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Conference
2023
Design of DC Solar Water Pump for Farmers in the Kurdistan Region of Iraq
2023-07
2nd International Conference on Engineering and Advanced Technology AIP conference proceeding
This study will focus on the Kurdistan region of Iraq. Irrigation is an essential of agriculture, and the process of irrigation takes place by transfer of water from water source to farm. However, energy is the main aspect to consider when carrying out the irrigation process. Due to shortages of electricity and the high cost of diesel, there are difficulties in meeting the demands of irrigation. In this study, solar energy is considered as one way to design a solar water pump that can be used on farms in the Kurdistan region of Iraq. Photovoltaic solar panels have been assessed as a way to provide a successful solar water pump system with a minimum cost. The weather conditions for Duhok city in Kurdistan have been analysed to assess the solar water pump system for local use. The outcome of this study revealed that the solar water pump is applicable and can provide many benefits for the use of clean and renewable energy to transfer water from a water source to farms in the Kurdistan region of Iraq. A proposed design system with cost analysis is provided as an outcome of this study.
Effect of various vent layouts on air distribution inside a control zone: CFD simulation
2023-07
2nd International Conference on Engineering and Advanced Technology AIP conference proceeding
Computational Fluid Dynamic (CFD) is executed to study the effect of inlet air duct position on the indoor air velocity distribution. A CFD pattern has been generated for varied air duct point placements. Reynolds averaged Navier–Stokes equation (RANS) and the standard k-epsilon k-ε transport equations were utilized to estimate the streamline of the air inside a control zone. The control zone has a certain size of 5 m length, 4 m width, and 3 m height. The simulations results revealed that the position of the air duct supply and return duct significantly affected the distribution of velocity and temperature inside the control zone. The best airflow distribution has been achieved when the inlet air supply duct and the return air duct are located at the ceiling position.
Natural Convection from a Horizontal Cylinder Placed in a Square Enclosure: CFD Simulations
2023-07
4 th International Scientific Conference of Engineering Sciences and Advances Technologies (IICESAT)
Natural convection from a horizontal cylinder placed in a square enclosure is numerically investigated using two different fluids as heat transfer medium. Water and air are used as two different heat transfer mediums. The diameter and length of the cylinder are 50 mm and 500 mm respectively. The cylinder is placed in a square enclosure of 300 mm x 300 mm. Range of operating conditions covered different surface temperature from 303 K to 414 K. Two-dimensional Computational Fluid Dynamic (CFD) approach is used to predict the natural convection from the horizontal cylinder at different range of surface temperature with different heat transfer mediums. The Nusselt number is estimated and compared with the experimental result which is obtained from previous study with maximum absolute percentage error of 13%. The results show that the surface temperature has a direct and significant effect on the Nusselt number when the cylinder is surrounded by air as a medium for the heat transfer with maximum velocity varied from 0.007 m/s to 0.11 m/s. Conduction heat transfer mode is the dominant mod when the cylinder is surrounded by water with maximum velocity of 0.3 m/s. at surface temperature of 350 K
The application of a single slope solar still in a refinery wastewater treatment: An experimental study
2023-07
1ST INTERNATIONAL CONFERENCE ON ACHIEVING THE SUSTAINABLE DEVELOPMENT GOALS
An alternative resource for energy and water has become essential to ensure long-term sustainability. Industrial wastewater is one of the main environmental challenges which could affect one’s life, due to its related pollution. Using solar distillation systems could be the key solution to treating industrial wastewater. In this work, an experimental apparatus was fabricated and tested according to Al-Samawa city climate conditions, to treat the oily-waste water from a refinery. Two different sources of raw wastewater samples with different physical and chemical characteristics were used. Five different runs were performed on different days in November at a sunshine time between (10 AM – 2 PM). The results of the condensate water showed that TDS was reduced by 94 %, conductivity reduced by 95 % and PH increased from an average value of 6.4 to 7.4.
