Mechanical Engineering

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Auto Traking Solar System
(2007) Bader Sharaf; Hasan Osta; Hani Sadder; Bashir M.Y NOURI
Palestine is considered a poor country in the sources of fossil fuel (power), nowadays this fossil power prices are escalating to unprecedented levels, which is not affordable by our economy especially that the demand on this type of power is increasing, in other words the prices of oil is expected to go higher & higher.. which our citizens can not withstand , As long as Palestine is a sunny country, the most suitable solution for our poverty in fossil fuel is to look for the means that allow us to utilize the free power of the sun. Upon the studies conducted on solar power it is noticed how huge is the quantity of unutilized solar power, as a result of our negligence to this vital & free source of power. Compared to the other projects which were built to utilize the solar power, our project is:- 1. Applicable: it is easy to manufacture, the raw material used to fabricate it isavailable & it needs no operators. 2. Efficient: the incident rays of the sun remain perpendicular on the plate (panel) all the day over, which actually means that the output power is the highest attained. 3. Low running cost: because the operation cost is merely negligible. For the above mentioned justifications we believe that our project is practical & cheap. We hope that the university will adopt it one of the leading projects that its students have created.
DESIGN OF MEDICAL WASTE INCINERTOR INTEGRATED WITH DEASINLATION
(2007) Mahmoud Abdul L. Assad; Ahmad M. Jarrar; Ahmed al-Ramahi
In Palestine Medical waste is one of the most important environmental problems that are facing Palestinian national authority (PNA) in the last few years. The disposal of garbage and medical waste is a problem that continues to grow with the development of industrialized nations and the growth of population. Since the beginning of the people have needed to find a way of disposing of the trash. In 18th century England and France, carters were paid by individuals to carry trash and discard it on the outskirts of town. Disposal in open pits became routine and Benjamin Franklin initiated the first municipal cleaning program in Philadelphia in 1757. Since then we have come a long way and have developed types of waste that cannot simply be dumped into a hole. The purpose of this study was first, to study the construction of incinerator integrated with distillation water for Nablus city. Second, increase awareness about Mechanical and thermal design. The results of the study reveal that:1. The total Quantities product from Nablus hospitals approximately 810Kg/day.2. There is no heat recovery system attached with medical incinerators in Palestine. 3. The study also shows that the heat product from the medical incinerator can be used to produce distillate water at flow rate of 900kg/hr.
THE OVEN DESIGN
(2009) Shade M. Shirri; Adham M.A Barroq; Hilal F.D. Isbaih; Mohammed Abu-Hilal (on leave)
The bread industry has since ancient times, it can not dispense with the bread, is the most important source of food , the bread industry has evolved, and started making bread by putting metal flat plate on the fire and then putting dough above it, It then became a profession. There are two types of bakeries, semi-automatic and full- automatic, by semi-automatic bakeries each process separate from the other as the mixture process is making without respect to other as well as cutter, rounder and etc, on the other hand, by full-automatic bakeries each process is making with respect to other by sensors system. A bakery consists of several parts (Dough mixing, Cutting, Rounding, Rolling and Baking). In our project we focus only on the design on an oven for baking of bread. This oven will be dedicated for Arab bread of a diameter of 15 cm to accommodate 14 loaves which must stay in the oven for a period ranging from 60 seconds to 80 second, at a temperature between (200-250C). The metal used is steel with thermal conductivity K=45.3 W/m.C and density =7854 kg/m We chose bread oven project because of two reasons: 1) Bread ovens in the Palestinian market was manufactured by blacksmiths who do not have the scientific skills in engineering design and production, which may be one reason for the poor in thermal efficiency of the furnace, which reduces the profits to the owners of these ovens and bread prices becomes more and more. For this reason we decide to make the development of our society that increase the Palestinian furnace efficiency to save the energy and increase the profits of ovens owners. 2) Palestinian countryside of Palestinian society used to make bread by primitive methods and the kind of hardship, they plant wheat fields for this purpose, in our oven we will decrease the size and material used to achieve a cheep family oven which withstand the need of the Palestinian villages homes, small markets and restaurants, This furnace produces 81.3 kg of bread in one hour.
