For vapor compression refrigeration system, the role of the condenser is the compressor discharged by the high temperature refrigerant vapor condensation into liquid refrigerant. Condenser commonly used air, water and other room temperature fluid cooling, and sometimes also use a lower temperature of other fluid cooling. Condenser is a refrigeration system to the surrounding environment to focus on exothermic important equipment, is one of the four major components of the refrigeration system.
Therefore, the condenser is good or bad or not will have a direct impact on the size of the refrigeration system cooling capacity and refrigeration efficiency. With the continuous development of the refrigeration industry and the rapid expansion of the application of the surface, the types of condensers are endless, the cooling capacity of the size of the difference, and the efficiency is constantly improving. Commonly used condenser can be simply divided into air (gas) cold (also known as air-cooled), water-cooled and water - air mixed cooling three categories.
The air-cooled condenser is a condenser that condenses refrigerant vapors into liquid using air from the surrounding environment. According to the air flow, air-cooled condenser can be divided into natural convection and forced convection type two.
Water-cooled condensers utilize water for cooling. Because the thermal conductivity and specific heat capacity of water is much higher than air, the condensing capacity of water-cooled condenser is large, suitable for cooling capacity of the system selection. Water-cooled condenser cooling water can be tap water, you can also use rivers, lakes and sea water (seawater corrosive), but the cooling water quality should be good, corrosive to small, hardness should be small (not easy to form scale). Cooling water can be used once, can also be recycled. Recycling of cooling water needs to be equipped with cooling towers, cool pools and other equipment in order to make the cycle of cooling water in these devices to cool down after re-use.
Water-cooled condensers can be divided into three types: horizontal shell and tube, vertical shell and tube, and casing type, depending on the structure. Water - air mixed cooling condenser utilizes the water and air two media for cooling, combined with water-cooled condenser and cooling tower functions, both water and economic, very suitable for suburban and rural use. This kind of condenser is divided into evaporative condenser and drench condenser two kinds. In fact, the choice of condenser should be based on the size of the heat release, the use of occasions and water sources and other actual conditions.
(Photo / text / photo: car selection small brother) @2019