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Multidisciplinary Engineering for the Utilization of Traditional Automated Storage and Retrieval System )ASRS) for Firefighting in Warehouses
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
1-22
Received:
5 February 2015
Accepted:
6 February 2015
Published:
16 February 2015
Abstract: ASRS is usually installed in a factory or warehouse to increase storage capacity, floor space utilization, labor productivity in storage operations and stock rotations etc. ASRS systems are custom-planned for each individual application, and they range in complexity from relatively small mechanized systems that are controlled manually to very large computer-controlled systems that are fully integrated with factory and warehouse operations. The purpose of the present paper is to gain experience in multidiscipline engineering through the design, fabrication and implementation of ASRS model in a capstone (graduation) project. The scope of the project was extended by considering the fire fighting in ASRS warehouses. In the present project, the students designed, manufactured and implemented an ASRS model. The model was automatically controlled by a microcontroller-based electronic circuit. The students succeeded in designing, building and testing their model. Based on their practical experience, they proposed a new technique for firefighting in ASRS warehouses.
Abstract: ASRS is usually installed in a factory or warehouse to increase storage capacity, floor space utilization, labor productivity in storage operations and stock rotations etc. ASRS systems are custom-planned for each individual application, and they range in complexity from relatively small mechanized systems that are controlled manually to very large...
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Prediction of Smoke Propagation in a Big Multi-Story Building Using Fire Dynamics Simulator (FDS)
Ahmed Farouk Abdel Gawad,
Hamza Ahmed Ghulman
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
23-41
Received:
5 February 2015
Accepted:
6 February 2015
Published:
24 February 2015
Abstract: In the present work, the computational fluid dynamics (CFD) technique was used to predict the fire dynamics in a big three-story building. Important aspects of fire dynamics were investigated such as smoke propagation and temperature distribution. The study aims to decrease the fire hazards by computationally predicting the expected smoke movement in real-life conditions. Consequently, early evacuation plans can be established to save human lives by proper estimation of the smoke direction and density. Also, temperature rise has a potential effect on the safety of both humans and structures. Different factors were considered such as fire location, doors, and emergency openings. Important findings and notable conclusions are recorded.
Abstract: In the present work, the computational fluid dynamics (CFD) technique was used to predict the fire dynamics in a big three-story building. Important aspects of fire dynamics were investigated such as smoke propagation and temperature distribution. The study aims to decrease the fire hazards by computationally predicting the expected smoke movement ...
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Investigation of Unsteady Mixed Convection Flow near the Stagnation Point of a Heated Vertical Plate embedded in a Nanofluid-Saturated Porous Medium by Self-Similar Technique
A. A. Abdullah,
F. S. Ibrahim,
A. F. Abdel Gawad,
A. Batyyb
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
42-51
Received:
5 February 2015
Accepted:
6 February 2015
Published:
24 February 2015
Abstract: This paper aims to study the problem of unsteady mixed convection in a stagnation flow on a heated vertical surface embedded in a nanofluid-saturated porous medium. The employed mathematical model for the nanofluid takes into account the effects of Brownian motion and thermophoresis. The presence of a solid matrix, which exerts first and second resistance parameters, is considered in this study. The self-similar solutions for the system of equations governing the problem are obtained. The resulting system of ordinary differential equations that govern the flow is solved numerically using fourth-fifth order Runge-Kutta with shooting method. Numerical results for the dimensionless velocity, temperature and nanoparticle volume fraction as well as skin friction, Nusselt number and Sherwood number are produced for different values of the influence parameters.
Abstract: This paper aims to study the problem of unsteady mixed convection in a stagnation flow on a heated vertical surface embedded in a nanofluid-saturated porous medium. The employed mathematical model for the nanofluid takes into account the effects of Brownian motion and thermophoresis. The presence of a solid matrix, which exerts first and second res...
