spectral, directional as well as near-field features can be used for applications to new devices and processes. Accurate and fast numerical simulations of (NFRT) with the desired radiative properties of surfaces and structures are crucial for the technology to reach maturity and to be used extensively. Consequently, along with the developments of the theoretical and physical basis of near-field radiative transfer, new numerical techniques need to be developed for the solution of governing equations. These numerical studies will be highlighted. The presentation will also address the development of sustainable and inexpensive materials to be used at larger scales, from building to industrial systems.