How does air conditioning work everything you need to know. Air conditioning systems basic air conditioning system zoned ac system. Basic knowledge fundamentals of air conditioning air conditioning technology 6 introduction gunt the purpose of air conditioning is to create a room climate comfortable for people. Introduction and basic concepts of refrigeration and air. There are two basic types of automotive air conditioning systems. Water sprays can be used to recondition the air by washing and cleaning it. Basics of air conditioning most people dont realize how their central air conditioner actually works.
The objective of hvac are to control the temperature of air inside the designated air conditioned space along with control of moisture, filtration of air and containment of air borne particles, supply of outside fresh air for control of oxygen and carbon dioxide levels in the air conditioned space, and finally control of the movement of air or draught. In time the coffee will reach the temperature of the surrounding air. Understanding basic electrical wiring and components of. The first component of your air conditioning system is temperature control. Fundamentals of hvac controls the application of heating, ventilating, and air conditioning hvac controls starts with an understanding of the building and the use of the spaces to be conditioned and controlled.
The instructor package includes powerpoint presentation, narrated selfstudy with animations, and testing. All four components compressor, condenser, expansion valve and evaporator are steady flow devices. Basic concepts of air conditioning prepared exclusively for coach leatherware. Air conditioners use refrigeration to chill indoor air, taking advantage of a remarkable physical law. A motor that is drawing too much current will overheat and burn out. These books are used by students of top universities, institutes and colleges. Manual for refrigeration servicing introduction technicians. Most new homes are built with central air conditioning.
It is a unit, which consists of cooling and dehumidifying processes for summer air conditioning or heating and humidification processes for winter air conditioning. Hvac equipment commonly used for this type of system may consist of. Most important components of the ac system air conditioning compressor on average, it takes about 1 minute for refrigerant to complete a cycle within a typical auto ac system. An air conditioner transfers heat from the inside of a building, where it is not wanted, to the outside. During air conditioning, the outside air brought into a space or the recirculating air within a space should be filtered. Talks about basic electrical wiring and components in a straight cool split type air conditioner.
This signals the air conditioner that it is time to turn on. Basic processes of air conditioning heating supply of heat, relative humidity reduces cooling removal of heat, relative humidity increases fundamentals of air conditioning the purpose of air conditioning is to create a room climate comfortable for people. May 09, 2012 hvac basic concepts of air conditioning 1. The type of system is determined by the device used to control the expansion of the high pressure, high temperature liquid to a low pressure, low temperature liquid. The types of buildings which the airconditioning system serves can be. Components of an air conditioning system hvac info. A chemical refrigerant in the system absorbs the unwanted heat and pumps it through a system of piping to the outside coil. Understanding basic electrical wiring and components of air. Hvac02, air conditioning troubleshooting and repair introduction since im constantly receiving questions on 944 air conditioning systems, i figured its time to come up with come helpful troubleshooting tips.
Fundamentals of hvac controls the application of heating, ventilating, and airconditioning hvac controls starts with an understanding of the building and the use of the spaces to be conditioned and controlled. Introduction and basic concepts of refrigeration and air conditioning. Air conditioning and refrigeration rex miller professor emeritus state university college at buffalo buffalo, new york mark r. Title artculated, performancebased instruction objectives. Pdf top refrigeration and air conditioning question and. A technical sideeffect of air conditioning is that the air is dehumidified and cleaned at the same time. In industry and commercial world, air conditioning is known as hvac heating ventilation and air conditioning systems.
Air conditioners exploit this feature of phase conversion by forcing special chemical compounds to evaporate and. Introduction to commercial building hvac systems and energy. That means, starting as a liquid in the evaporator, the refrigerant changes to vapor, is compressed to high pressure vapor, passes through the condenser, changes back. This is a standardized test, and the higher the seer number, the more efficient the air conditioning unit is. Enable the reader to understand the fundamental principles and operation of the heating. Hvac stands for heating ventilation and air conditioning, is commonly associated with heating and cooling industry. In this type of system, electrical precipitators remove the dust particles from the air. These notes are of easyengineering team prepared notes. Taken literally, air conditioning includes the cooling and heating of air, cleaning and controlling its moisture level as well as conditioning it to provide maximum indoor comfort. The liquid refrigerant absorbs the latent heat of vaporization, making the air cooler. What is hvac basic of heating,ventilation and air conditioning hvac meaning. How to understand the basic operation of the home air conditioning system. Automotive air conditioning training manual 5 how does heat get inside a vehicle.