Design of DC solar water pump for farmers in the Kurdistan region of Iraq
2023-07
2nd International Conference on Engineering and Advanced Technology
This study will focus on the Kurdistan region of Iraq. Irrigation is an essential of agriculture, and the process of
irrigation takes place by transfer of water from water source to farm. However, energy is the main aspect to consider when
carrying out the irrigation process. Due to shortages of electricity and the high cost of diesel, there are difficulties in meeting
the demands of irrigation. In this study, solar energy is considered as one way to design a solar water pump that can be
used on farms in the Kurdistan region of Iraq. Photovoltaic solar panels have been assessed as a way to provide a successful
solar water pump system with a minimum cost. The weather conditions for Duhok city in Kurdistan have been analysed to
assess the solar water pump system for local use. The outcome of this study revealed that the solar water pump is applicable
and can provide many benefits for the use of clean and renewable energy to transfer water from a water source to farms in
the Kurdistan region of Iraq. A proposed design system with cost analysis is provided as an outcome of this study.
2022
INVESTIGATING THE ACOUSTIC PROPERTIES OF RECYCLED NATURAL WASTE MATERIALS
2022-03
2nd International Conference on Engineering and Advanced Technology AIP conference proceeding
Natural materials (NMs) which include fibers and/or particles are porous materials. The NMs have specifications make them valuable in sound absorbing. The NMs are environmentally and friendly materials which have zero effect on environment. Composite sandwich plates are designed in this study using different types of NMs in contribution with glass fibers and polyester. The Composite sandwich plates are designed in three different thickness, 6 mm, 8 mm, and 10 mm using Dried Cooked Tea Leaves DCTL, Husks of Fresh Beans FBH, Egg Peels EP, Garden’s Sand GS, Wood Fiber WF, Chicken Feathers CF and Palm Fronds PF. These composites are tested and investigated as sound insulating materials. A test rig is designed and prepared to be operated at different frequencies. Sound waves are measured experimentally considering the sound pressure level (SPL) to estimate the transmission losses (TL) and coefficient of transmission losses (TC) which are emitted from a function generator. The experimental results revealed that the best transmission losses are recorded for the samples that fabricated by using Palm Fronds, Wood Fiber, Garden’s Sand and FBH at 10 mm thickness. At high frequencies, the TL for these samples is greater than that of neat random fiberglass samples by 195%, 155%, 133%, 116% and 92%, respectively. The results also revealed that other two natural materials (DCTL and CF) have acceptable results but with less percentages compared with the other samples, the percentages are 50% and 45% for the DCTL and CF, respectively.
2020
Effect of Radiation on Natural Convection Heat Transfer from Heated Horizontal Cylinder in Vented Enclosure
2020-12
IOP Conference Series: Materials Science and Engineering
The natural convection heat transfer from a heated circular cylinder placed in a square
vented enclosure was investigated considering the effect of the thermal radiation from cylinder using
finite volume method with simple algorithm that used pressure-velocity coupling to solve NavierStockes and energy equations using Computational Fluid Dynamics CFD (Fluent software). The flow
domain is filled with air. The enclosure width is 12.5 cm, two symmetrical openings at its lower and
upper walls with size O = 2.5 cm and the cylinder diameter is 5 cm. Different rang of cylinder’s
surface emissivity with Rayleigh number range between 103
to 106 was applied in this study as
operating condition. The effect of the Ra, cylinder radiation for vented square enclosure on the
convection, radiation and total Nusselt numbers Nu and flow and thermal patterns were investigated.
