الاثنين، 25 يونيو 2012

using energy In Homes

In Homes Basics

Pie chart - How Energy is Used in Homes-space heating - 41%;lighting and appliances- 26%; water heating- 20%;air conditioning-8%;refrigeration-5%.
Click to enlarge »
Click to enlarge »
Total Residential Energy Consumption by Region 1978-2005, showing the South and West growing from 1978 and the Midwest and Northeast declining from 1978
Click to enlarge »
Click to enlarge »
The ability to heat and cool is one important accomplishment of modern technology. Our ovens, freezers, and homes can be kept at any temperature we choose, a luxury that wasn't possible 100 years ago. But keeping our homes comfortable uses a lot of energy.
Lighting is also essential to a modern society. Lights have revolutionized the way we live, work, and play. Most homes still use the traditional incandescent bulbs invented by Thomas Edison. These bulbs convert only about 10% of the electricity they use into light; the other 90% is converted into heat. In 1879, the average bulb produced only 14 lumens (a measure of the quantity of light) per watt, compared to about 17 lumens per watt from modern incandescent bulbs. By adding halogen gases, the efficiency can be increased to 20 lumens per watt.


يلا افهمو يا عباقرة الانجليش ^^_^^

LoOLoO&الاء

هناك 3 تعليقات:

  1. هههههههههههه
    من الرسم البياني كأنو الهرجة عن الكهرباء
    شوفي وكلمة lumens خلاص الهرجة عن الكهرباء
    هههههههههههه
    يعطيكي العافية يا قمر

    ردحذف
  2. الاء ابورزيزة26 يونيو 2012 في 5:34 م

    الله يعافييكي

    نورتي الموضووع

    ردحذف
  3. بارك الله فيك ياعسل.
    مع شكري/ليلى علي فرج ^_^

    ردحذف