Refrigeration and Air Conditioning Lecture Note

Description

Name of Notes : – Refrigeration and Air Conditioning Lecture Note

Introduction

Refrigeration is the science of moving heat from low temperature to high temperature. In addition to chilling and freezing applications, refrigeration technology is applied in air conditioning and heat pumps. This chapter describes the fundamentals of refrigeration. The minimum amount of work to drive a refrigerator can be defined in terms of the absolute temperature scale. Matter may have different forms of energy, potential, or kinetic, depending on pressure, position, and movement. Enthalpy is the sum of its internal energy and flow work. If a change of enthalpy can be sensed as a change of temperature, it is called sensible heat. This is expressed as specific heat capacity: the change in enthalpy per degree of temperature change, in kJ/(kg K). If there is no change of temperature but a change of state, it is called latent heat that is expressed as kJ/kg but it varies with the boiling temperature. Heat moves from a hot body to a colder one by conduction, convection, and radiation that is mainly by infrared waves, which are independent of contact or an intermediate fluid.

• History Of Refrigeration
• History Of Refrigeration ? Development Of Refrigerants And Compressors
• Applications Of Refrigeration & Air Conditioning
• Review of fundamental principles ? Thermodynamics : Part I
• Review of fundamental principles ? Thermodynamics : Part II
• Review of fundamentals: Fluid flow
• Review of fundamentals: Heat and Mass transfer
• Methods of producing Low Temperatures
• Air cycle refrigeration systems
• Vapor Compression Refrigeration Systems
• Vapor Compression Refrigeration Systems: Performance Aspects And Cycle Modifications
• Multi-Stage Vapor Compression Refrigeration Systems
• Multi-Evaporator And Cascade Systems
• Vapor Absorption Refrigeration Systems
• Vapor Absorption Refrigeration Systems Based On Water-Lithium Bromide Pair
• Vapor Absorption Refrigeration Systems Based On Ammonia-Water Pair
• Refrigeration System Components: Compressors
• Performance Of Reciprocating Compressors
• Rotary, Positive Displacement Type Compressors
• Centrifugal Compressors
• Condensers & Evaporators
• Expansion Devices
• Analysis Of Complete Vapor Compression Refrigeration Systems
• Refrigerants
• Psychometric
• Psychometric Processes
• Inside And Outside Design Conditions
• Psychometric Of Air Conditioning Systems
• Evaporative, Winter And All Year Air Conditioning Systems
• Cooling And Heating Load Calculations – Estimation Of Solar Radiation
• Cooling And Heating Load Calculations -Solar Radiation Through Fenestration – Ventilation And Infelt
• Cooling And Heating Load Calculations -Heat Transfer Through Buildings – Fabric Heat Gain/Loss
• Cooling And Heating Load Calculations -Estimation Of Required Cooling/Heating Capacity
• Selection Of Air Conditioning Systems
• Transmission Of Air In Air Conditioning Ducts
• Design Of Air Conditioning Ducts
• Space Air Distribution
• Ventilation For Cooling