The Nuts and Bolts of an Air Conditioner

The term AC as we all knows stands for Air Conditioners. AC refers to the process of cooling and

dehumidification of indoor air for thermal comfort. In other words the term AC refers to any form of cooling,

heating, ventilation or disinfection that modifies the condition of air. Air Conditioners in various countries like in

North American English, aircon in British and Australian English is an appliance, system, or mechanism

designed to stabilise the air temperature and humidity within an area used for cooling as well as heating

depending on the air properties at a given time, typically using a refrigeration cycle but sometimes using

evaporation, most commonly for comfort cooling in buildings and motor vehicles.

Now what is refrigeration cycle? The simple answer to this question is that both Thermodynamic heat pump and

refrigeration cycles are the models for heat pumps and refrigerators. Moreover the only difference between them

two is that heat pumps can change from cooling to heating and refrigerators and air conditioners since they are

technically refrigerators which are designed to cool only but the heat pump cycle does not cooperates with the

refrigerator cycle. But another way, a heat pump can choose which side of the system rejects the heat that was

accepted by the evaporator and moreover heat pump removes heat from a low-temperature source, and expels

it to a high-temperature sink, with the help of external mechanical work. Mechanical work is a work in which

amount of energy is transferred by a force and most importantly it is a scalar quantity.

Now the application Of Air Conditioners: Before knowing the application of AC you must know that Air

conditioning engineers broadly divide the air conditioning applications into comfort and process. Now about

Comfort Application, well the aim of Comfort applications is to provide na indoor environment that remains

relatively constant in a range preferred by humans irrespective of changes in external weather conditions or in

internal heat loads.

The highest performance for tasks performed by people seated in an office is expected to occur at 72 °F (22

°C). Performance is expected to degrade about 1% for every 2 °F change in room temperature. The highest

performance for tasks performed but standing is needed to occur at little lower temperatures. The extraordinary

performance for tasks performed more number of people is expected to occur at little lower temperatures. The

performance for tasks performed by smaller people is expected to occur at slightly higher temperatures. There

are various categories on which comfort Application are built upon. These are
Low-Rise Residential buildings, including single family houses, duplexes, and small apartment buildings and

High-Rise Residential buildings, such as tall dormitories and apartment blocks

Now something about Process application. Its aim is to provide a suitable environment for a process being

carried out, regardless of internal heat and humidity loads and external weather conditions. These types of

application includes Hospital operating theatres, in which air is filtered to high levels to reduce infection risk and

the humidity controlled to limit patient dehydration and Clean rooms for the production of integrated circuits,

pharmaceuticals, and the like, in which very high levels of air cleanliness and control of temperature and humidity

are required for the success of the process.