This chilled-water is then circulated through the entire building by the use of a pump. As with all air conditioning systems the principle remains the same whereby the heat is removed from one area and replaced with chilled dry air and the hot air is expelled, normally to the outside atmosphere. 114 hvac interview questions and answers pdf ebook, Poland : Alternative sources of Energy and Recycling, No public clipboards found for this slide. The outside air flows through a damper and mixes with the recirculated air. Heat is a form of energy. The rotary compressor can be divided into two types. The basic concept behind air conditioning is said to have been applied in ancient Egypt, where reeds were hung in windows and were moistened with trickling water. In recent years, DC inverter air conditioner is becoming more popular compared to the conventional air conditioner due to its many advantages. AC Induction Motor. Scribd is the world's largest social reading and publishing site. The text emphasizes the application of theory to both designing new systems and troubleshooting existing ones. 52. You don’t have to be an air-conditioning expert to use Spot Coolers, but understanding the basics of air conditioning will help you understand how Spot Coolers work. INTRODUCTION  Air conditioning is the process of altering the properties of air to more favorable conditions. Thermodynamics’ first law explains that energy cannot be neither created nor destroyed, but can be … Air conditioner (AC) working principle An air conditioner collects hot air from a given space, processes it within itself with the help of a refrigerant and a bunch of coils and then releases cool air into the same space where the hot air had originally been collected. Now customize the name of a clipboard to store your clips. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. The working principle of air conditioning is Vapor Compression Cycle. On completion of this course, students should be able to 1. is a system or machine that performs three major functions by its three separate ducts i.e heating, cooling and ventilation of air, generally used in residential commercial or Industrial buildings. Basic Concepts of Air Conditioning Prepared exclusively for COACH LEATHERWARE. Audiobooks. Air Conditioning Principles and Systems 4th edition by Edward G. Pita. You can change your ad preferences anytime. This process also made the air more humid, which can be beneficial in a dry desert climate. Sign In Join. Chapter 01 - Refrigeration Principles.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Schematic for the system is arranged. No public clipboards found for this slide. Intensive properties do not depend on the size of the system e.g. However, first let’s understand air conditioning theory, the basic principle, types of heat, how heat transfers and we’ll discuss how the basic refrigeration cycle diagram works. PRINCIPLES OF COOLING . In practice other factors must also be taken into account especially cleanliness; odor; velocity & distribution pattern. Clipping is a handy way to collect important slides you want to go back to later. Evaporator Coil• Provides cold air to the space• Located after the system air filters• Return air is blown over the coil and chilled• Removes moisture from air (condensate)• Traps dirt that gets past air filters, reducing cooling capacity (95% is bacterial)• Requires periodic chemical cleaning Slide 28 29. The air moving inside the room and the front part of the air conditioner where the cooling coil is located is considered to be the cool air. pressure and temperature etc. The compartments of the room and hot air are separated by an insulated partition inside the body of the air conditioner. Principles of Refrigeration Based in Second law of thermodynamics. Heat doesn’t flow from a low temperature bodyto high temperature body with out the help of anexternal work. External work is done byCompressorCondenser etcTerminologies of RefrigerationRefrigerating Effect (N): It is defined as thequantity of heat extracted from a cold body orspace to be cooled in a given time. If you continue browsing the site, you agree to the use of cookies on this website. Works to compress and pump the refrigerant in the air cooler the Rotary compressor can be beneficial a! 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