Speech Recognition Control
(2009) Jafar M.S Qamhyeh; Karem M.Masri; Khaled F. Bani Fadel; Mohammed M. Abu-Issa; Bashir M.Y NOURI
The main objective in this project is to make insure MATLAB codes that will be formed as a complete program that will record a voice command which specified in the four chosen words (GO, STOP, BACK, LEFT) and analyzing it then recognize it , then that will send a suitable code into parallel port (LPT1) at will be a command suitable for the spoken word this command will control the robotic car which communicated with computer by the radio waves. This p1oject consists of three main parts which can be simplified as following: 1- Software: that will record the signal and make suitable processing on it. 2- Wireless communication: link to transfer the command from the computer to the robotic car. 3- Hardware: This can be summarized in the robotic car.
Design and Construction of Absorption Cooling Device Using Waste Energy
(2009) Bashar Shahrorui; Ameed Qutob; Sead Tubaileh; Abdelrahim Abusafa
In this study the possibility of using waste heat to operate a small size air cooling device was investigated. Such devices are proposed to be used in automobile air conditioning systems that utilize either the rejected heat from the exhaust gases or the engine cooling water. Two different alternatives of heat exchanger types was proposed, they are: air-water system, and water-water system. The last type was used due to small surface areas. The designed absorption Refrigeration cycle uses LiBr2-watre pair as the working fluid.The proposed device was designed and constructed successfully using the proper metals. The main components were: evaporator, generator, condenser, absorber, and tow expansion valves. Many difficulties were faced during the operation of the device as result of the operating conditions since such cooling systems working pressure is 91 kPa vacuums. It was difficult to operate the cycle continually due the failure of the used pump under deep vacuum pressure. As a result the cycle was operated discontinuously and a 2oC temperature drop in the cooled water was observed for a single cycle operation for cold water flow rate of 0.0254 kg/s. It was concluded that such cooling device needs special type of throttling valves that work under very small pressure drop and vacuum conditions. Moreover the locations of the input and output lines from each component should be selected carefully to sure good self regulating level control of the liquid.
THE OVEN DESIGN
(2009) Shade M. Shirri; Adham M.A Barroq; Hilal F.D. Isbaih; Mohammed Abu-Hilal (on leave)
The bread industry has since ancient times, it can not dispense with the bread, is the mostimportant source of food , the bread industry has evolved, and started making bread by puttingmetal flat plate on the fire and then putting dough above it, It then became a profession .There are two types of bakeries, semi-automatic and full- automatic, by semi-automaticbakeries each process separate from the other as the mixture process is making without respect toother as well as cutter, rounder and etc, on the other hand, by full-automatic bakeries eachprocess is making with respect to other by sensors system.A bakery consists of several parts (Dough mixing, Cutting, Rounding, Rolling andBaking). In our project we focus only on the design on an oven for baking of bread.This oven will be dedicated for Arab bread of a diameter of 15 cm to accommodate 14loaves which must stay in the oven for a period ranging from 60 seconds to 80 second, at atemperature between (200-250C). The metal used is steel with thermal conductivity K=45.3W/m.C and density =7854 kg/mWe chose bread oven project because of two reasons:1) Bread ovens in the Palestinian market was manufactured by blacksmiths who do nothave the scientific skills in engineering design and production, which may be one reason for thepoor in thermal efficiency of the furnace, which reduces the profits to the owners of these ovensand bread prices becomes more and more. For this reason we decide to make the development ofour society that increase the Palestinian furnace efficiency to save the energy and increase theprofits of ovens owners.2) Palestinian countryside of Palestinian society used to make bread by primitive methodsand the kind of hardship, they plant wheat fields for this purpose, in our oven we will decreasethe size and material used to achieve a cheep family oven which withstand the need of thePalestinian villages homes, small markets and restaurants, This furnace produces 81.3 kg ofbread in one hour.
