Friday, August 3, 2012

Solar Panels and types article in Urdu

Solar Panels and types article in Urdu سولر پینلز اور ان کی اقسامSolar


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 Solar Panels and types article in Urud سولر پینلز اور ان کی اقسامSolar   
article in Urud سولر پینلز اور ان کی اقسامSolar 
 

تحریر: ایم بلال ایم

سولر پینل صرف بجلی بنانے والے نہیں ہوتے بلکہ ان کی مدد سے دھوپ سے مختلف چیزیں، جیسے پانی وغیرہ بھی گرم کیا جاتا ہے۔ اس تحریر میں ہم صرف ان سولر پینل کی اقسام دیکھتے ہیں جن سے بجلی بنائی جاتی ہے اور یہ کہ ان اقسام میں سے پاکستان کیلئے کونسی بہتر ہے۔
بجلی بنانے والے سولر پینل کو پی وی یعنی فوٹو وولٹیک پینل کہا جاتا ہے۔ سولر پینل دراصل سولر سیل کا مجموعہ ہوتا ہے، جس میں متعدد سولر سیل جوڑ کر ایک پینل تیار کیا جاتا ہے۔ سولر سیل کی عمومی عمر ۲۰ سے ۲۵ سال تک ہوتی ہے، لیکن یہ نہیں کہ اس عرصے کے بعد سولر سیل کام کرنا چھوڑ دیتا ہے، بلکہ اس کی کارکردگی کسی حد تک کم ہو جاتی۔ سولر سیل کی بنیادی طور پر تین اقسام ہیں، مونو کرسٹلائن سیل، پولی کرسٹلائن سیل اور تھِن فلم/ایمارفیس سیل۔
مونو کرسٹلائن، جیسا کہ نام سے ظاہر ہے، اس کا ایک سیل سیلیکون کے ایک کرسٹل سے تیار ہوتا ہے۔ یہ سیل عموماً کالے رنگ کا ہوتا ہے اور تھوڑی روشنی میں بھی کام کرتا ہے۔ مونو کرسٹلائن سیل پر پڑنے والی روشنی میں سے ۱۸ فیصد جذب کر کے اس سے بجلی بنا دیتا ہے۔ یہی وجہ ہے کہ سولر سیل میں یہ سب سے مہنگا ہوتا ہے اور سب سے حساس بھی سجھا جاتا ہے۔

Read More Solar Panels and types in Urdu

 

 

Sunday, May 20, 2012

pakistan Science Club Student's buildig a solar cooker

parabolic solar cooker construction photos





aluminium foil in squire shape






aluminium foil 
aluminium foil cutting


aluminium foil cutting in rounded shape 


student cutting aluminium foil in rounded shape


Add caption


one side  of foil










aluminium foil  cutting in conical shape


aluminium foil  placing on dish


school students working with project, aluminium foil  placing on dish


school students working with project


school girls working on project


parabolic solar cooker construction


aluminium foil on  parabolic solar cooker


  parabolic solar cooker


  students placing new foil on parabolic dish


students placing new foil on parabolic dish


students cutting  aluminium foil  in round shaped


students pasting aluminium foil


students pasting aluminium foil 


students pasting glue on aluminium foil  


aluminium foil


setting the direction to sun 


concentrated sun light


adding water in pot


now cooker in actin


water starts boiling

Wednesday, April 11, 2012

500 Watt 12 VDC to 220 VAC Power Inverter


500 Watt 12 VDC to 220 VAC Power Inverter (UPS) uninterruptible power supply

Build you own 500 watt power inverter UPS 

Introduction:

Power inverter is a device which converts 12 volts to 150 volts of D.C into 220 volt to 110 volt. Power inverter is commonly known as UPS. UPS stands for uninterruptible power supply which is the modified form of inverter. Due to the lack of electricity the importance of inverter increases day by day. The substitute of load shedding is generator or UPS.
Few advantages and disadvantages of generator are as follows.
Its first advantage is, it can run many electronic devices and it can supply electricity for the long duration of load shedding. The disadvantages are noise pollution, usage of fossil fuel cost it too high. The alternate of generator is UPS, it has also some advantages and disadvantages.
The supply of electricity goes uninterrupted, it do not require much effort. Its backup depends on battery, as many amperes of the battery it has, that much it backup it would provide.
Its disadvantages are, recharging takes a lot of time and in the long duration of load shedding battery cannot b recharged so that it stops working. By putting excessive load the duration of backup reduces. Its performance is about 60% to 90%. Read Full article 500 Watt 12 VDC to 220 VAC Power Inverter (UPS) uninterruptible power supply

Friday, March 30, 2012

how to make inverter at home

How to make power Inverter in Urdu

Read More
500 Watt 12DC to 220 VAC Power Inverter (UPS)Construction in Urdu 

500 Watt 12DC to 220 VAC Power Inverter
500 Watt 12DC to 220 VAC Power Inverter (UPS)Construction in Urdu

500 Watt 12DC to 220 VAC Power Inverter (UPS)Construction in Urdu Power Inverter (UPS)Construction in Urdu this is a simple inverter you can make your own if you have Little Bit of Knowledge about electronics this inverter can run 1 watt to 500 watt appliances
Discussions about Pakistan Science Club's Power Inverters 12 VDC to 220 VAC UPS, you can find problems, troubleshooting and construction help Please visit Power Inverters (UPS)12 VDC to 220" http://paksc.org/pk/forum.html See also Easy Homemade 50 watt Power Inverters (12 VDC to 220 VAC) UPS Power Inverter (UPS) Circuit inverter diagram Schematic of an Inverter Read More

See also

Easy Homemade 50 watt Power Inverters (12 VDC to 220 VAC) UPS
Power Inverter (UPS) Circuit inverter diagram
Schematic of an Inverter Circuit
WHAT IS THE Difference between an inverter and UPS? (Forum)
How to find emitter base and collector of D1047 Transistor
12 VDC Inverter System Troubleshooting & Maintenance
Difference between Voltage-Amps (VA) and watts and how do I properly size my UPS!

Sunday, March 25, 2012

Science must guide

Science must guide us towards a more sustainable future

Sunday, March 25, 2012 4:54 AMScience must guide us towards a more sustainable future by   David Dickson LONDON: One of the most significant achievements of science over the past few decades has been to provide convincing evidence that human activity has had a growing and potentially unsustainable impact on virtually every aspect of our planet. The scientific community now needs [...]

Renewable energy resourcesSunday, 
March 25, 2012 1:56 AMRenewable energy resources by ERUM ZEHRA Summer is on its way and we’ve been already warned about the electricity load shedding this year and the increase in price per unit because the snow hasn’t melted yet and the water is at dead level in our dams. If timely planning is not done, one can imagine [...]

Tuesday, March 13, 2012

Solar energy Pakistan

Solar energy Pakistan
Solar energy from the sun, has  Solar energy technologies include solar heating, solar photovoltaics, solar thermal electricity and solar architecture, which can make considerable contributions to solving some of the most energy problems of the Pakistan

Solar energy have many applications



  1.  Architecture and urban planning
  2. Agriculture and horticulture
  3. Solar lighting
  4. Solar thermal
  5. Water heating
  6. Heating, cooling and ventilation
  7. Water treatment
  8. Cooking
  9. Process heat
  10. Solar power
  11. Concentrated solar power
  12. Photovoltaics
  13. Solar chemical
  14. Solar vehicles