Mechanism And Principle Of Air Conditioning

Ever wondered how you get cool breeze from air conditioner. What is the mechanism actually involved in producing cold air in burning hot summers? Here is the simple diagrammatic explanation of working principle of an air conditioner. No matter what type of air conditioner you are using, windowed, split wall mounted (PTAC), cabinet floor standing or roof top type, basic principle is same for all of them. Even inverter air conditioner that has got modifications in primitive design still follows the same principle and laws of thermodynamics.



Basic Mechanism And Principle

principle-mechanism-of-air-conditioner-diagram
Explanation:   Every air conditioner (also pronounced as AC, A/C or Air Cooler in certain regions of the world) has got a compressor inside it. It works to compress and pump the refrigerant gas. Compression of refrigerant produces heat. To dissipate this heat, compressed refrigerant is pumped to the condenser coils where a fan blows the heat out to outer atmosphere. During this process, refrigerant takes the liquid form. This liquid refrigerant is pumped towards expansion valve. Expansion valve has a temperature sensor connected to it which works in correlation with thermostat settings. Expansion valve releases the appropriate amount of refrigerant to evaporator (cooling coils) where liquefied refrigerant takes gaseous form. Conversion from liquid to gaseous state due to expansion causes cooling because energy is absorbed from the surrounding. Air when passes through fins (attached to coils) gets cooled and blown to the room. The gaseous refrigerant in cooling coils then enters the compressor and gets compressed once again. The cycle continues unless the compressor is shut down.

In a nutshell, air conditioner draws heat from the indoor and releases it to the outdoor. Indoor acts as a source and outdoor as a sink for heat.

In vehicle air conditioners, a Receiver-Drier is installed between condenser and expansion valve. It serves to collect excessive refrigerant when not required for cooling operation. It also has got a desiccant which absorbs any moisture present in the refrigerant.



Inverter air conditioners:   These air conditioners use an inverter to control the speed of compressor. Electricity is first rectified to DC (direct current) and then inverted back to required frequency AC (alternating current) using pulse width modulation. Thus compressor speed can increase and decrease according to the room temperature. Such air conditioners are extremely energy efficient and consume approximately 30-60 % less electricity than old fashioned air conditioners. Inverter air conditioners are expensive due to the additional machinery inside them but cost is slowly recovered in electricity bills. Their other advantages include quiet operation, faster cooling, no indoor temperature fluctuations and no voltage peaks caused by compressor.

Air conditioner as a heater:   When air conditioner is used as a heater, the process which is shown and explained above just simply gets reversed. As a result of reverse mechanism, hot air is propelled towards indoor and cool air towards outdoor.




Related Posts

Why I Use Norton Internet Security I have been using Norton antivirus and other related Norton products since 2003 when there was no notable competition in the world of antivirus applic...
Laboratory Method For Preparation Of Distilled Water The method described here is used in laboratories to prepare pure distilled water. But the basic method remains the same if you want to prepare it at ...
Why Lead Acid Batteries Die Earlier Than Expected – Reasons There are several reasons behind failure of lead acid battery much earlier than expected. Some major reasons are elaborated here which cover both seal...
MediaCoder Review: Freeware Universal Media Converter, Transcoder A media transcoding software is always required to convert an audio or video file from one format or container to another format or container with req...
How To Recover From Effects Of Google Algorithm Changes – Self Help Guide Google is updating its search engine algorithm frequently which has widely affected numerous websites including some reputed large websites. This webs...
Problems and Solutions after Moving from Blogger to WordPress You have moved your blog from Blogger to self hosted WordPress! Congratulations, you did perfectly right. Blogger platform is good in its own way but ...
Homage Inverters (UPS) – Specifications And Solutions For Problems Here are the specifications of three models of Homage Inverters, Vision 500, Vision 1000 and Vision 2000, and common problems with solutions. S...
How To Use Task Manager On Slow Android Phone Without Losing Performance When Task Managers or Task Killers which are available at Google Play Store are used, many people complain about loss of performance, speed degradatio...
163 Comments

Add a Comment

Your email address will not be published. Required fields are marked *