This section highlights some of the basic principles of air conditioning for those who would benefit from additional knowledge in this area. Identify the various gas laws and their importance to your basic knowledge of physics. Terms in this set 11 list the components of a basic singlelevel compression refrigeration system. Each component of the system uses one or more of these principles in its operation. Dossat principles of refrigeration john wiley 1961 acrobat 7 pdf 35. The compressor is a vapor compression pump which uses pistons or some other method to compress the refrigerant gas and send it on its way to the condenser. Provides students with material that is essential to. The contents of this book are intended to interest those who are not engaged every day with refrigeration plant but who wish to extend their knowledge on the basic principles of appliances they see every day. This effect is commonly used in camping and portable coolers and for cooling electronic components and small instruments.
For this reason, all air conditioners use the same cycle of compression, condensation. The refrigeration machine is a reversible heat engine that run in. Figure 16 a combination meter that measures and displays both the temperature and the humidity is useful to use. The curriculum teaches students both the fundamentals and advanced principles of industrial refrigeration and air conditioning. It covers the basic principles in refrigeration and is not intended to provide specialized knowledge on the subject. An introduction thermoelectric cooling uses the peltier effect to create a heat flux between the junctions of two different types of materials. Basic refrigeration and air conditioning paperback april 23, 20 by p n ananthanarayanan author 4. To be able to provide your customers with cooling solutions, you will need to have a firm grasp of the fundamental principles of basic refrigeration. This is the amount of heat required to turn a liquid into a gas. The danfoss product range for the refrigeration and air. Refrigeration is the process of removing heat from an area or a substance and is usually done by an artificial means of lowering the temperature, such as the use of ice or mechanical refrigeration. The compressor does work on the refrigeration system consumes energy.
Evaporator compressor with drive motor condenser expansion valve throttle. It includes an introduction to osha, the laws of thermodynamics, pressure and temperature relationships, heat transfer, the refrigeration cycle, refrigerant identification and. Table of contents section 1 basic refrigeration principles types of refrigerant 2 5 refrigerants 28 thermodynamics 11 refrigerant 12 28 heat 11. However, the material covered and the method of presentation are such that the text is also suitable for adult evening classes and for onthejob training and selfinstruction.
Th movement cooling by the removal of heat the movement of heat from a place where it is notot a ted to a wanted to a. The principles of basic refrigeration a chiller is simply a device that used to remove heat from something. The compressor must be operated within safe temperature, pressure, and electrical limits. It is usually done by an artificial means of lowering the temperature, such as by the use of ice or mechanical refrigeration, which is a mechanical system or apparatus, designed and. Dx packaged systems provide cooling using the basic refrigeration cycle. May 21, 2007 heat flow is a basic principle of refrigeration in fact, of all hvac work. Distribution systems which represents the pipingd an fitting of the piping systems. Is the process of removing heat from matter which may be solid, a liquid or a gas. Heating and airconditioning principles 5 element that expands and contracts, based on the humidity. Part 1 this section explains in basic terms the principles that are used to create the refrigeration effect. Industrial refrigeration and air conditioning trainer. The close systems are consists of the following components.
For industrial purposes, chillers can be thought of as a component within a complex mechanical system that is used to remove heat from a process or substance. Heat and refrigeration principles learning objective. Gases give off heat when changed from gas to liquid. This procedure is called a throttling process or joulethomson. Pdf part 1 fundamentals of refrigeration refrigeration manual. Air conditioning and refrigeration rex miller professor emeritus state university college at buffalo buffalo, new york mark r. The less heat an object has, the colder we say it is. Ppt refrigeration basics 101 powerpoint presentation. For both students and professionals, this book presents the science behind the operation of refrigeration systems as a method for building solid analytical skills, which will set the studenttechnician apart when it comes to understanding and troubleshooting system. It raises the pressure, temperature and enthalpy of the refrigerant by compressing the saturated gas, in an isentropic process, to a superheated. For example, if a temperature of 100f is indicated in connection with r. Refrigeration is the removal of heat from a material or space, so that its temperature is lower than that of its surroundings. The illustration above is a consumers understanding of refrigeration.
Sep 10, 2016 the refrigeration cycle is a critical component of hvac systems and is governed by the principles of thermodynamics. For example, in the refrigeration cycle, the evaporator cooling coil is colder than the air flowing around it, so heat flows from the warmer air into the evaporator. Source unite which represent the chiller in cooling system or the boiler and furnace in heating systems. For an air conditioning system to operate with economy, the refrigerant must be used repeatedly. Graphics and animations are used in an attempt to make it easy. Refrigeration fundamentals heatcraft worldwide refrigeration. Principles of refrigeration 32 hours, 32 nate cehs, 3. Mechanical refrigeration works by changing the the majority of heat is removed from the the majority of the works by removedchanging the absorbed heat is state of the refrigerant. Heat flow is a basic principle of refrigeration in fact, of all hvac work.