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Fire Dynamics Simulation and Evacuation for a Large Shopping Center (Mall): Part I, Fire Simulation Scenarios
Khalid A. Albis,
Muhammad N. Radhwi,
Ahmed F. Abdel Gawad
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
52-71
Received:
31 May 2015
Accepted:
1 June 2015
Published:
15 June 2015
Abstract: Malls like any retailing centers face exposure for a host of risks including fire, which is no stranger to shopping malls. Fires in closed malls, patronized by lots of people, can cause many fatalities among panicked people running and pushing to get out of these burning places and great damage to the property itself. This computational study covers the possibilities of smoke propagation and evacuation due to hazardous fires in a large shopping center (mall) in Makkah, Saudi Arabia. The mall occupies 50,753 m2 and has two main floors. It contains 144 stores in the ground floor and 56 stores in the upper floor. It has five gates, one elevator, four escalators and five emergency exit stairs. The study is divided into two parts. Part I concerns four scenarios of fire simulation. Part II considers corresponding four scenarios of evacuation. The present results explain how fast the smoke may spread in such buildings and its mechanism to move from one floor to another. The smoke propagation/movement is highly affected by the architecture of the building and the type of activities inside it.
Abstract: Malls like any retailing centers face exposure for a host of risks including fire, which is no stranger to shopping malls. Fires in closed malls, patronized by lots of people, can cause many fatalities among panicked people running and pushing to get out of these burning places and great damage to the property itself. This computational study cover...
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Fire Dynamics Simulation and Evacuation for a Large Shopping Center (Mall), Part II, Evacuation Scenarios
Khalid A. Albis,
Ahmed F. Abdel Gawad,
Muhammad N. Radhwi
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
72-78
Received:
31 May 2015
Accepted:
1 June 2015
Published:
15 June 2015
Abstract: Evacuation plans in large malls are very essential in cases of emergency especially fire. Many fatalities may occur among panicked people running and pushing to get out of these burning places. The present study considers evacuation cases corresponding to the fire cases that were considered in part I. It is established that evacuation planning is vital to help people get out of the mall without being exposed to suffocation due to smoke inhaling or having accidents due to panic rush in corridors and over the stairs/escalators.
Abstract: Evacuation plans in large malls are very essential in cases of emergency especially fire. Many fatalities may occur among panicked people running and pushing to get out of these burning places. The present study considers evacuation cases corresponding to the fire cases that were considered in part I. It is established that evacuation planning is v...
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Computational and Artificial Intelligence Study of the Parameters Affecting the Performance of Heat Recovery Wheels
Ahmed F. Abdel Gawad,
Muhammad N. Radhwi,
Asim M. Wafiah,
Ghassan J. Softah
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
79-94
Received:
30 June 2015
Accepted:
1 July 2015
Published:
14 July 2015
Abstract: Heat recovery wheels represent key components in air handling units (AHU) that can be used in commercial and industrial building air-conditioning-systems for energy saving. For example, in health facilities, heat transfer process is to be applied in air-conditioning systems for heat recovery of the exhaust (return) air from the patient's room without contamination. Thus, heat recovery wheels are much suitable for such applications. Heat recovery wheels are also known as heat conservation wheels. A conservation wheel consists of a rotor with permeable storage mass fitted in a casing, which operates intermittently between two sections of hot and cold fluids. The rotor is driven by a low-speed electric motor. Thus, the two streams of exhaust and fresh air are alternately passed through the wheel. The present investigation considers computationally the different parameters that affect the operation of heat recovery wheels. These parameters signify actual operating conditions such as flow velocity, shape of cross-section of flow path, and wall material. Moreover, both the artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) techniques were utilized to predict the critical characteristics of the heat exchange system. These artificial intelligence techniques use the present computational results as training and verification data.
Abstract: Heat recovery wheels represent key components in air handling units (AHU) that can be used in commercial and industrial building air-conditioning-systems for energy saving. For example, in health facilities, heat transfer process is to be applied in air-conditioning systems for heat recovery of the exhaust (return) air from the patient's room witho...
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