professional factory provide Mono-Crystalline 250W Solar Panel Factory for Nicaragua
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Mono-Crystalline 250W Solar Panel
Technical parameter
Maximum Power(W) 250W
Optimum Power Voltage(Vmp) 30.3V
Optimum Operating Current(Imp) 8.29A
Open Circuit Voltage(Voc) 36.76V
Short Circuit Current(Isc) 8.91A
Mechanical Characteristics
Cell Type Monocrystalline 156x156mm (6 inch)
No of Cell 60 (6x10pcs)
Dimensions 1640x990x40mm
Weight 18.0KGS
Front Glass 3.2mm,High Transmission, Low Iron,Tempered Glass
Junction box IP65 Rated
Output Cable TUV 1×4.0mm2/UL12AWG,Length:900mm
Temperature and Coefficients
Operating Temperature(°C): -40°C ~ + 85°C
Maximum System Voltage: 600V(UL)/1000V(IEC) DC
Maximum Rated Current Series: 15A
Temperature Coefficients of Pmax: -0.47%
Temperature Coefficients of Voc: -0.389%
Temperature Coefficients of Isc: 0.057%
Nominal Operationg Cell Temperature (NOCT): 47+/-2°C
Materials of solar panel
1).Solar Cell——Mono-crystalline solar cell 156*156mm
2).Front Glass——-3.2mm, high transmission, low iron, tempered glass
3).EVA——-excellent anti-aging EVA
4).TPT——-TPT hot seal made of flame resistance
5).Frame——anodized aluminum profile
6).Junction Box——-IP65 rated, high quality, with diode protection
Superiority: high quality anodized aluminum frame, high efficiency long life, easy installation, strong wind resistance, strong hail resistance.
Features
1. High cell efficiency with quality silicon materials for long term output stability
2. Strictly quality control ensure the stability and reliability, totally 23 QC procedures
3. High transmittance low iron tempered glass with enhanced stiffness and impact resistance
4. Both Polycrystalline and Mono-crystalline
5. Excellent performance in harsh weather
6. Outstanding electrical performance under high temperature and low irradiance
Quality assurance testing
Thermal cycling test
Thermal shock test
Thermal/Freezing and high humidity cycling test
Electrical isolation test
Hail impact test
Mechanical, wind and twist loading test
Salt mist test
Light and water-exposure test
Moist carbon dioxide/sulphur dioxide
here is the link to the origernal http://youtu.be/ww_a9JS9IJ8
all credit to him
For more information: http://www.samarpanfoundation.org
CONSTRUCTION WITH BOTTLES
Do you remember the last time you bought a drink in a plastic bottle? Chances are that you threw away the bottle, without a second thought, when you were done. That’s what most of us do. Plastic is one of the most disposable materials in the modern world. It makes up much of the street side litter in urban and rural areas. It is rapidly filling up landfills as well as choking water bodies. Plastic bottles make up approximately 11% of the content of landfills, causing serious environmental consequences.
Samarpan Foundation has chosen to transform and repurpose this overlooked and environmentally harmful plastic bottle into one that is a useful resource. They have constructed a functional living space in New Delhi, using hundreds of used PET bottles instead of conventional bricks. Discarded PET (Polyethelene Terephthalate) bottles were collected, manually sorted by size, compactly filled with mud and sealed. Then these bottle bricks were cemented together to construct the floor, walls and roof of the dwelling.
A mud filled bottle is as strong as a brick and has many other advantages. It forms a valuable alternate building material. Low cost and maintenance, along with its long life, make it excellent value for money. PET provides very good alcohol and oil barrier properties and generally good chemical resistance. The orienting process of PET serves to improve its gas and moisture barrier properties also. PET bottles are non biodegradable. Therefore any structure made with it can last a couple of hundred years or more. And then at the end of its life, the structure may be recycled and reused once more!
Plastic has high tensile strength to weight ratio which makes it strong, durable and versatile. Samarpan Foundation has used this concept to reinforce walls of dams and wells in Goa.
Bottle walls act as heat insulators. The Indian armed forces at Siachen use mud filled jerry cans in large numbers to construct living units. The jerry can walls are covered with parachute fabric to provide effective insulation and warmth against the ruthless and freezing Karakorum winds.
Mud filled PET bottles are non brittle and can therefore withstand heavy shock loads without fatigue or failure. In earthquake prone and flood affected areas plastic bricks structures with its high impact resistance can prevent large scale damage to properties and washing away of homes.
Replacing conventional bricks with plastic bottles will help the environment in many ways. Waste creation will be greatly reduced as bottles become a resource and attract value.
Improved sustainable management of plastic bottle waste will greatly reduce pollution of land and water bodies. It will help reduce carbon emissions during baking of bricks and also considerably lower the demand for conventional construction materials. As the volunteers of Samarpan Foundation discovered, these innovative bricks are easy to use and build. In rural areas this can lead to the creation of new jobs especially for women and youth.
Recycling plastic bottles is a great idea. So next time you buy that drink in a plastic bottle, think twice before chucking the empty bottle. Your small contribution can definitely add up to make a big difference.
Video by www.samarpanfoundation.org — May 2011
