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Subject Details

Dept : FTECH

Sem : 5

Regul : 2019

Faculty : Ms.Reya Tabitha Saji

phone : NIL

E-mail : reya.ts.ft@snsct.org

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Lecture Notes

UNIT 1:

Introduction to refrigeration

Refrigerants - classification

unit of refrigeration capacity

Review of Second law of thermodynamics

Interpretation of the laws

Production of low temperatures - principles and process

Ozone depletion potential

Reversed Carnot cycle

Limitations of reversed Carnot systems

UNIT 2:

Simple vapour compression

Vapour absorption cycle

p-h and T-s diagrams

Coefficient of performance

Energy ratios and Power consumption of a refrigerating machine

Standard rating cycle and effect of operating conditions

Air refrigeration system

Reversed Brayton cycle.

UNIT 3:

Introduction to Evaporator

Dry and flooded type

Condenser - Introduction

Evaporative condenser

Thermostatic expansion valve

Reciprocating type compressors

UNIT 4:

Pre-cooling systems

Cold storage- construction

Insulation and operation

Design of cold storage unit

Frozen storage

Prefabricated systems

Walk-in-coolers

Linde and Claude system for liquefaction of air

UNIT 5:

Introduction to cold chain management

Components of cold chain

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