Refrigeration and air conditioning training course. This section explains in basic terms the principles that are used to create the refrigeration effect. Basic refrigeration and air conditioning ananthanarayanan, p n on. However, first lets understand air conditioning theory, the basic principle, types of heat, how heat transfers and i will show you how the basic refrigeration cycle.
Principles of heating, ventilating, and air conditioning is a textbook based on the 2017 ashrae handbookfundamentals. Refrigeration an introduction to the basics danfoss. For example, in the refrigeration cycle, the evaporator cooling coil is. There are 4 main components in a mechanical refrigeration system. Welcome to the manual for refrigeration servicing technicians. Identify the basic components of a refrigeration cycle. Refrigeration basics 101 1 refrigeration basics 101 by eric nelson 2 basics. The refrigeration cycle is a critical component of hvac systems and is governed by the principles of thermodynamics. Before we dive in, lets get an understanding of four key concepts. Air conditioning theory there are two laws that are significant to understand the basic refrigeration cycle and air conditioning. Is the process of removing the undesirable heat from a given body to maintain it at a desired lower temperature.
However, they may expect you to have a much greater indepth. Four principles of refrigeration as you may recall from module one tdp400, principles of mechanical refrigeration, level 1. The major components of a dx system are the compressor, the condenser, the evaporator, and the. An overview of the fundamental principles of physics and thermodynamicsincludes an introduction to psychometrics. Principles of refrigeration provides comprehensive coverage of refrigeration theory, components, and systems analysis and design. Refrigeration and air conditioning training course principles. Manual for refrigeration servicing introduction technicians.
This is often measured at the liquids boiling point. Refrigeration basic principle named after two scientists, james prescott joule and william thompson. The science behind refrigeration berg chilling systems inc. Since refrigeration deals entirely with the removal or transfer of heat, some knowledge of the nature and effects of heat is necessary for a clear understanding of the subject. Your customers may not need to go beyond this simple understanding of refrigeration.
This book has been written especially for use in programs where a full curriculum in refrigeration is offered. Refrigeration basic principle refrigeration evaporators. Explain the basics of heat theory and the basic principles of refrigeration. The training program includes hardware and curriculum to study actual. It is an ebook for people who are involved in training and.
Provides students with material that is essential to an understanding of mechanical refrigeration. Hart 1407 refrigeration principles hart 1407 is the students introduction to the refrigeration cycle of air conditioning and refrigeration systems. This course includes basic thermodynamics, heat transfer, temperaturepressure relationship, safe handling of refrigerants, refrigeration containment, and refrigeration components. However, first lets understand air conditioning theory, the basic principle, types of heat, how heat transfers and i will show you how the basic refrigeration cycle diagram works. When refrigerant absorbs the unwanted heat, this raises the refrigerants temperature saturation. It is intended to cover only the fundamentals of refrigeration theory and practice. As refrigerant in the latent state or as vapor refrigerant in the process of changed state to liquid, this is the phase where it absorbs or rejects large quantities of heat.
Load unite which represents the terminal unite as cooling or heating coils or radiators 2. Removing heat from the matter cools or lower its temperature. Miller professor, industrial technology the university of texas at tyler tyler, texas mcgrawhill new york chicago san francisco lisbon london madrid mexico city milan new delhi san juan seoul singapore sydney toronto. Graphics and animations are used in an attempt to make it easy to understand the concepts involved. Typically, the condenser for a dx system must be installed outdoors reject heat so that it may. Compressor basic refrigeration cycle evaporator condenser receiver expansion device. The aim of the book is to provide first degree engineering students with the foundations on refrigeration engineering. You can describe something as cold and everyone will know what you mean. Temperature is an indication of the level of heat energy but not of total amount of heat or amount of material that might be present. Diagram 1 basic refrigeration cycle all of the dx system components can be contained in one unit or separated into two units.
In this component, the refrigerant starts as a cold, twophase substance part liquid, part. Ppt refrigeration basics 101 powerpoint presentation free. Liquids absorb heat when changed from liquid to gas. Fundamentals of refrigeration thermodynamics by daniel micallef. Basic refrigeration fundamentals covers basic concepts and theories of refrigeration as well as safe working procedures. See all 2 formats and editions hide other formats and editions. Basic principles most of us have some ideas concerning the purpose of refrigeration and what refrigeration does. Principles of heating, ventilation, and air conditioning, 8th.
First of all, did you know that there is no such thing as cold. The process where a gas or liquid change its temperature when it is forced through an expansion valve or capillary tube in an insulated system where no ambient heat transfer. Is the science and practice of controlling the indoor climate in term of temperature, air motion, humidity, air purity and noise. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Principles of heating, ventilation, and air conditioning.