The cooler air is then blown into the passenger compartment. It is suitable both as a textbook and as a reference book for undergraduate engineering courses in the field of air conditioning, heating, and ventilation. Apr 23, 20 basic refrigeration and air conditioning ananthanarayanan, p n on. When the air temperature rises above a preset level on your thermostat, the thermostat sends a signal to the air conditioner.
In fact, it is difficult to imagine life without air conditioning, refrigeration and freezing their impact on our existence is much greater than most people imagine. When a car is driven or parked in the sun, heat enters the vehicle from many sources. Handbook of heating, ventilation and air conditioning. Download air conditioning and refrigeration books of various titles, authors and publications for free in pdf format air conditioning is a process used to pull out heat from inside of a closed space, to improve the comfort of the living beings inside. Intensive properties do not depend on the size of the system e. Pdf on feb 22, 2019, mohammed gaber and others published refrigeration and air conditioning fundamentals find, read and cite all the. These systems are central systems which provide complete sensible and latent heating and cooling of the air supply. Is it only me or do some of the remarks appear like they are written by brain dead peoplep and, if you are posting at additional online sites, id.
This articles is introduction and basic concepts of refrigeration and air conditioning and pdf. Air conditioning troubleshooting and repair clarks garage. Give an overview of the historical development of the heating and ventilation system and introduction of the air conditioning ac system. Download basic knowledge fundamentals of air conditioning gunt book pdf free download link or read online here in pdf. Air conditioning means processing of air in an indoors environment to maintain temperature. Document resume ed 251 645 ce 040 232 author henderson, william edward, jr. Temperature is controlled either by heating or cooling. An air conditioner ac in a room or a car works by collecting hot air from a given space, processing it within itself with the help of a refrigerant and a bunch of coils and then releasing cool air into the same space where the hot air had originally been collected. What is hvac basic of heating,ventilation and air conditioning. It only effects the amount of moisture in the space. Pdf refrigeration and air conditioning books collection. Introduction to hvac systems one of the systems series.
Pdf airconditioning systems basic airconditioning system. Refrigeration an introduction to the basics danfoss. You dont have to be an airconditioning expert to use spot coolers, but understanding the basics of air conditioning will help you understand how spot coolers work. Top refrigeration and air conditioning question and answers.
Proper air flow through evaporator and condenser is critical for proper cooling. Compressor basic refrigeration cycle evaporator condenser receiver expansion device. Guide for air conditioning, refrigeration, and heating. This is possible both when the vehicle is at a standstill and when it is in operation. As mentioned previously, there are two basic types of air conditioners room.
Working on the 944 ac system is no different than working on any other automotive ac system. Temperature t2 enthalpy leaving air h 2 leaving air w. Basic classification of hvac systems for selection guide prof. Selfstudy programme 208 air conditioner in the motor vehicle.
Basic knowledge fundamentals of air conditioning gunt. Special university course for future engineers lecture notes. Here below list shows the mostly used refrigeration and air conditioning books books by students of top universities, institutes and colleges. Singlepath systems have heating and cooling elements in a series configuration. Muhammad sohaib alam contents page number abstract 1 objective 1 theory 1. Air conditioning clinic trgtrc018en american standard inc. An understanding of these rules helps greatly in understanding the systems. Air conditioning theory there are two laws that are significant to understand the basic refrigeration cycle and air conditioning. This is known as the law of heat transfer, and is the basis of air conditioning operation. To an area where it makes little or no difference to the user or homeowner. Provide the reader with a case study on the design and optimisation of an air conditioning ac system. With the help of an air conditioner it is possible to produce at the air outlets a temperature which is much lower than high outside air temperatures. I will start this air conditioning basics tutorial on a very simple and nontechnical level with laymans terms, and then discuss technical details later.
Principles of heating, ventilation, and air conditioning. The basic refrigeration cycle is similar for many refrigeration and air. However, rather than providing a detailed reference list, each chapter is accompanied by a short list of. Hvac basic concepts of air conditioning slideshare. Air filters are an essential part of any hvac system as they allow for the removal of particulate contaminants in the supply air that would otherwise be harmful to the. The basic steps in the development and use of an airconditioning project are design. In humid climates, provide allair systems for air conditioning. These sprays may also serve to humidify or dehumidify the air to some extent. These all air conditioning and refrigeration pdf free download here provide also useful for the study other state and india level exams like ssc jen, bsnl je and jto exams, railways jen and section engineers, drdo, dmrc, metro, many other state level and india level engineering exams.
