عرض مشاركة واحدة
  #6  
قديم 04-03-2010, 12:18 AM
الصورة الرمزية احمد كامل
احمد كامل احمد كامل غير متواجد حالياً
مراقب عام
 
تاريخ التسجيل: May 2009
الدولة: مصر
المشاركات: 1,411
معدل تقييم المستوى: 22
احمد كامل is a name known to allاحمد كامل is a name known to allاحمد كامل is a name known to allاحمد كامل is a name known to allاحمد كامل is a name known to allاحمد كامل is a name known to all
افتراضي

PRACTICAL APPLICATI**S OF PHOTOVOLTAICS ?



V. Ryan © 2005

In the example shown below photovoltaic panels are used to produce electricity which powers a water pump, pumping drinking water from a well. This is especially useful in agriculture and in the third world where wells can be extremely deep. The power produced by the photovoltaic panels is also used to power a purificati** system, cleaning the water, removing dangerous impurities and harmful bacteria.
When not being used to pump water, the electricity can be stored in batteries so that the pump can be used at night.



The ph**e box seen opposite is powered directly by photovoltaic cells during the day. The batteries are also charged during sun light hours.

This type of communicati** system is ideal for remote areas where electricity from the power grid is not available. They have been tested in third world countries and have proved successful. However, the priority for most third world countries is to ensure that people in remote areas have clean drinking water rather than Hi-Tech communicati** systems.
In industrial / developed countries photovoltaic cells are used to power automatic weather stati**s. Next time you drive down a motorway / highway watch out for photovoltaic systems as they are sometimes used to power electr**ic systems measuring traffic c**gesti** and traffic flow.


The photovoltaic panel is being placed ** the roof of a single story house in a village in Africa. The panel will provide enough electrical power for a ph**e. This is the **ly ph**e for a radius of 100 miles. It is an essential tool of communicati** for the whole village as well as the surrounding area.
QUESTI**:
1. With the aid of diagrams and notes, describe a new way in which photovoltaic cells could be used to provide power for a useful device.


__________________

أسألكم صالح الدعاء بالله عليكم وخاصة بشفاء مرضانا ومرضي المسلمين أجمعين

صفحة المنتدى علي الفيس بوك




رد مع اقتباس