HVAC SYSTEM DESIGN JENIN HOSPITAL
(2010) Sameer hajyousif; Naser Odwan; Sameer kittaneh; Loai abuhaneia
The aim of this project is to design installation of heating, ventilation and air condition system (HVAC) for the ( JENIN HOSPITAL) which well be built in Jenin city / Palestine. The hospital consists of two floors. There are different rooms inside the hospital such as , Patient Room, Bacteriology lab, Blood bank kitchen, Incubators, Staff Rooms, Doctors Rooms. HVAC system provides comfortable and clean healthy environment free of germs and diseases could harm the patient and the peoples inside the hospital to achieve comfort inside the hospital. Many requirements must be taken in the building structure. First providing a insulation systems for various hospital walls and windows that will reduce the amount of heat lost into the building. This habitual be established with the construction of the building including the development of insulation material and spaces inside the wall and the selection of quality glass where the heat transfer through it can be reduced. Second providing appropriate adjustment temperatures and moisture in absent of adores, and are able to purify the air inside the building so that the atmosphere inside the building suitable for patient healthy stable and relax. In addition adjustment to the hospital devises in order to protect them from damage and to give accurate results and therefore accurate treatment. Third existing of fire alarm system and fire fighting system to keep the hospital safe from fire this system is very essential to provide early detection of the fire and extinguished it in its initial stages. In addition to the HVAC system, water services and plumbing design is required, the availably of water service system inside the building the hot or cold water, this service can be achieved by the selecting the right size of piping and tubing for fixtures of drainage system prevent the hose from the hazard leakage, pollution, the medical gas system consisting of a central supply system (manifold, bulk, or compressors), including control equipment and piping extending to station outlets in the facility where medical gases may be required, the medical vacuum system consisting of central vacuum-producing equipment with vacuum switches and operating controls, shutoff valves, alarm warning system, gauges, and network of piping extending to and terminating with station inlets at location where patient suction may be required. Includes surgical vacuum systems, waste anesthesia gas disposal (gas scavenging systems), and beside suction systems.
THE PIONEER MACHINE FOR READING AND WRITING USING BRAILLE SYSTEM
(2010) Amr S.Khayyat; Fathi Abu Saleh; Isam Zareefa; Mahdi Ishtaya; Bashir M.Y NOURI
People with disabilities have abilities too and that is what this course is all about - making sure those abilities blossom and shine so that all the dreams you have can come true. [1] Mary McAleese 1951The Braille system, named after Louis Braille, is a method widely used by blind people enabling them to read and write. Each Braille character, or so called "cell", is made up of six dot positions, arranged in a rectangle containing two columns of three dots each. A dot may be raised at any of the six positions to form sixty-four combinations, counting the space, in which no dots are raised.Braille language is the main language blind adults and kids use. We created a method which can facilitate the reading and writing of Braille language mainly for kids. However, the current Braille systems have many limitations and obstacles such as its size and overlapping the characters ,resulting in difficulties of understanding and applying the language particularly for blind kids and those with low vision.THE NEW BRAILLE READING-WRITING MACHINE principle is based on the classical Braille language. It is considered as an adjuvant method to better understand the Braille language. This device will be used to rise above the limitations of reading and writing in Braille system. The currently used small size characters and the overlap between these characters are the major difficulties the students who lost their sight at old age or people with low vision face with the classical way used in the classical Braille language.Therefore, the machine will enable the blind to write and read at the same time. In addition, it will help the people with low vision by lighting the alphabets to ease reading the language for them. Thus, this device will help blind and low vision students all over the World.
wind turbine design and evaluation
(2010) Kamel Husein Iweida; Mohammad Husam Barham; Mohsen Mohammad Marie; Mustafa Saleh Ali; Ramez Ibrahim Mohammad Abdallah
In this project wind turbine system will be constructed to generate power to supply electricity for buildings demands and batteries .In the first part of the project blades of the wind turbine will be designed and manufactured based on the specific of the wind generator.In the second parte of the project the wind turbine will be installed on roof of scientific centers building and then the wind turbine will be connected by wire into control unite in the energy research center (ERC) , the control unit will be connected with batteries and inverter .The third part of the project data of the wind speed will be measured by using anemometer , at the same time the value of current and voltage will appear on the computer screen which interface with PIC , then the data obtained will be tabulated and analyzed.According to results, The average of wind speed in the site have a value of 6 m\s and the maximum out put power generated from wind turbine was at this speed equals 170 W, the annual energy obtained from wind turbine equals1489.2 kwh the wind turbine life is about 20 years So, the average energy obtained from wind turbine during life cycle of turbine is about 29784 kwh , the total cost of wind turbine system was $ 6750 during life cycle after calculation the cost of one kwh is $0.226 = 0.85 NIS.The system combined with the controlling system (Whisper Controller) having the basic functions which are, rectification, regulation, and resistive power dumping. The output current from controller was DC current , the controller was connected with PIC that include ( current sensor , voltage sensor ) the PIC interfaced with wind sensor and connected in the computer to show the data on computer screen , the system also connected with inverter to invert the current from DC to AC , the final part of the system was batteries that storing the additional electricity .In the final part of the project , the availability of using such a system in other area in Palestine will be discussed taking into consideration ,environmental , and other concern .
Mechanical System for school of optical
(2010) Abdulla alawneh; islam salahat; Mohammed jaber; Majdi shwawra; Iyad Assaf (Department Head)
The aim of this project is to design installation of heating, ventilation and air condition system (HVAC) for the school of optical which will be built in Nablus city / Palestine. The school consist of six floors, two floor up the ground, three basement and aground. There are different rooms inside the building such as meeting room ,computer room ,laboratory ,guest room ,staff lounge ,clinic, waiting rooms , offices(dean and other ),stores ,class rooms, video conference ,break area and stage, secretary rooms, and kitchen and the last thing is (electrical room, pump room, mechanical room ,control room, generator room, transformer room. as shown in appendix(I)HVAC system provides comfortable and clean healthy environment free of germs and diseases could harm the student and the peoples inside the school of optical l to achieve comfort inside the school. Many requirement must be taken in the building structure. First providing a insulation systems for various school. walls and windows that will reduce the amount of heat lost into the building. This habitual be established with the construction of the building including the development of insulation material and spaces inside the wall and the selection of quality glass where the heat transfer through it can be reduced. Second providing appropriate adjustment temperatures and moisture in absent of adores, and are able to purify the air inside the building so that the atmosphere inside the building suitable for people stable and relax. In addition adjustment to the school devises in order to protect them from damage and to give accurate results and therefore accurate treatment. Third existing of fire alarm system and fire fighting system to keep the faculty safe from fire this system is very essential to provide early detection of the fire and extinguished it in its initial stages.In addition to the HVAC system, water services and plumbing design is required, the availably of water service system inside the building the hot or cold water, this service can be achieved by the selecting the right size of piping and tubing for fixtures of drainage system prevent the hose from the hazard leakage, pollution, the medical gas system consisting of a central supply system (manifold, bulk, or compressors), including control equipment and piping extending to station outlets in the facility where medical gases may be required, the medical vacuum system consisting of central vacuum-producing equipment with vacuum switches and operating controls, shutoff valves, alarm warning system, gauges, and network of piping extending to and terminating with station inlets at location where patient suction may be required. Includes surgical vacuum systems, waste anesthesia gas disposal (gas scavenging systems), and beside suction systems.
Mechanical Systems of Al- Karmel Residential Building
(2010) Ibthal Adeeb; Wala Shaar; Ramez Ibrahim Mohammad Abdallah
HVAC (pronounced either "H-V-A-C" or "aitch-vak") is an acronym that stands for the closely related functions of "Heating, Ventilating, and Air Conditioning"- the technology of indoor environmental comfort. HVAC system design is a major subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers). HVAC is particularly important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and healthy building conditions are regulated with temperature and humidity, as well as "fresh air" from outdoors.BackgroundThe invention of the components of HVAC systems went hand-in-hand with the industrial revolution, and new methods of modernization, higher efficiency, and system control are constantly introduced by companies and inventors all over the world. The three central functions of heating, ventilating, and air-conditioning are interrelated, providing thermal comfort, acceptable indoor air quality, within reasonable installation, operation, and maintenance costs. HVAC systems can provide ventilation, reduce air infiltration, and maintain pressure relationships between spaces. How air is delivered to, and removed from spaces is known as room air distribution.[1]In modern buildings the design, installation, and control systems of these functions are integrated into one or more HVAC systems. For very small buildings, contractors normally "size" and select HVAC systems and equipment. For larger buildings, building services designers and engineers, such as mechanical, architectural, or building services engineers analyze, design, and specify the HVAC systems, and specialty mechanical contractors build and commission them. Building permits and code-compliance inspections of the installations are normally required for all sizes of buildings.[citation needed]The HVAC industry is a worldwide enterprise, with career opportunities including operation and maintenance, system design and construction, equipment manufacturing and sales, and in education and research. The HVAC industry had been historically regulated by the manufacturers of HVAC equipment, but Regulating and Standards organizations such as HARDI, ASHRAE, SMACNA, ACCA, Uniform Mechanical Code, International Mechanical Code, and AMCA have been established to support the industry and encourage high standards and achievement.
