The Influence of Wind Velocity and Wind Distribution on the Double Skin Façades with Different Width Corridors in DSF Cavities | Chapter 1 | New Ideas Concerning Science and Technology Vol. 13

The building facade is critical to achieving thermal comfort and energy conservation. A Double Skin Facade (DSF) is a two-layer envelope system with an external and internal layer that contains a buffer space for controlled ventilation and solar protection. Transparency and the use of glass have become appealing facade options in architectural design as a result of technological advances. Glass facades on buildings can provide outdoor views, an abundance of natural light, and the potential for natural ventilation. Double skin façades (DSF) are architectural elements that are becoming more popular in modern buildings. They were created as an alternative technology.to improve the thermal performance of conventional fully glazed buildings. Also they have been widely used as a way to reduce the thermal instability of inner spaces caused by the growing use of large glazed areas in buildings. This concept has provided the possibility of improved sound insulation, preheating air for ventilation, and protection of solar shading in urban areas. DSF’s can achieve reduction of winter heating requirements. However, when the building is under summer conditions or located in moderate or hot climates, heat gains are predominant and the cost of cooling becomes a major issue. The improvement of the system is necessary when working under hot climatic conditions.This is especially true when the façade must function in either extreme or moderate summer conditions. The thermal overheating characteristics of a specific type of DSF in various configurations, as well as their practical control, have not been subjected to systematic experimental and computational investigations. Previous research suggested that using ventilated facades contributes to energy savings from indoor thermal gains. The use of a ventilated channel lowers temperatures in the facade, but indoor thermal conditions must be evaluated in relation to this.as part of the system's compliance with building requirements, to the facade configuration The majority of the research on a facade and energy-comfort modeling combination is limited to a single DSF typology. This study attempts to assess the indoor thermal comfort of a mechanically ventilated building with a DSF configuration. The purpose of this research is to determine the effect of wind velocity and wind distribution on mechanically ventilated buildings with DSF configurations, in order to determine whether a DSF configuration will provide better thermal comfort through natural ventilation. Another goal of this research is to look into the performance of a new DSF configuration for a -as part of the system's compliance with building requirements, to the facade configuration The majority of the research on a facade and energy-comfort modeling combination is limited to a single DSF typology. This study attempts to assess the indoor thermal comfort of a mechanically ventilated building with a DSF configuration. The purpose of this research is to determine the effect of wind velocity and wind distribution on mechanically ventilated buildings with DSF configurations, in order to determine whether a DSF configuration will provide better thermal comfort through natural ventilation. Another goal of this research is to look into the performance of a new DSF configuration for a -The thermal comfort statuses of different width corridors with double skin facades were analyzed using the CFD program in this study. To investigate the thermal comfort inside the building, the thermal comfort indices, PMV and PPD values, were calculated in both FloEFD and Design Builder.

Author (S) Details

Assoc. Prof.Dr.EnesYasa

Department of Int. Architecture, Faculty of Architecture, Istanbul University, Beyazid, Fatih, Istanbul, Turkey.

View Book :-https://stm.bookpi.org/NICST-V13/article/view/1762

 

CFD Simulation of Mixing in Rotary Energy Recovery Device | Chapter 8 | New Approaches in Engineering Research Vol. 6

 In desalination, the rotary energy recovery device (RERD) is commonly used to reduce system energy usage. Simulation was used to examine the fluid dynamics and mixing performance of a standard structure RERD and a visualisation apparatus of an RERD (V-RERD) in this work. It had been studied the influence of rotating components on fluid dynamics and mixing. The flow fields in the device duct show a whirling flow, according to simulation results. The swirling flow changed its rotating direction near the centre of the duct in the RERD example, whereas it remained unchanged in the V-RERD case. Then, to quantify the degree of swirl intensity, a swirling number Sn was employed, and the formation mechanism in RERD was discussed. The Q criteria was also used to view three-dimensional flow configurations and locate vortex forms in the duct. The evolution of vortices during the manufacturing process was studied. Vortices were discovered to have a substantial impact on mixing performance, and a detached vortex could cause excessive turbulence and mixing in the duct. Reduced flow turbulence and a reduced volumetric mixing rate can be achieved by suppressing vortex shedding.

Author(s) Details

Kai Liu
College of Petroleum Engineering, Yangtze University, Wuhan 430100, China.
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China.

Lixing Zheng
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030013, China.

View Book :- https://stm.bookpi.org/NAER-V6/article/view/2492

Advanced Study on Comprehensive CFD Simulation of the Ladle Cycle toward Lining Service Life Optimization | Chapter 4 | Recent Developments in Engineering Research Vol. 9

 In order to move molten steel from a steel making furnace to a continuous casting unit, refractory-lined ladles are used in steel mills. The aim of this study is to optimise the ladle cycle to increase the service life of the liner. A deeper understanding of the lining thermal conditions during the varying stages of the ladle cycle via a mathematical simulation of the process will accomplish this optimization. To predict the ladle lining and steel shell temperature during the full ladle cycle, a 2D axisymmetric mathematical model was developed. The calculated steel shell temperature of a freshly lined ladle during the drying and preheating process was in good agreement with the literature and expectations of the factory. The model's capacity to predict the lining temperature background during the ladle cycle has been shown in this present work. This strength will be used to increase the service life of the ladle lining and strengthen the cycle procedure. To decrease the irregular lining temperature variance, this study suggests making some improvements in the current ladle cycle procedure. It is also recommended to upgrade the preheating burners for adequate drying/preheating of the lining. This will then increase the service life of the liner and reduce the rate of refractory consumption.

Author (s) Details

Dr. Mansour Al-Harbi
SABIC Technology Center-Jubail, P.O.Box 11669, Jubail Industrial City 31961, Saudi Arabia.

Abdullah Al-Nefai
SABIC Affiliate, P.O.Box 36536, Jubail Industrial City 31961, Saudi Arabia.

Sami Al-Jarallah
SABIC Affiliate, P.O.Box 36536, Jubail Industrial City 31961, Saudi Arabia.

Abdullah Al-Dossary
SABIC Affiliate, P.O.Box 36536, Jubail Industrial City 31961, Saudi Arabia.

Yannam Jagan
SABIC Affiliate, P.O.Box 36536, Jubail Industrial City 31961, Saudi Arabia.

View Book :- https://bp.bookpi.org/index.php/bpi/catalog/book/351