Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9





Note: pre requisite Applied thermodynamics

PART - A

Unit - 1

methods of Refrigeration: Ice refrigeration, evaporative refrigeration, air refrigeration, vapour refrigeration, dry ice refrigeration, thermo electric refrigeration, pulse tube refrigeration, thermoacoustic refrigeration.

06 Hours

Unit – 2

gas cycle REFRIGERATION:

Introduction , reverse Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9 Carnot cycle, Bell Coleman cycle, advantages & dis-advtanges of gas refrigeration system. Applications to aircraft refrigeration, Analysis of gas refrigeration and Numericals.

06 Hours

Unit – 3

Multi Pressure Vapour Compression systems: Multi stage compression, Multi Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9 evaporator systems, Cascade systems, calculation, production of solid carbon dioxide, System practices for multistage system.

07 Hours

Unit - 4

Refrigerants: Types of Refrigerants, Comparative study of Ethane and Methane derivatives, selection of Refrigerants Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9, Requirements of Refrigerants, Effects of lubricants in Refrigerants, substitutes of CFC Refrigerants, Mixture Refrigerants-azeotropic mixtures

07 Hours

PART - B

 Unit – 5

Equipments used in vapour compression Refrigeration system: Compressors: Principle, types of compressors, capacity control. Condensers: Types Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9 and construction, Expansion devices: Types- Automatic expansion valve, Thermostatic expansion valves, capillary tube. Sizing Evaporator: Types & construction.

06 Hours

Unit - 6

Vapour Absorption System: Common refrigerant absorbent combinations, Binary mixtures, Ammonia Water Absorption system, Actual vapour Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9 absorption cycle and its representation on enthalpy. composition diagram, calculations. Triple fluid vapour absorption refrigeration system. Water - Lithium Bromide absorption chiller.           

                                           07 Hours

Unit - 7

Design conditions: Outside design conditions, choice of inside conditions, comfort Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9 chart. Choice of supply design condition.

06 Hours

Unit - 8

Load calculations and applied psychometrics: Internal heat gains, system heat gains, break up of ventilation load and effective sensible heat factor, Bypass factor Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9, cooling load estimate. Psychometric calculations for cooling. Selection of Air conditioning apparatus for cooling and dehumidification, evaporative cooling.

07 Hours


Unit - 8

Transmission and distribution of Air: Room Air Distribution, Friction loss in ducts, dynamic losses Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9 in ducts, Air flow through simple Duct system, Duct design.

^ Controls in Refrigeration and Air conditioning equipments: High pressure and low pressure cut out, thermostats, pilot operated solenoid valve, motor controls Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9, bypass control-Damper motor. VAV controls.     

       06 Hours

 

Text Books:

  1. ‘Refrigeration and Air-Conditioning’ C. P. Arora, Tata McGraw Hill Publication, 2nd edition, 2001.

  2. ‘Refrigeration and Air-Conditioning’ W. F. Stoecker, Tata McGraw Hill Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9 Publication, 2nd edition, 1982.

 

Reference Books:

  1. ‘Principles of Refrigeration’ Dossat, Pearson-2006.

  2. ‘Heating, Ventilation and Air Conditioning’, McQuistion, Wiley Students edition, 5th edition 2000.

  3. ‘Air conditioning’ PITA, 4th edition, pearson-2005

  4. ‘Refrigeration and Air-Conditioning’ Manohar prasad

  5. ‘Refrigeration and Stresses, Stress tensor, Principal Stresses. Engineering Materials and their mechanical properties, Stress-Strain diagrams, Stress Analysis, Design considerations: Codes and Standards. 05 Hours unit- 2 design for static & impact strength - 9 Air-Conditioning’ S C Arora & S Domkundwar, Dhanpat Rai Publication



DESIGN OF HEAT EXCHANGER

^ Subject Code
:

10ME664
IA Marks
:

25

No. of Lecture Hrs./ Week

:

04

Exam Hours

:

03

Total No. of Lecture Hrs.

:

52

Exam Marks

:

100
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