The numerical results for pure natural convection were compared with available experimental results,
good agreement was obtained. The results revealed that the natural convection heat transfer from the
cylinder in the enclosure is increased as compared with that of the unbounded cylinder without
radiation effect. The results also revealed that there is a linear relationship between the heat transfer
enhancement and the emissivity, there is a significant effect of the cylinder surface radiation which
gives high augmentation compared with that of the free cylinder and natural convection heat transfer
without radiation effect. A maximum total Nusselt number is obtained at high emissivity compared
with that of natural convection heat transfer, the maximum Nu enhancement ranged between 70 to
350 % for low Ra and 25 to 125% for high Ra
Effect of surface radiation heat transfer on natural convection heat transfer from heated circular cylinder in a cold vented enclosure
2020-09
3RD INTERNATIONAL CONFERENCE ON RECENT INNOVATION IN ENGINEERING (ICRIE) 2020
The natural convection heat transfer from a hot circular cylinder placed in a square vented enclosure was investigated considering the effect of the thermal radiation using Computational Fluid Dynamics (CFD). Different rang of cylinder’s surface emissivity was applied. Range of Rayleigh number from 103 to 106 was used for the CFD operating condition. The results revealed that the natural convection heat transfer increased compared with that of the unbounded cylinder without radiation effect. The results also revealed that there is a linear relationship between the heat transfer enhancement and the emissivity, there is a significant effect of the surface radiation which gives high augmentation compared with that of the free cylinder and natural convection heat transfer without radiation effect. The case of the CFD results were compared with available experimental results, good agreement was obtained. A maximum total Nusselt number is obtained at high emissivity compared with that of natural convection heat transfer, the maximum Nu enhancement ranged between 70 to 350 % for low Ra and 25 to 125% for high Ra.
Effect of surface radiation heat transfer on natural convection heat transfer from heated circular cylinder in a cold vented enclosure
2020-09
3rd International Conference on Recent Innovation in Engineering
The natural convection heat transfer from a hot circular cylinder placed in a square vented enclosure was investigated considering the effect of the thermal radiation using Computational Fluid Dynamics (CFD). Different rang of cylinder’s surface emissivity was applied. Range of Rayleigh number from 103 to 106 was used for the CFD operating condition. The results revealed that the natural convection heat transfer increased compared with that of the unbounded cylinder without radiation effect. The results also revealed that there is a linear relationship between the heat transfer enhancement and the emissivity, there is a significant effect of the surface radiation which gives high augmentation compared with that of the free cylinder and natural convection heat transfer without radiation effect. All the CFD results were compared with available experimental results, good agreement was obtained. A maximum total Nusselt number is obtained at high emissivity compared with that of in natural convection heat transfer, the maximum Nu enhancement was 70%.
A Review of a Mechanical Vapour Compression Refrigeration System: Environment and Performance Challenge
2020-04
International Multi-Disciplinary Conference Theme:“Sustainable Development and Smart Planning”, 10 April 2020, Antalya, Turkey.
Refrigerants effects on the environment and system performance of the refrigeration system have been reviewed. This paper presents a review of different studies which were carried out in air conditioning and refrigeration systems. It explores a deeper understanding of mechanical vapour compression systems and alternative refrigerants that could be used instead of HCFC and CFC in future systems. This paper concludes that alternatives refrigerants such as mixtures and natural refrigerants are the alternative refrigerants to protect the environment. These alternatives show effective performance when used in refrigerant and air conditioning systems and its application and use in the future.
Assessment of a Sustainable Building using Eco-Friendly Insulation Materials
2020-01
740th International Academic Conference on Engineering, Technology and Innovations (IACETI), 8th-9th January 2020, Brisbane, Australia.
In air conditioning and refrigeration, insulation materials are essential in building insulation to achieve high
performance and reduce energy consumption. However, nowadays, environment concerns have been increased as a result of
using petrochemical insulation materials. The petrochemicals insulation materials have a direct effect on the environment as
a result of using non-renewable materials, fossil energy consumption, and to the disposal stage. Eco-friendly insulation
materials are the solution to decrease the environment concerns and build a sustainable building. Eco-friendly insulation
materials have been used in this work to assess and compare its effectiveness in building insulations. Four eco-friendly
insulation materials which excited by the nature were used in wall insulation. The overall heat transfer coefficient U was
used to assess and compare the insulation efficiency. The basic wall configuration was used in comparison. The results
revealed that the eco-friendly insulation material have effective insulation efficiency and can be used to reduce the energy
loss through a walls by 50%.