Mechanical System for The Old City Historical Research Center
(2010) MOATH ALI SAWAFTA; Mohammed Abed AL_RAHMAN HAMMAd; Iyad Assaf (Department Head)
Since heating and air conditioning field is widely used in daily life for human comfort, our project deals with heating and air conditioning design for a selected floors of The Historical Research Center that sits in Nablus. This project applies all the engineers needed to design heating and air conditioning. No soft wares used in calculations of heating load in this project air, but method of hand calculating takes along place in the project. More than one EXCEL sheet included in the project for estimating heating and air conditioning parameters and loads. The improvements in the project restricted to using local codes and information which widely used during any process of heating and air conditioning design. This project enhances the group of designed students to go to head for filled with heating and air conditioning calculations and design. Further more, it provides other students and engineers the principles of heating and air conditioning design. Completely design achieved with traditional methods of heating and air conditioning calculations and thus desired results of loads values and suitable equipments verify a good view of design and calculations.
MOLE ROBOT
(2010) Nidal Al-Barq; Faisal Naeem; Mostafa Rabaia; Bashir M.Y NOURI
This project aims to design a robot which can be able to entering the sewer tube.From this functionality it has the name of MOLE ROBOT. This project integrates Mechanical design and hydraulic power for motion and control. Designing of MOLE ROBOT passed through stages. Finally, this robot will operate by a hydraulic power that is more effective.
Under Floor Heating For Residential Building Using Solar Energy
(2010) Mohammed Radi Suleiman; Ali Hussain Ali; Ramez Ibrahim Mohammad Abdallah
Introduction: Palestine is characterized by a climate of bitter cold in winter, which we need engineers search for solutions to architectural, mechanical, thermal, environmental and low cost. Given the high cost of electricity and other energy resources floated the idea of this system which relies on solar energy by a large and provides a lot. This research aims to study the principles of design for the villas to rely on the heating system under floor heating and environmental requirements and natural resources of the villa and choose the most appropriate location that meets these requirements and specifications and then exit through the recommendations of this study. *The design of the building has been done in a way that provides natural comfort with minimal need for HVAC systems. The main criteria for the design were: 1- Maximize heat gain in winter via passive solar system and proper insulation, 2- Minimize heat gain in summer via proper shadowing, proper insulation and adequate ventilation. *These criteria can be achieved in the residential Building of Nablus Zone with the following parameters: 1- High insulation of all external walls, slabs and basement floor 2- Proper shading of sunshine in summer that will allow sunshine to penetrate glazing areas in winter 3- Proper natural ventilation for summer 4- Moderate thermal mass of the building 5- Use of Passive and Active solar system for heating the building in winter and increasing air ventilation in summer. Site: The site occurs in Nablus city, surrounded by villas from the two directions ( east and north ) and a 5m width street from south, and the site area is (800) m. The building consists of a basement with an area of (121) m, and a ground floor with an area of (270) m, and a first floor with an area of (180) m. An application of the solar energy system is used called (Under Floor Heating) for heating in winter and ventilating in summer.
ORANGE JUICER
(2010) Ashraf Adnan Sheikh Ali; Tareq Jamel Msameh; Mohammed Abu-Hilal (on leave)
The main idea of our project is to make a system which responsible for all the new technology in our modern life and added a new idea with new technology to our modern life, in which it can make the topic what we want to talk about easier. Our project is an orange juicer which can by itself and its design separate the orange pieces and cut them after that squeeze them before it finally through them out, all of that by a special design will be discussed step by step in our project and thats is the main idea of our project. The advantages of our project is to make the operation of juicing oranges by separate, cut, squeeze and through out the juiced pieces more easy, and depend on one bottom, addition it can squeeze more than twenty pieces of orange in one minute, and it can be used in homes, hotels and the markets which makes several juice. During our project, the project itself will be passed through three stages, soft ware design by using AUTOCAD and MECHANICAL DESKTOP programs, wooden and cartoon model and finally the final model made by steel and plastic apparatus. Our project has many topics to be discussed that we have been studied during bachelor of mechanical engineering in several courses such as mechanical engineering design, machinery, statics, dynamics, and mechanical vibration. Finally, it will be a trial do it with full of effort and we hope to be a good idea and a good graduation project for all whom helped us to reach this stage of study and for our country, our university, mechanical engineering department and for all people.
