28-09-2016, 12:57 PM
Solar air compressor
28-09-2016, 12:57 PM
Solar air compressor
29-09-2016, 09:33 AM
An Air Compressor is a device that converts power (usually from an electric motor, a diesel engine or a gasoline engine) into kinetic energy by compressing and pressurizing air, which, on command, can be released in quick bursts. There are numerous methods of air compression, divided into either positive-displacement or negative-displacement types. Positive-displacement air compressors work by forcing air into a chamber whose volume is reduced to compress the air. Piston-type air compressors use this principle by pumping air into an air chamber through the use of the constant motion of pistons . They use one-way valves to guide air into a chamber, where the air is compressed. Rotary screw compressors also use positive-displacement compression by matching two helical screws that, when turned, guide air into a chamber, whose volume is reduced as the screws turn. Vane compressors use a slotted rotor with varied blade placement to guide air into a chamber and compress the volume . Negative-displacement air compressors include centrifugal compressors. These use centrifugal force generated by a spinning impeller to accelerate and then decelerate captured air, which pressurizes it. Conventional air compressors are used in several applications: To supply high-pressure clean air to fill gas cylinders To supply moderate-pressure clean air to a submerged surface supplied diver To supply moderate-pressure clean air for driving some office and school building pneumatic HVAC control system valves To supply a large amount of moderate-pressure air to power pneumatic tools For filling tyres To produce large volumes of moderate-pressure air for large-scale industrial processes (such as oxidation for petroleum coking or cement plant bag house purge systems). Most air compressors either are reciprocating piston type, rotary vane or rotary screw. Centrifugal compressors are common in very large applications. There are two main types of air compressor's pumps: oil lubed and oil-less. The oil-less system has more technical development, but they are more expensive, louder and last for less time than the oiled lube pumps, but the air they deliver is of better quality. II. Solar Air Compressor A solar powered air compressor does exactly the same as a regular compressor, but it's powered by the sun. Air compressors are often used to power drills used by oil and gas companies because there is no power available, solar powered air compressors make powering these drills very easy[4]. It may seem strange to use solar powered drills in order to find fossil fuels, but it really is done! It may only be a tiny thing but it does make a difference. We can only run solar powered air compressors from the solar panels, you cannot run one from a battery at night for example as this could cause damage to the delicate circuit. The solar powered air compressor is completely green and will look after the environment. Solar technology is now small enough to be used to charge your cell phone, run a laptop . You can also buy smaller solar air compressors to run smaller drills and machinery. The solar power air compressor is basically a standard air compressor with the power being generated from the sun. If you buy one of these compressors you should have everything you need. Here we have designed a Solar based Air Compressor by using AT89S52 controller[1]. Solar Based Air Compressor for Inflating Tyres www.iosrjournals.org 30 | Page Specificationsof Solar Panel and Air Compressor S.No Description Specification 1 Product Type 100Watt Photovoltaic Solar Panel 2 Rated Output Voltage 12 Volts 3 Solar Cell Grade (A, B, C) Grade A 4 Cell Type Polycrystalline Silicon 5 Life Time 25 years 6 Output (Watts) 100 Watts 7 Connector Type MC IV (MC4) Cables attached to junction box Solar Panel will produce an average of 300 Watt Hours (Wh) or 25Amp Hours (Ah) of charge per day. Which is 5 hours of Sun Shine. Air Compressor Specifications:- High Power Model of 12V Car Electric Air Compressor Tyre Pump - Tyre Inflator High Power Model 250 PSI has a Extra High Power Motor for Better Inflation power Stronger Outer Body Long air Pipe Simply use this for fast & easy inflation of car tyres" No strength required for pumping air as it is all electronic & is powered directly from your car battery Perfect for anyone who wants a ease while inflating a tyre Time saving as compared to mechanical pump Quick operation Very Compact and easy to store in car dickey Robust and Durable Design Easy to use - just plug into your car cigarette lighter for power, slip universal adapter over tyre valve and you are ready to inflate An invaluable kit for the motorist, no need to be stranded if you have a puncture, simply plug into your car cigarette lighter & place the nozzle over the tyre valve This inflator has a pressure gauge that reads in lb/in and kg/cm bar Compact inflator, plugs into car cigarette lighter for the easy inflation of car or bicycle tyres, sports balls. III. Calculations For Solar Panel Charging:- Assuming that there are no losses in the charging process and that the sun continues to shine then it is simply a question of dividing the energy storage capacity of the battery by the rate of energy production of the solar panel[3]. Storage capacity of battery = 12 X 200 X 3600 Joules = 8.64 MJ Time taken to charge it = 86400000/300 = 28800 seconds or 8 hours 12 minutes IV. Methodology 8052 Microcontroller Memory Organization The microcontroller memory is divided into Program Memory and Data Memory. Program Memory (ROM) is used for permanent saving program being executed, while Data Memory (RAM) is used for temporarily storing and keeping intermediate results and variables. Depending on the model in use (still referring to the whole 8052 microcontroller family) at most a few Kb of ROM and 128 or 256 bytes of RAM can be used. However All 8052 microcontrollers have 16-bit addressing bus and can address 64 kb memory. It is neither a mistake nor a big ambition of engineers who were working on basic core development. It is a matter of very clever memory organization which makes these controllers a real “programmers‟ tidbit“. Solar Based Air Compressor for Inflating Tyres www.iosrjournals.org 31 | Page Fig 1: Solar based air compressor pump Program Memory The oldest models of the 8052 microcontroller family did not have any internal program memory. It was added from outside as a separate chip. These models are recognizable by their label beginning with 803 (for ex. 8031 or 8032) . All later models have a few Kbytes ROM embedded, Even though it is enough for writing most of the programs, there are situations when additional memory is necessary. A typical example of it is the use of so called lookup tables. They are used in cases when something is too complicated or when there is no time for solving equations describing some process. The example of it can be totally exotic (an estimate of self-guided rockets‟ meeting point) or totally common (measuring of temperature using non-linear thermo element or asynchronous motor speed control) . In those cases all needed estimates and approximates are executed in advance and the final results are put in the tables (similar to logarithmic tables). |
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