IIChE NITR

  COOLING TOWER: Cooling towers are a special kind of heat exchanger devices where air and hot water are brought into direct contact with each other in order for the evaporative cooling to take place and the temperature of the water to drop due to it. During evaporative cooling process the air has to be unsaturated so that it can store the evaporated water vapours and for the water to change its phase from liquid to gas, latent energy is required which the water absorbs from the surrounding. Common applications  include cooling the circulating water used in oil refineries, petrochemical  and other chemical plants, thermal power stations, nuclear power stations and HVAC systems for cooling buildings etc.       Working of a cooling tower: The working principle of a cooling tower is evaporative cooling. The hot water is input in the equipment from the ...

COMPRESSOR : Compressor , device for increasing the pressure of a gas by mechanically decreasing its volume. Air is the most frequently compressed gas but natural gas, oxygen, nitrogen, and other industrially important gases are also compressed. Compressors supply the air flow for all equipment in a system. Air compressors work in two phases: the compression operation and the release operation. The purpose of an air compressor is to convert power (using an electric motor, diesel or gasoline engine, etc.) into potential energy stored in pressurized air (i.e., compressed air). By one of several methods, an air compressor forces more and more air into a storage tank, increasing the pressure. Working of a compressor :   Heart of the air conditioning system The Air Conditioning Process Your air conditioner pulls warm air through return air vents in rooms throughout your h...