Learning the basics of how an ac works can help you troubleshoot issues and prevent future problems. Air conditioning 101 how central air conditioning systems work. The air conditioning in a car is a great example of this in action. Basics of air conditioning most people dont realize how their central air conditioner actually works. In a large system there will also be a tangle of tubes to distribute the air and collect it again. This explanation of air conditioning and hvac basics will expand a little bit on the air conditioning cooling process. Graphics and animations are used in an attempt to make it easy to understand the concepts involved. 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. If you have a window open, air from outside flows in and gets cooled. Learn the basics about air conditioning from this detailed presentation. The rbiii cd introduced basic principals and demonstrated the interdependency between the refrigerant, airwater and electrical sides of a system.
It consists of an outdoor unit that sits on a small concrete pad and an indoor coil located in the furnace plenum or the air handler. Air conditioning therefore means to affect the room air in such a way that people are comfortable and their productivity is not impeded. The first topic to discuss about air conditioning and hvac basics will be the laws of thermodynamics that describe how heat moves. Introduction and basic concepts of refrigeration and air. A slightly positive pressure to reduce outside air infiltration. This is a standardized test, and the higher the seer number, the more efficient the air conditioning unit is. We all enjoy our air conditioners in the summertime. Some of the heat from the food would be carried away by.
In the past, this was done by collecting ice in the winter and using its specific heat to cool as the ice melted. Get the basics about hvac systems so you can make an educated purchasing decision. Fundamentals of hvac controls course content 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. Here is a guide to the parts and processes involved in an air conditioning system. The types of filters that can be used consist of permanent or throwaway. This is yet another of the air conditioning basics. Maintaining an efficient, working hvac system is paramount to keeping management smooth and providing thermal comfort. Cooling systems are normally considered as part of the ac in hvac. This means the air conditioning system uses a chemical substance known as a refrigerant to remove heat from the air. May 09, 2012 learn the basics about air conditioning from this detailed presentation. To get the best out of your air conditioning, you have to keep every window and door closed.
You might have heard of freon, an older type of refrigerant thats actually being phased out, but still used in many older systems. Air conditioning clinic trgtrc018en american standard inc. The popular ductless air conditioning system is technically a split system, and its sometimes called a minisplit system. An airconditioning system, by ashrae american society of heating, refrigerating and airconditioning engineers definition, is a system that must accomplish four objectives simultaneously. 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. If youre thinking of replacing your air conditioner, keep cool and read this first.
R4a properties since 1993 the automotive industry of developed countries has started to use a nonozonedepleting refrigerant hfc 4a hydrofluorocarbon, its chemical name being tetra fluoroethane. Hvac stands for heating, ventilation, and air conditioning and is a complex branch of engineering. In simplest term, the control is defined as the starting, stopping or. 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 building occupants, or build up. They are usually made of fibrous material that collects the particles of dust and other foreign matter from the air as it passes through the filter.
The a weighting scale is used to better estimate how the human ear hears sound pressure. Give an overview of the historical development of the heating and ventilation system and introduction of the airconditioning ac system. Understanding and learning the basics of hvac to understand air conditioning and heat pump applications you will need to study refrigeration. In the first section of part 1 it describes how the ambient environment influences human body comfort. The term air conditioning has gradually changed, from meaning just cooling, to the total. In humid climates, provide allair systems for air conditioning. Fundamentals of hvac controls course content fundamentals of hvac controls the application of heating, ventilating, and airconditioning hvac controls starts with an. Jul 24, 2017 this is yet another of the air conditioning basics. The condition of the air is characterised by temperature, pressure and humidity. Understanding air conditioning is not only for certified technicians.
Simple variable air volume vav, dual duct system and multizone system. Electricity can be very dangerous and safety needs to be practiced. Hvac basic concepts of air conditioning slideshare. Air conditioning has changed over the years, the hvac system is used to control the environment in the manufacturing as well as the storage area of the pharmaceutical facility. Youve probably seen a ductless air conditioning systemthink of the air conditioners that are mounted on the inside wall of a room in a house. In this article we learn hvac for beginners along with the processes of air conditioning, comfort zone within a psychometric chart and a discussion about the need for comfort air engineering. Feb 26, 2010 a split air conditioner is the typical central air conditioner found in many u. Air conditioners use refrigeration to chill indoor air, taking advantage of a remarkable physical law. Included in the basics of electricity and the primary lesson in electricity is electrical safety. As always, contact your local trane comfort specialist if you have additional questions. Below table provides you pdf air conditioning and refrigeration book by r. Air conditioning 101 how central air conditioners work ac basics easily explained. The rbiii cd introduced basic principals and demonstrated the interdependency between the refrigerant, air water and electrical sides of a system.
