TTX5234 Plant Utilities

General Information

Credit Rating: 1/3 (150 Hours)

Methods of Course Delivery:

• Printed Lesson Materials (4 Units)

• Unit I: Energy (09 Sessions)

• Unit II: Water and Steam (10 Sessions)

• Unit III: Illumination (05 Sessions)

• Unit IV: Air Conditioning (06 Sessions)

• Unit V: Textile Effluent Treatment( 06 Sessions)

• Unit VI: Health & Safety Requirements (06 Sessions)

• 3 Day-schools (not compulsory, Refer the activity Diary for dates)

Students must Study the lesson materials before attending the day school.

DS 1: Unit 1 & II; DS2:Unit II to IV DS3: Unit V & VI

• 3 Assignments (Please see the attached Assignments for details)

• 1 Mini Project

Assessment: Continuous Assessment Marks will be given to

• Assignments

• Continuous Assessment Tests (Refer Activity Diary for Dates)

• Mini Project

For Eligibility Criteria (Refer the Activity Diary)

Final Examination: Those who get 40% or more in continuous assessment will be

allowed to sit for the final examination held at the end of the academic year

Final Marks; Final Mark = 0.5 x Continuous Assessment Mark + 0.5 x Final

examination Mark (However you have to get at least 40% in the final

examination to pass the course)

Instructions:

• Any change of your address must be intimated to the Student Affairs Division and the Course

Coordinator without delay.

• Course Coordinator: Mr. M A I Perera, Tel. ,2822310; ext 653, e mail – maper@ou.ac.lk

• You may be provided with a set of questions for your self testing. If you wish to have them

please submit your e -mail Number

The Open University of Sri Lanka

Department of Textile & Apparel technology

TTX5234 Plant Utilities

Assignment I – 2013/2014

Please submit your assignment to reach the following address on or before the date given in the Activity Diary.10.01.2014

Course Coordinator – TTX5234

Department of Textile and Apparel technology

Open University of Sri Lanka

Nawala, Nugegoda

Please study the units I and II before attempting this assignment.

1. (i) Distinguish between the terms.

a) Renewable Energy and non-renewable energy

b) Primary energy and secondary energy

c) Tandem compound turbines and cross compound turbines

d) Turbine and Generator

e) Horizontal axis wind turbine and vertical axis wind turbine

2. Explain why?

(a) Electrical losses are reduced by operating transmission lines at high voltages?

(b) Coal Power generation is considered as harmful to the environment?

(c) Fractional distillation is the most important process of the oil refining process?

(d) Hydropower has become the leading source of renewable energy.

3. (a) Explain with a suitable sketch how does a solar cell work?

(b) What is an active solar heating system?

4. Discuss the operational principle of any one type of nuclear reactor and discuss the environmental

issues associated with nuclear power generation.

5. Define the following terms.

(a) De-aeration (b) Dryness Fraction (c) Triple Point (d) Super heated steam (e) Enthalpy

6. a) What is a heat exchanger

b) What functions are performed by heat exchangers?

c) Distinguish between counter flow and parallel flow heat exchangers

d) Describe the function of “Shell & Tube Exchanger” with a suitable diagram.

Diploma in Industrial Studies -2013/2014

TTX5234 Plant Utilities

Assignment II

Answers to this assignment must be submitted before the date given in the activity diary;

04.04.2014

Mr. M A I Perera

Course Coordinator

Dept. of Textile and Apparel Technology

OUSL

Nawala, Nugegoda

Late submissions will not be accepted!

Answer all questions

1. Explain the following terms

a) Luminous flux b) Lumen

b) c) Luminous Intensity d) Candela

e) Illumination f) Luminous efficiency

g) Brightness or Luminance

2. Compare the following lamps on factors given in the chart.

Type of

lamp

Comparativ

e

Efficiency

with

incandesce

nt

lamp

Working

Temperatur

e

Commo

n

usage

Operatin

g

Voltage

Principl

e of

Operatio

n

Advantag

es

Disadvanta

ges

Tungsten

Halogen

lamp

Tube

Floresant

lamp

Standard

incandesce

nt

1

Mercury

vapor lamp

Induction

lamp

3. Calculate the Illumination (lux) on the area of your study desk, or the working desk at

your work place. Compare the value that you obtain with the standard values establish

whether there is sufficient illumination.

Show your calculations clearly, giving the type of lamp you are using.

If the illumination is out of the required standards, suggest all the possible alternative

solutions, to obtain the standard illumination, and decide on the best solution.

Give reasons for your decision.

(Obtain the relevant data from lesson materials or other sources. Indicate the sources from

which you got the data / information.)

4. Define the following terms

• Dry bulb temperature

• Wet bulb temperature

• Dew point temperature

• Specific volume • Humidity ratio • Molar water content

• Relative humidity • Enthalpy

Calculate the enthalpy of 1kg of dry air of the temperature 30ºC having a humidity ratio of 0.015

kg of moisture in the kg of dry air

Cp.air = 1.04 KJ/kgºC Cp.vapour = 2.093 KJ/kg

ºC

ro = 2258 KJ/kg

For self Assessment:. Work out the activities 10,11,12 & 13 in Unit IV (Air conditioning) .Do

not submit these answers for correction!!!

Diploma in Industrial Studies -2013/2014

TTX5234 Plant Utilities

Assignment III

Answers to this assignment must be submitted on or before the date given in the activity

diary to; 30.05.2014

Mr. M A I Perera

Course Coordinator

Dept. of Textile and Apparel Technology

OUSL

Nawala, Nugegoda

Late submissions will not be accepted. Therefore you are strictly advised to submit answers

on or before the due date.

Answer all questions

1. What do you understand by the following abbreviations.

TDS DO BOD COD SS

2. Explain aerobic and anaerobic oxidation

3. a) What are the processes used under physical, chemical and biological methods of effluent

treatment

b) What type of impurities are removed in primary, secondary and tertiary stages of waste

water

treatment process. What are the processes used in each of these stages.

4. What are the aspects covered under “Safety Engineering” and “Safety Management”

5. Complete the following “Mind map” on safety engineering.

Give a brief explanation of each concept given in the boxes above.

6. Identify the potential hazards in your work place or in your home applying the principles of

Energy

Analysis.

Energy Analysis

Types of Energy

Safety Engineering of Hazards

Identification

Hazard control methods

Measures of risk

TTX5234 Plant Utilities - Mini Project Themes

Select one of the following themes as your mini project. You are expected to spend about 20

hours in accomplishing this project. (Date of Submission: Please refer the Activity Diary)

26.05.2014

1. Hydrogen Energy (Discuss present state of the development, What problems are

prevailing, What advantages and disadvantages are there)

2. Solar Energy (Include to what extent solar energy is used in Sri Lanka, What problems

are prevailing, Who are the providers of solar energy units in Sri Lanka etc.)

3. Bio Mass Energy (Discuss different types, Present state of the art, Problems,

advantages/disadvantages, Use & prospects of bio mass energy in Sri Lanka)

4. World Oil Crisis (Is there a crisis? Why oil prices go up?, Who are the producers?, Who

control the prices?, How prices have changed in the near past? Etc.)

5. Coal power plants in Sri Lanka (Is it suitable? Why?, What problems are there?, Compare

with Diesel and Hydro power generation, Politics?, Bribery given by Diesel plan owners?

etc.)

6. Safety of Nuclear Power Plants (Is it really clean energy? Threats to the world, Is it

cheap?, etc.)

7. How Energy can be saved? (Discuss the problems prevailing in SL, Where and how

energy can be saved, what is the present status in developed world? Etc.)

8. Describe the operational principle of an air conditioner working on the principle of

refrigerative cooling. (All components and their functions, Thermodynamics of

refrigerative cooling, Calculation of efficiency of the cycle etc.)

9. Solar water heaters (Different systems, availability in SL, Service providers in SL, Their

products, Comparison of these products)

Those who are employed can select any one of the following themes: 10. Study the steam generation unit available in your factory and write a comprehensive

report on it. Apart from other details, your report should include Type of unit, capacity,

steam plant lay-out, any accessories used, water source and treatment details, and cost of

production.

11. Study the lighting system available in your factory or in one of the departments of the

factory and make a comprehensive lay-out plan of the system. Determine whether the

standard levels of illumination are available as per the standards given in the lesson

material. If not suggest what should be done to improve lighting minimizing cost.

12. Study the health and safety systems available in your factory and make a comprehensive

report on it. Your report should contain comments on whether mandatory safety

requirements are in place or not and your comments on how to improve any

shortcomings.

13. Study the air-conditioning system available in your factory or in one of the departments

of the factory and make a comprehensive lay-out plan of it. Estimate the heat loads of the

factory and comment on whether the present plant is capable in achieving optimum

conditions for the different processes and comfort of the working personnel.

14. Study the effluent treatment plant available in your factory and make a comprehensive lay-out plan of it. Explain the various stages of treatment and the effluents that are

removed at each stage. Comment on the quality of water that is discharged to the

environment.