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HND in BSE HND in Cons HND in Civil
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B5U43 Electricity & Lighting for Building Services Engineering
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Alex Chau / Dr. Kwan
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1st lesson Date: 2017.03 自修
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Qualification Assessor
name
Alex Chau / Dr. Kwan
Unit number B5U43 Learner name
Assignment title Electricity and Lighting for Building Services Engineering
Marking *FOR REFERENCE ONLY
Task Subtask
1
1.1 1.2 1.3 1.4 1.5
Comment:
2
2.1 2.2 2.3 2.4 2.5
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3
3.1 3.2 3.3 3.4 3.5
Comment:
4
4.1 4.2 4.3 4.4 4.5
Comment:
5
5.1 5.2 5.3 5.4 5.5
Comment:
6
6.1 6.2 6.3 6.4 6.5
Comment:
7
7.1 7.2 7.3 7.4 7.5
Comment:
*Please below if achieved.
M1 M2 M3 D1 D2 D3
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Award Assessor Alex Chau / Dr. Kwan
Unit(s) B5U43 Electricity & Lighting for Building Services Engineering
Assignment title: Electricity & Lighting for Building Services Engineering
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Learner name Assessor name
Alex Chau / Dr. Kwan
Date issued Completion date Submitted on
Qualification Unit number and title
HND in Construction and the Built
Environment (Building Services Engineering)
B5U43 Electricity and Lighting for Building Services
Engineering
Assignment title Electricity and Lighting for Building Services Engineering
In this assessment you will have opportunities to provide evidence against the following criteria.
Indicate the page numbers where the evidence can be found.
Criteria
reference
To achieve the criteria the evidence must show that
the student is able to: Task no. Evidence
P1.1 Justify the selection of lamps and luminaries 1.1
P1.2 Evaluate lighting installation designs in terms of efficacy and
energy compliance 1.2
P1.3 Design supply circuits, lighting layouts and control systems 1.3
P1.4 Design simple lighting installations 1.4
P2.1 Evaluate the different types of load and alternative power supplies 2.1
P2.2 Analyse the applications, characteristics and features of UPS
systems 2.2
P2.3 Justify electrical distribution systems used in nonresidential
buildings 2.3
P2.4 Specify methods of electrical distribution and types and sizes of
cables 2.4
P3.1
Review legislation and standards relevant to electrical
installations 3.1P3.2 Justify safety principles, procedures and equipment used in
electrical installations 3.2
P3.3 Produce specifications for overcurrent protection devices 3.3
P3.4 Perform calculations for assessing electrical load and
cable sizes using electrical tables 3.4
P4.1 Review legislation and standards relevant to electrical
fire protection 4.1
P4.2 Evaluate standard methods of fire stopping 4.2
P4.3 Determine cables suitable for installation purposes 4.3
P4.4 Design fire protection systems for industrial and/or
commercial buildings 4.4
P5.1 Compare the operating characteristics of AC and DC motors 5.1
P5.2 Justify the use of DC and AC motors in specific building services
installations 5.2
P5.3 Interpret schematic wiring diagrams for building services
installation control panels 5.3
P5.4 Produce designs and installation requirements for building
services installation control panels 5.4
M1 Identify and apply strategies to find appropriate solutions 1.2
M2 Select/design and apply appropriate methods/techniques
2.3;
3.1;
4.2;
5.2
M3 Present and communicate appropriate findings 1.3;
5.1
D1 Use critical reflection to evaluate own work and justify valid
conclusions 4.2
D2 Take responsibility for managing and organizing activities 3.1D3 Demonstrate convergent/lateral/creative thinking 3.2
Learner declaration
I certify that the work submitted for this assignment is my own and research sources are fully acknowledged and
agreed that once successfully submitted to Hong Kong College of Engineering, it is deemed the property of
Hong Kong College of Engineering.
Learner signature: Date:Assignment brief
Qualification
HND in Construction and the Built Environment (Building Services
Engineering)
Unit number and title
B5U43 Electricity and Lighting for Building Services Engineering
Start date
Deadline
Assessor name
Alex Chau / Dr. Kwan
Assignment title Electricity and Lighting for Building Services Engineering
The purpose of this assignment is to:
1 Be able to design simple lighting installations
2 Be able to specify the cables and methods used in the distribution of electricity
3 Be able to apply legislation and standards to the design of electrical installations
4 Be able to apply legislation and standards to the design of fire protection systems
5 Be able to specify motors and control installations for use in mechanical services plant
Task 1
Scenario
The correct design of lighting is essential in order to make our work, life and social environments comfortable to
use. The design of lighting is often complex and affected by a number of factors. As you are a lighting engineer,
you are assigned a lighting design for the following tasks.
