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Walk-in cooler ammonia condenser
walk-in cooler ammonia condenser, usually there is a dirt collection bag welded under the shell to collect lubricating oil and mechanical impurities. The heat transfer tube in the
ammonia horizontal walk-in cooler condenser is generally 25mm, 32mm or 8mm seamless steel pipe. In order to strengthen the heat transfer effect, some condensers now also use threaded pipes and horizontal ribs. The threaded tube is rolled by a 25mmX2.5mm smooth tube with a ribbing factor of 2.75. Under the same conditions, the heat transfer coefficient of the threaded tube ammonia horizontal condenser is more than 40% higher than that of the bare tube. The horizontal tube is 5mm× the 2.5mm smooth tube is processed by mechanical rolling, and the outer surface is 90 degrees with the tube axis. The crossing angle is 90°C with the pipe axis. The cross-angled transverse grooves have corresponding ribs in the tube with a pitch of 9mm and a groove depth of 0.8mm. The heat transfer coefficient of horizontal tube ammonia condenser is 65% higher than that of light tube. The structure of the
fluorine horizontal walk-in cooler condenser is similar to that of the horizontal walk-in cooler condenser for ammonia. The heat transfer tube can be steel tube or copper tube. When copper tube is used, the heat transfer coefficient can be increased by about 10%. Copper tubes are usually processed with fins on the outside of the tube to facilitate heat transfer on the fluorine side. This ribbing treatment can save 30%-50% of the copper material, thereby greatly reducing the volume and quality of the condenser. The small Freon walk-in cooler compressor and the shell and tube horizontal condenser generally constitute a compression condensing unit, so it is easy to install and has a small footprint. The disadvantage of the shell and tube horizontal condenser is that the water quality of the cooling water is high, the resistance of the cooling water flow is relatively large, and the scale cleaning is more difficult.
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