Papers by Keyword: Thermal Emission

Abstract: The effectiveness of the use of the synthesizable aluminosilicates in cement composites as the modifying additive, regulating the structurization and increasing the operational properties of cement systems is investigated. Nature of change of the index рН of a liquid phase of cement systems with the use of the synthesized aluminosilicates is studied. The information about a thermal emission kinetics at hardening cement composites are provided. One of the priorities of the modern building materials science is the development of efficient building materials with the high operational properties. The solution of this problem base on purposeful formation of the material structure as heterogeneous, multiphase system of the complex hierarchy. One of the directions of properties management of this system is the modification of their structure by nanosized particles [1, 2, 3].

Abstract: Peculiarities of temperature variations on the surface of a solid under static loading are experimentally studied. We show how the surface temperature of the material under deformation is related to the stage of plastic flow and fracture. The found mechanisms can be applied to the material diagnostics during their deformation.

Abstract: Cylindrical launcher is widely used on the battlefield. Characteristic is easy handling, facilitate multigang outfit, cluster launch, emission rate and better generalization and standardization, etc. This paper mainly studies the thermal emission process of a cylindrical launch, the unsteady numerical simulation of the process, using computational fluid dynamics software GAMBIT and FLUENT, and the concept of dynamic grid and updating method of a certain type of cylindrical equipment vertical thermal emission process. Through to the launcher unsteady numerical simulation of the flow field of the guide surface pressure distribution contours, which lay a foundation for the study of the structure of this type of equipment. At the same time it is for the equipment launcher applicability related research to provide the reference.

Abstract: A thermal emission layer was coated on the aluminum chassis of a concentrator photovoltaic (CPV) module. The cell temperature in the CPV mini-module with the white thermal emission coating was 3 - 5°C lower than that in the CPV mini-module without the thermal emission coating. The effect of the high-radiation layer was remarkable. In spite of the high emissivity of the black thermal emission coating, the effect of the black coating was not remarkable. This is because the scattered light from environment is absorbed by the black coating and the CPV mini-module is heated. The color of CPV is important and the white coating is better than the black coating.