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Shell and tube vertical walk-in cooler condenser
author: supermarket refrigerated showcase category: commercial refrigeration Views: 611Time: 2016-08-22
Shell and tube vertical walk-in cooler condenser
Shell and tube vertical walk-in cooler condenser is abbreviated as vertical walk-in cooler condenser, suitable for large and medium-sized walk- in cooler Ammonia refrigeration system. The structure of the vertical condenser, whose shell is rolled by steel plate and welded into a cylindrical shape, with tube plates welded at both ends, the heat transfer tube is fastened with the tube plate by welding or expansion, and the condenser is installed vertically. The top of the vertical condenser is equipped with a water distribution box. The cooling water flows from the water tank through the water leveling plate, enters the water separator on the top of each heat transfer tube, and then enters the walk-in cooler heat transfer tube. It forms along the inner surface of the tube under the action of gravity. The membrane flows into the pool. The structure of the
walk-in cooler water separator is generally made of cast iron, bakelite, ceramics and other materials. The water divider made of cast iron is easy to block the channel after rust: the water divider made of ceramic is relatively smooth and has low resistance, so that the water flows evenly into the walk-in cooler heat transfer tube, but the material is brittle, so it should be protected during transportation. Shattered. The walk-in cooler made of bakelite is smooth and will not rust, and is not easy to break. Currently, it is used more frequently. In addition to making the water flow uniform and enhancing the heat transfer effect, the equalizing plate and the water separator can also reduce the impact of the water flow and slow down the impact and corrosion of the heat transfer tube by the water flow. After the high-pressure superheated ammonia discharged from the walk-in cooler compressor is separated from the refrigerating machine oil by the oil separator, it enters the outer space of the condenser from the upper part of the cylinder, and is cooled outside the vertical tube, and the condensed liquid exits from the bottom of the cylinder. The liquid port flows into the accumulator. The heat transfer tube of the walk-in cooler condenser generally uses a seamless steel tube of lmmX3.5mm or 1.38mmX3mm. In order to improve the heat transfer effect, some ribbed tubes are also used.
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