2019
CFD Instraction Guide to Simulate Two-Phase Flow Separation in a Vertical T-Junction Separator
2019-02
International Conference on Recent Innovations in Engineering and Technology (ICRIET)- 6th-7th February 2019.
Two-phase flow separation has been investigated by many researchers due to its important role in the most application in industry. In refrigeration and air conditioning systems, two-phase flow separation influence the system performance. So, many techniques have been used to separate liquid phase from gas-liquid two phase flow and consequently to improve a system performance. T-junction is one of the techniques that can be used to obtain effective two-phase separation. In order to investigate the two-phase flow separation in very simple way and obtain wide accurate range of results, computational work is the best solution. Computational Fluid Dynamics (CFD) software is one of the most effective computational way that can be used to visualise two-phase flow separation. Instruction of CFD simulation to predict and visualize the two-phase flow separation in T-junction will be presented in this paper. ANSYS 17.1 was used to carry out the simulation. The geometry of the T-junction was generated by the ANSYS modular design, then lunched to the ANSYS meshing to generate a suitable mesh.
Investigation Study of the Inlet to Body Diameter Ratio of a Vertical Flash Tank Separator using Computational Fluid Dynamic (CFD)
2019-02
International Conference on Science, Engineering and Technology (ICSET) / 20th February 2019.
The vertical flash tank separator improves the heat transfer coefficient in the evaporator of the mechanical
refrigeration system. However, enhancing and improving the performance of the vertical flash tank separator need further
investigation. In order to provide an optimum design and performance of a vertical flash tank separator, this paper provides
an investigation study to present the effect of the inlet to body diameter ratio (d/D) of the vertical flash tank separator on the
separator’s performance. Computational Fluid Dynamic (CFD) was used to design the optimum ratio configuration. The
results revealed that the d/D has significant effect on the liquid separation efficiency. The CFD simulations give a good
agreement with the experiments, all the simulations underestimated the liquid separation efficiency by approximately 0.02
over the range of conditions tested.
Experimental and Numerical Investigation of Two-Phase Flow Orientation Direction Change on a Vertical Flash Tank Separator
2019-01
ISER 460th International Conference on Heat Transfer and Fluid Flow (ICHTFF), 8th-9th January 2019, Brisbane, Australia.
In refrigeration and air conditioning systems, a vertical flash tank separator is one of the most important component that can be used to improve the system performance. Using vertical flash tank technique improves the effective area and enhances the heat transfer coefficient in the evaporator. However, enhancing and improving the performance of the vertical flash tank separator need further investigation. In order to provide an optimum configuration and performance, this paper provides experimental and numerical investigation of two-phase flow direction change effect on the performance of the vertical flash tank separator. Computational Fluid Dynamics (CFD) was used to assess the effect of flow direction change. Series of experiments were performed to test the CFD proposed configurations. The results revealed that the inlet flow direction has a significant effect on the performance of the vertical flash tank. The CFD simulations gave a good agreement with the experiments, all the simulations underestimated the liquid separation efficiency by approximately 0.02 over the range of conditions tested. ANSYS 17.1 was used to carry out the simulation. The geometry of the vertical flash tank separator was generated by the ANSYS modular design based on the dimensions of experimental test section, then lunched to the ANSYS meshing to generate a suitable mesh.
2007
Experimental investigation of total resistance and heat dissipation from longitudinal fins
2007-10
Conference: 6th Jordanian International Mechanical Engineering Conference (JIMEC)
The experiments covered both the natural convection and forced convection heat transfer modes in order to investigate a wide range of the heat transfer coefficients. The input fluxes to the fins as well as the fin dimensions are also varied over a suitable range to cover a wide range of total resistance values. The results indicated the good agreement between the suggested model and the experimental findings. Calculated and measured heat fluxes were found to be within less than (8.6%) in the natural convection tests and (14%) in the forced convection tests. The maximum experimental error was estimated at (5.7%). A numerical solution, based on the Gauss-siedel technique, was also derived and used to include the range of variable not covered by the experiments
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