Provide the reader with a case study on the design and optimisation of an airconditioning ac system. The cooler air is then blown into the passenger compartment. Heating, ventilation and air conditioning systems are tasked with circulating fresh air within living spaces, while maintaining the optimal temperature to keep the occupants comfortable. If you continue browsing the site, you agree to the use of cookies on this website. When a car is driven or parked in the sun, heat enters the vehicle from many sources. Hvac basics welcome to the school of engineering and.
Automotive air conditioning training manual 5 how does heat get inside a vehicle. What is hvac basic of heating,ventilation and air conditioning hvac meaning. The liquid refrigerant absorbs the latent heat of vaporization, making the air cooler. Handbook of heating, ventilation and air conditioning. When a liquid converts to a gas in a process called phase conversion, it absorbs heat.
Hvac systems and maintenance are easy to understand and maintain once you have a basic knowledge of how the system is set up and runs. Air in an air conditioner may be purified or cleaned by filters, air washing, or electricity. The next section covers the air cycle and how air is used to deliver and. May 07, 20 just a short video explaining the basics of how most refrigeration systems operate. During air conditioning, the outside air brought into a space or the recirculating air within a space should be filtered. Introduction and basic concepts of refrigeration and air conditioning.
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. But did you ever wonder how that machine creates such wonderful cool air. But your air conditioner actually removes warm air and recirculates it as cool air. Just a short video explaining the basics of how most refrigeration systems operate.
Introduction to hvac air conditioning clinic trgtrc018en american standard inc. It only effects the amount of moisture in the space. Generally motor vehicles use heat from combustion which is transferred through water or air depending on whether the engine is water or air cooled. 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. A split air conditioner is the typical central air conditioner found in many u. This section explains in basic terms the principles that are used to create the refrigeration effect. That heat when increased or decreased to a previously steady state environment, will not change the dry bulb temperature of that space. Single zone system, constant air volume and reheat system. 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. Download free mep calculation excel sheets, autocad drawings, and training courses for hvac, firefighting, plumbing and electrical systems design. Basic refrigeration and air conditioning ananthanarayanan, p n on. Take the simpleair air conditioning 101 lesson and learn the basic terms and components you will need to know to begin properly maintaining your home system. Heating, ventilation and air conditioning is a system that is used to control the air temperature by controlling the air filtration and the moisture in the air. Enable the reader to understand the fundamental principles and operation of the heating.
There are a number of different methods available to heat the air exhaust heater,heat as a byproduct of combustion,electric heater etc. 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 building occupants, or build up in the ductwork or equipment. Part 1 has four sections that describe the basic principles of air conditioning systems. Both air conditioners and heat pumps use refrigeration to move heat. Provide the reader with a case study on the design and optimisation of an air conditioning ac system.
Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. This filter is to stop dust and other debris from getting inside the unit, which could mean you need costly repairs. Give an overview of the historical development of the heating and ventilation system and introduction of the air conditioning ac system. The danfoss product range for the refrigeration and air.
Its hard to find a modern air condtioning or heating system that doesnt use electronic components. That means, starting as a liquid in the evaporator, the refrigerant changes to vapor, is. Air conditioning basics prev next air conditioners use refrigeration to chill indoor air, taking advantage of a remarkable physical law. Now the minimum efficiency, the builders model, is rated a 10 and they go all the way up to 18. Hvac fundamentals be familiar with basic hvac terminology understand the fundamentals of the. Home comfort experts offers a simplified version of how your air conditioner works to help you understand and appreciate this amazing piece of equipment. Air conditioning and refrigeration notes free pdf download. Download hvac fundamentals training course hvac systems design basics course pdf notes for free. It is intended to maintain invehicle temperature and humidity within a range that is comfortable for the people inside and provide fresh, clean air. Air conditioning 101 learn basic terms for home hvac. They think that an air conditioner functions by pumping cool air into their home. Rooms typically have several complete air changes per hour. I will start this air conditioning basics tutorial on a very simple and nontechnical level with laymans terms, and then discuss technical details later.
So make sure the air conditioning unit has a rating of 10 or higher. These systems are central systems which provide complete sensible and latent heating and cooling of the air supply. Know how your central ac works so you can save money by keeping it running and ready if it breaks. In front of either one or both of the fans in your air conditioning unit, you can find a removable filter depending on your model. Jul 19, 2016 i show the basics of your air conditioner so you have some knowledge of the system. In the summer heat, air conditioning is a welcome relief, but do you know how it keeps you cool. Consider this photo of an old condensing unit that was manufactured in the 1980s.
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