The definition of an air conditioning system for arms is a system that is designed to cool and regulate the temperature of the air in a particular space. This type of system is often used in military and law enforcement applications, as it helps to maintain a comfortable environment for personnel and equipment. An air conditioning system for arms is typically composed of several components, including an air compressor, evaporator, condenser, and expansion valve. The air compressor is responsible for compressing the air and sending it to the evaporator, where it is cooled and dehumidified. The cooled air is then sent to the condenser, where it is cooled further and the humidity is removed. Finally, the cooled air is sent to the expansion valve, where it is regulated and sent to the desired area. This type of system is highly efficient and helps to maintain a comfortable environment in areas where the temperature can fluctuate greatly.