Mechanical & Industrial Engineering: Recent submissions
Now showing items 261-280 of 1462
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Heat transfer analysis of regenerative thermo-mechanical refrigeration system
( American Society of Mechanical Engineers (ASME) , 2020 , Conference)Refrigeration systems contribute to the critical environmental concerns including global warming and ozone depletion. It is necessary to develop new systems that use renewable energy resources and waste heat to perform the ... -
Economical study by determining the optimum thickness of insulation of some heaters utilized in Qatar refinery
( International Information and Engineering Technology Association , 2008 , Article)Some furnaces and heaters utilized in the industry in Qatar (such as Qatar Refinery) are analyzed economically by the determination of the optimum thickness of insulation for each of these equipments. Different common ... -
Combined effect of global warming and buildings envelope on the performance of ground source heat pump systems
( Springer Link , 2014 , Book chapter)Heating and cooling systems as well as domestic hot water account for over 50 % of the world’s energy consumption. Due to their high thermal performance, ground source heat pump systems (GSHP) have been increasingly used ... -
Soil-concrete interface properties subjected to temperature changes and cycles using direct shear tests
( American Society of Civil Engineers Library (ASCE Library) , 2017 , Conference)Geothermal foundations (energy piles) combine the structural function of deep foundations with the ground source heat exchangers to transfer geothermal energy to superstructures. The intermittent operation of the geothermal ... -
Validation of CFD simulation for flat plate solar energy collector
( Elsevier , 2007 , Article)The problem of flat plate solar energy collector with water flow is simulated and analyzed using computational fluid dynamics (CFD) software. The considered case includes the CFD modeling of solar irradiation and the modes ... -
Numerical solutions of two heat transfer limits of MFM square duct flow using MatLab program
( Taylor & Francis , 2009 , Article)The heat transfer of a magneto-fluid-dynamics (MFM) laminar flow in an electricallyinsulated square duct subjected to two boundary condition limits of constant heat flux and constant wall temperature is examined numerically. ... -
Determination and selecting the optimum thickness of insulation for buildings in hot countries by accounting for solar radiation
( Elsevier , 2004 , Article)Determination and selecting the optimum thickness of insulation is the prime interest of many engineering applications. One of those applications is insulating buildings with an appropriate insulation. Calculations have ... -
Analysis of the effect of global climate change on ground source heat pump systems in different climate categories
( Elsevier , 2015 , Article)Ground source heat pump (GSHP) systems exhibit high thermal performance. Consequently, they are increasingly used to heat and cool buildings. The thermal performance of GSHP systems strongly depends on the operation ground ... -
Comparison between different measures to reduce cooling requirements of residential building in cooling-dominated environment
( Elsevier , 2014 , Article)In hot climate region like Arabian Peninsula, air conditioning systems are the major energy consumer. Therefore, there are compelling reasons to study the energy requirements in buildings sector to reduce the energy ... -
Numerical study of magneto-fluid-mechanic combined free-and-forced convection heat transfer
( Elsevier , 1998 , Article)Fully-developed, laminar, steady, free-and-forced convection heat transfer in an electrically-conducting fluid flowing in an electrically-insulated, horizontal, circular pipe (with its wall subjected to a uniform heat flux) ... -
Highly accurate solutions of a laminar square duct flow in a transverse magnetic field with heat transfer using spectral method
( The American Society of Mechanical Engineers (ASME) , 2005 , Article)A liquid metal forced-convection fully developed laminar flow inside a square duct, whose surfaces are electrically insulated and subjected to a constant temperature in a transverse magnetic field, is solved numerically ... -
Mitigation of urban voids in traditional neighborhoods: The case of the Al-Najada zone in Doha, Qatar
( Elsevier , 2023 , Article)Urban voids and leftover spaces challenge the urban development of cities and result in land vacancy and other spatial planning issues. Such spaces have great potential for innovative intervention through piece-by-piece ... -
Integrated novel solar distillation and solar single-effect absorption systems
( Elsevier , 2021 , Article)Novel hybrid single-slope solar distillation systems integrated with single-effect solar absorption cooling system are designed, analyzed and optimized for production of cooling effect and freshwater, simultaneously. The ... -
Potential of ground source heat pump systems in cooling-dominated environments: Residential buildings
( Elsevier , 2015 , Article)For countries in the Arabian Peninsula, air conditioning (A/C) systems account for 65% of the energy consumption, all of which comes from fossil fuel. Given the preparation for the 2022 World Cup, which will be held in ... -
Laboratory-scale pull-out tests on a geothermal energy pile in dry sand subjected to heating cycles
( National Research Council of Canada , 2020 , Article)Ground source heat pumps coupled with energy piles operate intermittently, subjecting the piles to temperature cycles throughout their lifetime. The research presented in this paper focuses on studying the thermomechanical ... -
A framework for the analysis of damage and recovery characteristics of asphalt mixtures
( Taylor & Francis , 2020 , Article)This study presents two approaches for evaluating damage and recovery characteristics of asphalt mixtures. The first approach focuses on determining damage by extracting recoverable viscoelastic strain that has no damage ... -
Measurements of laminar flame speeds of alternative gaseous fuel mixtures
( American Society of Mechanical Engineers (ASME) , 2015 , Article)Global warming and the ever increasing emission levels of combustion engines have forced the engine manufacturers to look for alternative fuels for high engine performance and low emissions. Gaseous fuel mixtures such as ... -
Scalar dissipation rate statistics in turbulent flows using Planar Laser Induced Fluorescence measurements
( Elsevier , 2012 , Article)A shearless mixing layer with isotropic decaying turbulence has been examined with a turbulent axisymmetric opposed-jet flow and a plume in pipe flow. The study has been carried out experimentally with Planar Laser Induced ... -
Autoignition of n-heptane in a turbulent co-flowing jet
( Elsevier , 2015 , Article)N-heptane autoignition in turbulent co-flowing jets with preheated air is studied using the one-dimensional turbulence (ODT) model. The simulations are designed to investigate the effects of molecular and turbulent transports ... -
Optimized intake manifold designs and their effects on the operation and emissions of a gas-to-liquid diesel engine
( American Society of Mechanical Engineers (ASME) , 2020 , Conference)Two simultaneous strategies have been used in this work to reduce the diesel engine emissions. First, using novel manifold designs to generate strong turbulence and improve the fuel-air mixing inside the cylinder. The ...
