REFRIGERATION AND AIR CONDITIONING (A60334)
UNIT-I
Basic
concepts
Refrigerators
Heat pump
Carnot
refrigerator - Applications of refrigerator
Vapour
compression refrigeration
Ideal cycle
Effect of
sub cooling of liquid
Super
heating of vapour
Deviations
of practical (actual cycle) from ideal cycle
Construction
and use of P-H chart- problems.
UNIT-II
Compressors
-classification - Working - Advantages and Disadvantages.
Condensers -
classification
Working
Principles Evaporators - classification
Working
Principles Expansion devices - Types
UNIT-III
Vapor
Absorption refrigeration
Description
and working of ammonia - water, Li Br –
Water system
Calculation
of HCOP
Principle
and operation of three fluid vapour absorption refrigeration system.
Air
refrigeration
Bell Coleman
cycle - open and dente air system
Ideal and
actual refrigeration - applications
Steam jet
refrigeration system - working principle - basic operation
UNIT-IV
Introduction
to Air Conditioning:
Psychometric
Properties & Processes
Sensible and
latent heat loads - Characterization
Need for
Ventilation
Consideration
of Infiltration
Load
concepts of RSHF, ASHF, ESHF and ADP.
Concept of
human comfort and effective temperature
Comfort Air
conditioning
Industrial
air conditioning and Requirements
Air
conditioning Load Calculations.
UNIT-V
Air
Conditioning systems:
Classification
of equipment, cooling, heating humidification and dehumidification
Filters,
grills and registers
Deodorants
Fans and
blowers.
Heat Pump
Heat sources
Different
heat pump circuits - Applications.