No abstract

No abstract

No abstract

In this study, naphthalene heat pipes were produced and filled with different materials to test the heat transfer performance. The relationship between the pipes' diameters, liquid content, wall temperature distribution, and transmission power was studied. An explosion test was designed to assess the operating temperature limit of the naphthalene heat pipes. The results demonstrated an optimum filling amount to optimize the pipes' heat transfer performance. In practical applications, it is very important to strictly control the wall temperature of naphthalene heat pipes. When the wall temperature of the evaporation section reaches approximately 600°C, they can easily explode.

Abstract.A numerical software analysis of the turbulent and strongly swirling flow field of a cyclone separator with downward exhaust gas and its performances is described. The ANSYS 14.0 simulations based on DPM model are also used in the investigation. A new set of geometrical design has been optimized to achieve minimum pressure drop and maximum separation efficiency. A comparison of numerical simulation of the new design confirm the superior performance of the new design compared to the conventional design.The influence of the structure parameters such as the length of the guide pipe, the shape of the guide, the inlet shape on the separation performance was analyzed in this research. This research result has certain reference value for cyclone separator design and performance optimization.

The effects of leaching parameters on the composition of the adsorbent derived from steel slag is studied in this study, and the CO 2 capture characteristics and cyclic stability of the derived adsorbent under the effect of the element composition are also investigated. The results show that well-developed pore structure of derived adsorbents are obtained compared with the raw steel slag. The calcium content in the adsorbent significantly increases after leaching, improving the CO 2 capture ability of the derived adsorbents. The Fe, Si, and Al contents decrease, while the Mg and Mn contents change little after leaching, which increases the cyclic stability of the derived adsorbent compared to that of analytically pure CaO. Under the optimized working conditions, the initial CO 2 capture ability of the derived adsorbent is 0.61 g CO2 /g-sorbent. The deactivation ratio of the sample after 20 cycles is 52.46%, showing good performance compared to that of analytically pure CaO.

In the present work, a commercial CFD software package, FLUENT, was used to develop a three-dimensional model of pusher-type billet reheating furnace for the second high speed wire rod plant of XiangTan Iron and steel Co. Ltd. The purpose of the study was to gain a better understanding of the gas flow and velocity and pressure distribution in the furnace. The results show that the numerical results are in agreement with the practice and the characteristics of the furnace configuration. The CFD model can be used to improve the performance and structure by analyzing and studying the behavior of the reheating furnace.

No abstract