figures Figure 1 preparation of the electrolyzer module 6 Figure 2 Filling the syringe with distilled water 7 Figure 3 Placing inner containers 7 Figure 4 Connecting tubes 8 Figure 5 Using fuel cells and solar panel 8 Figure 6 Inserting batteries 10 Figure 7 Assembling electrical fans 10 Figure 8 Connecting the motor to reversible fuel cell 11 Figure 9 Using solar panel 11 Introduction Hydrogen derived from renewable sources such as wind and solar is clean, self-sufficient and a permanent energy solution for sustainable development. A kilogram of hydrogen is roughly equivalent to a gallon of gasoline in energy content. (Johanna L, 2007) This makes hydrogen a technology of the future in reducing reliance on imported fuel and greenhouse gas emissions. Hydrogen could be produced from fossil fuels using steam reforming, which emits CO2 and expensive ways such as catalytic cracking without CO2 emissions. This pathway is more cost-effective. Water electrolysis is an efficient and expensive way because of its high electricity requirement. For instance, a study (Khan M.J., Iqbal M.T., 2005) stated that assuming an electricity cost of $0.05/kwh, nearly nowadays price of wind produced electricity; hydrogen made from water electrolysis costs more than $2.84/kg based on higher heating value. Hydrogen produced from photovoltaic is also expensive because of high PV electricity cost.( Sherif S.A. et al, 2005) Wind produced electricity, on the other hand, is becoming more competitive nowadays. Therefore, it can produce less expensive hydrogen. Electrolysis: The general principle in electrolysis is that water is supplied to an electrochemical cell, and hydrogen evolves at the anode while oxygen evolves at the cathode when the supplied energy is greater than the zero current cell potential. Alkaline electrolysis is commercially available technology. It takes place at a temperature around 800C and pressure of 1-30bar.( US department of energy, 2010) Fuel cells: Fuel cells are electrochemical devices that convert chemical energy in fuel to electrical energy with high efficiency and low environmental impact. Because combustion is avoided, they produce power with minimum pollution. They contain electrodes anode and cathode separated by an electrolyte. Fuels such as hydrogen or hydrogen rich synthesis gas, are supplied to the anodes while the oxidant is fed to the cathodes. The most common oxidant is oxygen from air. Electrochemical reaction occurs in the electrolyte producing current while deriving external load.( Fuel cell Handbook, 2010) Materials and Methods Preparation of the Electrolyzer Module and Solar Powered Hydrogen Production 1. Insert the reversible fuel cell, terminals on top, into the slot on the base. Cut 2 x 4cm length pieces of rubber tube and insert a black pin into the end of one tube. Place the tube with the black pin into the top pin on the hydrogen side (with black terminal). Place the other tube firmly onto the top input nozzle on the oxygen side. Figure 1 preparation of the electrolyzer module 2. Fill
Technical report on hydrogen experiment Abstract A use of production of solar hydrogen has been demonstrated using a solar hydrogen kit. First preparation of the Electrolyzer Module and Solar Powered Hydrogen Production system has been demonstrated. The used of battery bank in case there is no sun has been shown…
There are up to 355,000 companies involved in construction, where as 192,404 of which are contractors. It is estimated that contractors alone have a gross annual output of around ?70 billion (Xiao Xiao, 2006). The construction industry majorly compromise of sectors such as Housebuilding sector 38.6%, Infrastructure 9.2%, Commercial construction 18%, Industrial construction 5.3% and other allied sectors.
Researchers have been working on the development of wireless technologies for the automation of homes and different establishments since many years. It is due to the increasing desire of automation that Zigbee Alliance introduced Zigbee protocol in the domain of wireless sensor networks.
Contents Contents 3 Introduction 4 Evaporative Cooler Fridge 5 Construction 5 Working 6 Sorption Heat Driven Coolers 7 Construction 7 Working 7 Heating Phase 8 Refrigeration Phase 8 Cycle Time 9 Efficiency of Cooling 9 Uses 10 Drawback 10 Conclusion 11 References 12 Introduction Refrigeration is considered almost a basic necessity by all the people in the developed world.
Therefore, the path followed to get the products does not matter since the energy used or consumed is the same irrespective of path. For example when you burn Carbon in excess Oxygen or in little Oxygen and then Carbon monoxide in little Oxygen the end product will be Carbon dioxide and the energy summation is the same in the two paths.
And one of the avenues, which will aid this process of ‘movement’, is the academic qualification and the resultant employment. An individual will select his/hers field of academic study based on the employment opportunities, that field will offer. But,
Computer malware can be sometime very disturbing not only to the proper operation of a computer system but also to the computer user. Being that most of this malware are intentional crafted in order to have some fishy benefits to those involved it should be noted
However majority of the mankind which lives in the developing or third world countries has just recently woken up to the benefits of refrigeration. As these countries continue to grow rapidly, their people will require
The 3D scanners help in creating the point clouds. The instruments help in measuring the exact number of points that may exist on a surface. The result is always output in a form of a data file. The 3D scanning process is critical in