ALBAHRAIN PEDIATRIC HOSPITAL
(2010) Abed Al KareemAl fanni; Ismat A. Fakhouri; Mohammed K. Hussein; Saleh Tayseer Obeid; Ramez Ibrahim Mohammad Abdallah
The aim of this project is to design installation of heating, ventilation and air conditioning system (HVAC) for Al-Bahrain Pediatric Hospital which sits in Ramallah city / Palestine. The hospital consists of four floors, three floors up the ground, one basement and a roof. There are different rooms inside the hospital such as , operating rooms , medical records, patients preparation ,laboratory ,photography and laser sessions ,staff lounge ,pharmacy, waiting rooms , offices ,locker rooms ,nurse stations, wards, secretary rooms, cafeteria and kitchen as shown in appendix(I)HVAC system provides comfortable and clean healthy environment free of germs and diseases could harm the patient and the peoples inside the hospital to achieve comfortconditions inside the hospital, manyrequirements must be taken in the building structure. First providing insulation systems for various hospital walls and windows that will reduce the amount of heat loss into the building, this habitual be established with the construction of the building including the development of insulation material and spaces inside the walls and the selection of quality glass where the heat transfer through it can be reduced. Second providing appropriate adjustment temperatures and moisture in absent of adores, and are able to purify the air inside the building so that the atmosphere inside the building is suitable for patient healthy stable and relax. In addition adjustment to the hospital devises in order to protect them from damage and to give accurate results and therefore accurate treatment. Third existing of fire alarm system and firefighting system to keep the hospital safe from fire, this system is very essential to provide early detection of the fire and extinguished it in its initial stages.In addition to the HVAC system, water services and plumbing design is required, the availably of water service system inside the building hot or cold water, this service can be achieved by selecting the right size of piping and tubing for fixtures of drainage system prevent the hose from the hazard leakage, pollution, the medical gas system consisting of a central supply system (manifold, bulk, or compressors), including control equipment and piping extending to station outlets in the facility where medical gases may be required, the medical vacuum system consisting of central vacuum-producing equipment with vacuum switches and operating controls, shutoff valves, alarm warning system, gauges, and network of piping extending to and terminating with station inlets at location where patient suction may be required. Includes surgical vacuum systems, waste anesthesia gas disposal (gas scavenging systems), and beside suction systems.
Water Desalination
(2010) Ahmad Odeh; Ali Abbass; Mohammad Aliyat; Mohammad Suliman; Bashir M.Y NOURI
Wastewater treatment is the process of removing contaminants from wastewater and household sewage, both runoff (effluents) and domestic. It includes physical, chemical, and biological processes to remove physical, chemical and biological contaminants. Its objective is to produce a waste stream (or treated effluent) and a solid waste or sludge suitable for discharge or reuse back into the environment. This material is often inadvertently contaminated with many toxic organic and inorganic compounds. Solar energy is quite simply the energy produced directly by the sun and collected elsewhere, normally the Earth. The sun creates its energy through a thermonuclear process that converts about 650,000,0001 tons of hydrogen to helium every second. The process creates heat and electromagnetic radiation. The heat remains in the sun and is instrumental in maintaining the thermonuclear reaction. The electromagnetic radiation (including visible light, infra-red light, and ultra-violet radiation) streams out into space in all directions. A solar still operates on the same principle as rainwater: evaporation and condensation. The water from the oceans evaporates, only to cool, condense, and return to earth as rain. When the water evaporates, it removes only pure water and leaves all contaminants behind. Solar stills mimic this natural process . Solar still has a top cover made of glass, with an interior surface made of a waterproof membrane. This interior surface uses a blackened material to improve absorption of the sun's rays. Parabolic trough technology is used to produce heat to replace conventional energy used to heat water and air, to generate steam and to produce air-conditioning.Below is an explanation of the concept of parabolic trough solar collectors, factors that influence their design and the practicality and usefulness of the technology to meet a wide range of energy requirements. The parts of the trough system and its working:The parabolic trough reflector: The cylindrical parabolic reflector reflects incident sunlight from its surface onto the receiver at the focus point. Typically, the reflector is made of thick glass silver mirrors formed into the shape of a parabola. Alternatively, mirrors can be made from thin glass, plastic films or polished metals.The receiver tube or heat collection element: The receiver tube consists of a metal absorber surrounded by a glass envelope. The absorber is coated with a selective coating to maximize energy collection and to minimize heat loss. The glass envelope is used to insulate the absorber from heat loss, and is typically coated with an anti-reflective surface to increase the transmittance of light through the glass to the absorber. For high temperature CSP applications, the space between the absorber and glass tube is evacuated to form a vacuum.