Design guide for heating, ventilating, and air conditioning systems. This is an introduction to air conditioning systems frequently referred to as hvac systems heating, ventilating and air conditioning systems. In some large airconditioning systems, air is cleaned by electricity. Refrigeration and air conditioning dvd 1 this dvd is a compilation of the following titles. The ohmmeter uses leads to com plete the circuit to the device under test. Latent heat is important in the operation of an air conditioning system because the cooling effect is derived from changing the state of liquid refrigerant to vapor. A textbook of refrigeration and air conditioning by r.
A slightly positive pressure to reduce outside air infiltration. The basics of home air conditioning systems this old house. Download air conditioning and refrigeration books pdf. There are several types of air conditioning units to choose from, depending on the specific needs of your home. Gtac 1 air conditioning basic theory introduction to air conditioning gtac11 a basic introduction assuming no previous knowledge of the subject matter. Basic processes of air conditioning heating supply of heat, relative humidity reduces cooling removal of heat, relative humidity increases fundamentals of air conditioning the.
Air conditioning is a process where heat is removed from an area that it is not wanted. The top and best refrigeration and air conditioning books books collection are listed in the below table as well as refrigeration and air conditioning books books pdf download link. The danfoss product range for the refrigeration and air. The goal of the heating, ventilating, and air conditioning hvac system is to create and. Dec 27, 2014 talks about basic electrical wiring and components in a straight cool split type air conditioner.
An air conditioner is able to cool a building because it removes heat from the indoor air and transfers it outdoors. Air in an air conditioner may be purified or cleaned by filters, air washing, or electricity. When a hot cup of coffee is set aside for some time, it becomes cold. Air conditioning means processing of air in an indoors environment to maintain temperature, humidity, air quality cleanliness, air motion and ventilation. Mar 04, 2010 refrigeration and air conditioning dvd 1 this dvd is a compilation of the following titles. That means, starting as a liquid in the evaporator, the refrigerant changes to vapor, is. Air conditioning and refrigeration is the electronic device where the temperature is maintained accordingly as per the need and relieves from the scorching heat. Figure the latent heat of vaporization that water vapor stores is released when the vapor condenses to a liquid. Pdf air conditioning system heating and cooling process. Now the minimum efficiency, the builders model, is rated a 10 and they go all the way up to 18. Pdf refrigeration and air conditioning fundamentals. But your air conditioner actually removes warm air and recirculates it as cool air. Air conditioning and refrigeration notes free pdf download. Use of the voltammeter is a quick way of testing the airconditioning or refrigeration unit motor that is drawing too much current.
They think that an air conditioner functions by pumping cool air into their home. All control systems operate in accordance with few basic principles but before we discuss these, lets address. The same ducts used to heat the house in the winter carry cool air in the summer. Rooms typically have several complete air changes per hour. Basic concepts of air conditioning prepared exclusively for coach leatherware 2. Jan 06, 2017 an air conditioner ac in a room or a car works by collecting hot air from a given space, processing it within itself with the help of a refrigerant and a bunch of coils and then releasing cool air into the same space where the hot air had originally been collected.
It is intended for those engineers, architects and construction professionals who are only peripherally involved with hvac systems in their professional activities, but would like to learn more about. Air cooled water cooled tube and fin shell and tube plate evaporative. The purpose of air conditioning is to create a room climate. Also, details how the parts work and how the electrical works. 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. How air conditioning works the essential ingredients in an air conditioning system are a fan to blow air around, a cold surface to cool and dehumidify the air, a warm surface and a source of water vapour. Evaporator air flow check to make sure the blend air door is operating check cabin air filter and any intake air restriction usually leaves building up at base of windshield condenser air flow. Heat moves out of the hot 90 c coffee into the cooler 25 c surrounding air. 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. The conditions for describing comfort are standardised in accordance with din 1946 and din en 779. Basic air conditioning formulas to determine cooling total airflow infiltration or ventilation number of air changes per hour total number of air changes per hour outdoor air total heat ht sensible heat h s latent heat hl leaving air d. Hvac basics welcome to the school of engineering and.
Air conditioning technology introduction basic knowledge 1 heating cooling humidifying dehumidifying for full air conditioning there are four partial functions. Included in the basics of electricity and the primary lesson in electricity is electrical safety. Extensive properties depend on the size of the system e,g, volume, internal energy, enthalpy, etc. Getting the picture, technical sketching, isometric drawing, simple. Air conditioning system heating and cooling process author.