Introduction To Energy Systems (EEP 121) PDF
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Alexandria University
Dr. Hossam Kotb
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Summary
This document provides the course content for an Introduction to Energy Systems course (EEP 121), likely at Alexu University. The content covers topics such as illumination systems, light quantities, and basic definitions. It also includes assessment details for the course.
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INTRODUCTION TO ENERGY SYSTEMS (EEP 121) By Dr. Hossam Kotb Assistant Professor Electrical Engineering Department Faculty of Engineering Course Contents 2 Part (2) Electrical Power Utilization ...
INTRODUCTION TO ENERGY SYSTEMS (EEP 121) By Dr. Hossam Kotb Assistant Professor Electrical Engineering Department Faculty of Engineering Course Contents 2 Part (2) Electrical Power Utilization Part (2) Contents Illumination Systems Illumination Design Storage Batteries UPS Fuel Cells Microsoft Team Code All lectures will be uploaded on the Team For all students, please join the course team using your academic mail (…@alexu.edu.eg) Team Name: Energy Systems EEP 121 (Fall2024) Team Code: doez3xl Assessment Type Marks Midterm 25 Lab 10 Assignments 5 Final 60 Total 100 ILLUMINATION SYSTEMS Light Quantities and Basic Definitions What is a Light ? Light is an electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is the portion of the spectrum that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 380 – 780 nanometers (nm), or 0.38 to 0.78 micrometers (µm), between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths). 0.78 Or candlepower (cp) nadir ∅ Iav or = 4𝜋 𝐴𝑟𝑒𝑎 𝑜𝑓 𝑠𝑝ℎ𝑒𝑟𝑒 4𝜋𝑟 2 𝜔= 2 = 2 = 4𝜋 (𝑖𝑛 𝑎𝑙𝑙 𝑑𝑖𝑟𝑒𝑐𝑡𝑖𝑜𝑛𝑠_ 𝑟 𝑟 or brightness or illumination Ev 𝜽 En 𝜽 Eh
