The working principle of cooling tower
Cooling tower is to use water and airy contact, through evaporating action drops off industry a kind of equipment of the useless heat that go up or produces in refrigeration air conditioning. Fundamental is: Dry (low enthalpy is worth) after what air passes fan is throbbing, enter cooling tower from place of the net that take wind inside; The member of high temperature water with old pressure of saturated vapour cent flows to the air with low pressure, damp and hot (high total heat is worth) water asperses a tower from the system that seed water inside. When water and air are contacted, on one hand as a result of air and not conduct heat directly, because water vapour surface is mixed,on the other hand existence pressure is differred between air, below the action of pressure generation evaporate discovers an elephant, take evaporate to go at present latent heat, water medium quantity of heat is taken away evaporate namely conduct heat, achieve the goal that drop in temperature thereby. The working process of cooling tower: The working process of tower of refluent type refrigeration is the circle exemple: Hot water passes water pump to pass conduit, horizontal larynx, music larynx, center larynx to will circulate with constant pressure from mainframe house hydraulic inside the system seeding water to cooling tower, asperse in filling through sowing water the alveolus on conduit equably above; The air that dry low Han is worth enters wind net to enter a tower by bottom below the action of fan inside, hot current classics forms water film and air to undertake heating up exchange when filling surface, the sirocco that high humidity Gao Han is worth is taken out from coping, cooling water enters bottom basin inside, flow into lead plane via giving conduit. Usually, enter the air inside the tower, it is dry the air of temperature of low wet ball, the chroma difference that there is water element apparently between water and air and kinetic energy pressure are poor, when fan moves, static inside the tower below the function that control, water element evaporates to the middle of air ceaselessly, become vapor member, the average kinetic energy of element of the rest water can be reduced, make abide waterlocked temperature drops thereby. From above the analysis can see, evaporate drop in temperature with airy temperature (the dry ball temperature that says normally) under or prep above water is warm have nothing to do, want water element to be able to evaporate to the middle of air ceaselessly only, water is warm can reduce. But, water evaporates mediumly to undertake won't unendingly going down to air. When the air that should contact with water is not saturated, water element evaporates to the middle of air ceaselessly, but when the air that goes up when hydrosphere interface reachs saturation, water element evaporates not to go out, be in condition of a kind of dynamic balancing however. The water element measure that sends is equal to evaporate to return the amount of the water element in water from inside air, water is warm keep changeless. Can see from this, the air that contacts with water is drier, evaporate to undertake more easily, water is warm reduce easily.
Previous12 Next
Hot Tags: