BITS PILANI, DUBAI CAMPUS

INSTRUCTION DIVISIONFirst Semester 2014 2015Course Handout (Part II)

Date: 02.09.2014In addition to Part I (General Handout for all courses appended to the Time Table) this portion further specific details regarding the course.

Course No.

: ME F461

(3 0 3)Course Title

: Refrigeration & Air-conditioning Instructor-in-charge: Dr.A.M.Surendra kumar Instructors : Dr.A.M.Surendra kumar Scope and Objective of the Course:

The course is designed to give an in-depth study of theory of refrigeration and air-conditioning and their applications. The techniques of analysis and design of refrigeration and air-conditioning systems will also be discussed.Course Pre/Co- requisite (if any) & Catalogue / Bulletin Description: Given in the Bulletin 2014 2015Study Material:Text book [TB]:

Arora C.P. Refrigeration and Air-conditioning, 3rd Ed. Tata McGraw Hill Co, 2009Reference book(s) [RB]:

i. Arora.S.C, & Domkundwar S, A course in Refrigeration and Air conditioning 7th Ed. Dhanpat Rai & Co. Ltd, 2005 ii. Manohar Prasad, Refrigeration and air-conditioning, Wiley Eastern Ltd, 1983.

iii. Roy J. Dossat, Principles of Refrigeration, 4nd Ed., Pearson Education Asia, 2002.

iv. Edward G. Pita, Air Conditioning Principles and Systems, 4nd Ed., Pearson Education Asia, 2003.

Course Plan / Schedule:Lect No.Learning ObjectivesTopics to be coveredReference to TextNo. of Lectures

1Introduction & ReviewIntroduction, the second law interpretation, the Carnot principle21

2Gas cycle refrigerationAir craft refrigeration113

3Vapor compression systemModification in reversed Carnot cycle, Vapour compression cycle, Effect of operating conditions, Actual cycle35

6Multi-pressure systemsMulti stage compression53

7CompressorsPrinciple and performance of reciprocating compressor, rotary and C.F compressors 61

8Condensers Types, Heat transfer in condensers71

9Evaporators Types, Heat transfer in evaporators, augmentation of boiling heat transfer81

10Expansion ValvesTypes of expansion devices, constant pressure and thermostatic expansion valve91

11RefrigerantsDesignation of refrigerants, comparative study, selection of refrigerant44

12Vapor absorption systemVapor absorption system123

14Vapor absorption systemDouble effect H2O-LiBr2 absorption system, Electrolux refrigerator122

15Psychrometry of A/C processesProperties, chart, application of first law, Basic processes in conditioning of air145

17Load Calculations Cooling & HeatingDesign conditions, solar radiations, heat transfer through building structure16,17,182

18Load Calculations Cooling & HeatingHeat gains, cooling and heating load estimate, Psychrometric calculations and selection of air-conditioning apparatus cooling and dehumidification192

19Design of A/C systemsHeat and moisture transfer in air-conditioning equipments204

21Transmission and distribution of airFriction loss and dynamic losses in ducts, Air flow through simple duct system, air duct design215

22Application of Refrigeration & Air Conditioning SystemsFood processing by refrigeration and storage, transportation refrigeration, Cooling and heating of foods, freeze drying and heat drying of foods242

Total Number of classes planed45

Evaluation scheme:

EC NoEvaluation ComponentsDurationWeightage %Date & TimeVenue

1Test-1(Closed Book)50 minutes2501.10.14 W2To be announced later

2Quiz-1(Closed Book)20 minutes0815.10.14 W6

3Test - 2(Open book*)50 minutes2017.11.14 M2

4Quiz 2 / Assignment(Closed Book)20 minutes0703.11.14 M8

5Compre Exam(Closed Book)3 hours4028.12.14 Su(AN)

* Only prescribed text book(s) and hand written notes are permitted

Mid-Sem Grading:

Mid-sem grading will be displayed after two evaluation components. (Refer Academic calendar for schedule).

Note: A student will be likely to get NC, if he / she doesnt appear / appear for the sake of appearing for the evaluation components / scoring zero in pre-compre total.Makeup and Attendance policies: Make-ups are not given as a routine. It is solely dependent upon the genuineness of the circumstances under which a student fails to appear in a scheduled evaluation component. In such circumstances, prior permission should be obtained from the Instructor-in-Charge (I/C).The decision of the I/C in the above matter will be final.

Attendance: Every student is expected to be responsible for regularity of his/her attendance in class rooms and laboratories, to appear in scheduled tests and examinations and fulfill all other tasks assigned to him/her in every course. A student should have a minimum of 50% of attendance in a course to be eligible to appear for the Comprehensive Examination in that course. For the students under the purview of Academic Counseling Board (ACB), the Board shall prescribe the minimum attendance requirement on a case-to-case basis. Attendance in the course will be a deciding factor in judging the seriousness of a student which may be directly / indirectly related to grading. General timings for consultation: Each instructor will specify his / her chamber consultation hours during which the student can contact him / her in his / her chamber for consultation.

General instructions: Students should come prepared for classes and carry the text book(s) or material(s) as prescribed by the Course Faculty to the class.

Notices:

All notices will be displayed on the III rd year Notice Board.

Instructor- In-Charge ME F461Instructors Contact Details: Dr. A.M. Surendra Kumar, Associate Professor, Chamber No.163, Main Block, Ph: 00971 4 4200700, Extn: 251, email: amskumar@dubai.bits-dubai.ac.in Mobile No. 971 50 4746385

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