EE3009 Assignment
Deadline of submission: 23:59 on 17 March 2023 (Sunday)
Submission location: “Assignment” under “Assessment” of the Blackboard page of this subject
Submission format: One WORD file, in doc or docx format
Submission requirement: 600-800 words in total to cover all the parts in this assignment.
The similarity index from the related plagiarism checking on your final submission must not be more than 30%. I allow resubmission before the deadline, and let you check the similarity index after each of your submissions.
Content of the assignment: In this subject, due to limitation of time, we have no time for going into the details of different types of lamp bubs/tubes, and different energy saving technologies in lifts and escalators/moving walkway. This assignment is on these two areas, such that you can learn something in these area by yourself – via internet search or book study.
a) Lamp bulbs/tubes
I) Find out the meaning of CCT (corelated Color Temperature) and CRI (Color Rendering Index) of a lamp bulb/tube, and why they are important in lighting design. What are the recommended values of CCT & CRI in different types of rooms.
II) Compare different types of lamp blubs/tubes in the area of efficacy, CCT, CRI, life, output degradation rate, starting time, any special gear is required in control/starting the lamp, area of applications, constrains on applications, advantages, and disadvantages, operation principles, etc.
Types of lamps may include:
. Incandescent Lamps
. Tungsten Halogen Lamps
. Fluorescent Tubes
. Compact Fluorescent Lamps
. Mercury Vapour Lamps
. Metal Halide Lamps
. High Pressure Sodium Vapour Lamps
. Low Pressure Sodium Vapour Lamps
. LED Lamps
b) Nowadays , energy saving is a big topic in engineering. Give a summary on various energy saving technologies in lifts and escalators/moving walkway, discuss the working principle or why it can save energy.