Task 1.1 (P1.1)
A point source luminaire has an output as shown by the polar curve in the diagram. It is mounted 2 meters above
the working plane and is fitted with a 26W compact fluorescent lamp whose output is 1800 lumens. Evaluate the
justification of the selection of lamps and luminaries under the 2 cases as follows.
i) The illuminance on the working plane directly under the lamp
Refer to handout “To design simple lighting installations” on an example 8
ii) The illuminance on the working plane 2 metres to one side.
Refer to handout “To design simple lighting installations” on an example 8
Task 1.2 (P1.2, M1)Evaluate the Utilisation Factor as the lighting installation design in terms of efficacy and energy compliance in a
room with the following dimensions: Length 8m; Width 6m; Height 3m; height or working plane 0.8m. The
room reflectance is ceiling 0.5; Walls 0.5 and Floor 0.2 and design supply circuits, simple lighting layouts, and
control systems in order to interface the building management system (BMS).
Refer to handout “To design simple lighting installations” on an example 10
(For M1, it is recommended identifying and applying strategies to find appropriate solutions for energy saving.)
Task 1.3 (P1.3, M3)
A commercial building is 50mlong, 300m wide and 8m high. Point source luminaires are suspended 2m below
ceiling level. The working plane is 1m high. The SHR 1.5:1 is recommended the lighting supply circuit, layout
and control systems for lighting installation.
Refer to handout “To design simple lighting installations” on an example 11
(For M3, Provide a detailed evaluation of learning and illustrate case study to support your points on simple
lighting installation)
Task 1.4 (P1.4)
Referring to task 1.3, please design the lighting installation.
Refer to task 1.2: is similar with the design supply circuits
Task 2
Scenario: As a Building Services Engineer, you are assigned to design the BS in the flat and evaluate cable loss
for the following task.
Task 2.1 (P2.1)
The sizing of cables is important to prevent overheating and the potential for a fire in a multi storey building. For
the task 1.3 and 2.2 specify the following
The method of distribution around the buildings
Refer to handout “Electrical installations – Selection of wiring system” on page 8.
The cable sizes for the load demands indicated
Refer to handout “Electrical installations – Selection of wiring system” on page 17 – 21.
Task 2.2 (P2.2)
The distribution board for a office building has the following loads connected to it:
1) Lighting: bedroom 2 x 180W tungsten
Dining room 1x300W tungsten
Living room 1x300W tungsten
Kitchen 1x40W fluorescent
Toilet 1x100W tungsten
2) Socket outlets: 1xring circuit for 13A sockets
3) Water heater: 1x3kW storage water heater
4) Air-conditioner: 1 unit for dining/living room (18A)
: 2 units or bedroom (7A each)Evaluate the total current demand of the different types of load and design the electrical distribution systems.
What design changes would be required for the use of alternative power supplies
Refer to the example in the handout “Load assessment”.
Task 2.3 (P2.3 M2)
Uninterrupted power supplies are essential for the modern communications that operate in today’s office
environments. Please describe (1) the features, (2) the analysis of the application and (3) characteristics of UPS
systems in connection with Building Management System in the Data Centre.
(1) Refer to handout “UPS definition” on page 1
(2) Refer to handout “UPS definition” on page 2 and 3
(3) Refer to handout “UPS definition” on page 4,5,6 and 7
(For M2, please design and apply appropriate methods to become the enhancement of power reliability)
Hint: Gen-set installation, dual sources and changeover interconnection and etc.
Description and drawings
Task 2.4 (P2.4)
A three-phase circuit protected at the origin by a single core general purpose PVC-insulated non-armoured
copper cables which are installed in conduit in method 3. The ambient temperature for the cables is 40oC and the
total circuit length is 20m. The circuit is protected at the origin by a 30A MCB. What is the minimum size of the
cable required and specify the method of cable installation if voltage drop for the feeder circuits upstream of this
final circuit is 1%. (Hints: you should use the appendix A). You can make an assumption if necessary.
Refer to handout “Electrical installations – Selection of wiring system” on page 27.
Task 3
Scenario: You are assigned to design the protection device for power system in commercial building. This is
important as electrical lightning strikes in Hong Kong are associated with tropical storms. This can cause
damage to wiring and data cabling that shuts down an electrical system in a building.
As a Engineer, you should realize electrical ordinance to make criteria to design the office of the commercial
building.
Task 3.1 (P3.1, M2, D2)
20sets luminaire are consisted of 2 36W fluorescent tubes
3sets of 32A ring final circuit using 13A socket outlet serving the office area
4sets of 16A split-type air-conditioner
4sets of 20kW 3 phase heatersFor electrical installation, (1) evaluate the application of relevant legislation and standard for this electrical
design and (2) discuss the methods of protection against electrical shock in IEE wiring regulations and safety
issues. Give your assumption and state your design concerns
Hint:
(1) Refer to COP of EMSD, the requirement of REW at different electrical capacity such as A, B, C or H.
WR1A or WR1 form documentation and Ib