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日期:2024-03-15 02:01

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.






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