Modern life is incomplete without refrigeration and air conditioning . Both of these systems are fairly different, though their very basis is dependent on the principles of thermodynamics for the control of temperature. Purpose and Applications Preservation by keeping things at a persistently low temperature is the main work of refrigeration to prevent items from spoiling and to protect temperature-sensitive things such as medicines from getting spoiled. The most commonly known thing that pertains to refrigeration systems is refrigerators and freezers, which have long-term preservation due to maintaining temperatures significantly below the ambient level. Air conditioning, on the other hand, is used to enhance human comfort by the cooling and dehumidifying effects on the air inside the building. Air conditioners are generally employed in buildings, offices, and vehicles to regulate temperature effects, improving air quality and making an environment comfortable. Refrigeration has a dif...