Effect of Damping on Simple Vibrational Systems
(2011) Eyad Maaly; Jafar Robu; Huthaifa Nahawi; Rafat Ghannam; Mohammed Abu-Hilal (on leave)
Abstract In this project we will discuss four type of damping by mention the definition for each one and talking in generally about their characteristics and the way to measurement for each one and study the effect for each one on the vibration system we mean free and force vibration system. In chapter one we will definition the damping and mention the type of damping that we will study in our project and in chapter two we will talk about the viscous damping and some characteristics for it and how it effect on free and vibration system and In chapter three we will also talk about the second type of damping (Coulomb Damping) and how it effect on the free and force vibration system and in chapter four we will talk about the Hysteresis Damping by mention three model for it and discus the way that it effect on free and vibration system and in chapter five we will talk in generally about magnetic damping and we will in last chapter discuss application of damping by designing a simple advice (measurement device) to calculate the ( ) damping ratio for viscous damping and how we can used it to know the type of the fluid.
Mechanical System for Building of Palestinian Telecommunication Group "Paltel Group"
(2011) Ameed Mahmoud Qzaih; Mohammad Mustafa Yaseen; Samer abdelrazaq Khanfar; Iyad Assaf (Department Head)
Mechanical System for AL-ASRIA COLLEGE
(2011) Hashem Ihsan Janajrh; Mohammad Ghalib Abu Sarah; Sari Khaled Sobeh; Ahmad Medhat Attia; Iyad Assaf (Department Head)
Abstract The aim of this project is to design installation of heating, ventilation and air condition system (HVAC) for the Al-Asria college which well be built in Ramallah city / Palestine. The college consists of nine floors, six floors up the ground, tow basement and a roof. There are different rooms inside the college such as , operating rooms , medical records ,laboratory ,,staff lounge ,pharmacy, waiting rooms , offices ,locker rooms ,exams rooms , library, bed rooms, secretary rooms, cafeteria and kitchen as shown in appendix(3). HVAC system provides comfortable and clean healthy environment free of germs and diseases that harm the patient and the peoples inside the college. Many requirements must be taken in the building structure. First; providing an insulation system for various college walls and windows that will reduce the amount of heat lost into the building. This habitual be established with the construction of the building including the development of insulation material and spaces inside the wall and the selection of quality glass where the heat transfer through it can be reduced. Second; providing appropriate adjustment temperatures and moisture in absent of adores, and are able to purify the air inside the building so that the atmosphere inside the building suitable for student healthy stable and relax. In addition adjustment to the college devises in order to protect them from damage and to give accurate results and therefore accurate treatment. Third; existing of fire alarm system and fire fighting system to keep the college safe from fire this system is very essential to provide early detection of the fire and extinguished it in its initial stages. In addition to the HVAC system, water services and plumbing design is required, the availably of water service system inside the building the hot or cold water, this service can be achieved by the selecting the right size of piping and tubing for fixtures of drainage system prevent the hose from the hazard leakage, pollution, the medical gas system consisting of a central supply system (manifold, bulk, or compressors), including control equipment and piping extending to station outlets in the facility where medical gases may be required, the medical vacuum system consisting of central vacuum-producing equipment with vacuum switches and operating controls.

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