An ice maker is a mechanical device that produces ice after water is cooled by the refrigerant of the refrigeration system through an evaporator. According to the different condensation methods of the ice maker, the ice maker is divided into a water-cooled ice maker and an air-cooled ice maker. How to choose the condensation method of the
Tube Ice Machine? Generally, small ice machines (daily production of 0.1-5 tons) use more air cooling, and large and medium-sized ice machines (daily production of 5-100 tons) use more water cooling. The main difference between water-cooled and air-cooled ice makers is that water-cooling uses water as a carrier to cool the ice maker. 1. Air-cooled condenser, in which the refrigerant passes through a long tube (usually coiled into a solenoid) to dissipate the heat to the surrounding air. The copper tube has strong thermal conductivity and is often used to transport steam. In order to improve the efficiency of the condenser, fins with excellent thermal conductivity are often added to the pipeline to increase the heat dissipation area to accelerate the heat dissipation, and the fan speeds up the air convection to take away the heat. 2. The water-cooled condenser is from the inlet of the tube on the tube, and then flows through the baffle channels in a zigzag manner to the outlet of the tube. The cooler medium adopts double-pipe flow, that is, the cooler medium enters one half of the cooler pipe from the water inlet through the water distribution cover, and then flows from the return water cover into the other half of the cooler pipe into the other side water distribution cover and outlet pipe. . In the process of double-pipe-pass flow of the cold medium, the waste heat released by the absorbing heat medium is discharged from the water outlet, so that the working medium maintains the rated working temperature. 3. The difference between water cooling and air cooling and the comparison of advantages and disadvantages 1. The advantages of air cooling condenser: (1) No water resources, low operating cost; (2) Easy to install and use, no other supporting equipment is required, as long as the power is connected It can be put into operation; 3) It does not pollute the environment; (4) It is suitable for areas with severe water shortage or rare water supply. 2. Disadvantages of air-cooled condensers: 1) The cost is higher; (2) The condensing temperature is higher, which reduces the operating efficiency of the refrigeration unit; (3) It is not suitable for areas with dirty air and dusty climate. 3. The advantages of water-cooled condensers: (1) make the condensing temperature of the refrigeration unit lower and improve the refrigeration efficiency; (2) the initial investment cost is lower than that of air cooling and evaporative cooling; (3) the cooling effect is good, suitable for medium and large refrigeration systems . 4. Disadvantages of water-cooled condensers: (1) It consumes water resources; (2) Spraying water has some impact on the surrounding environment; (3) It is necessary to purchase water towers and install waterway systems and water supply systems. 4. Understand the limit condensing temperature of the refrigeration system. To choose the condensation method of the ice machine, you must first understand the ambient temperature. Not higher than 55°C, not lower than 20°C. Generally, water-cooled condensers are not recommended for areas where the ambient wet bulb temperature exceeds 42°C. Therefore, whether to choose a water-cooled condenser, first confirm the ambient wet bulb temperature. Generally, when designing a water-cooled ice maker, the customer must be required to provide the highest ambient wet bulb temperature throughout the year in the local area. At the same time, when the ambient temperature exceeds 50°C, the condenser cannot be cooled with water, and the cooling tower is easily damaged by the high temperature. The cooling tower must be used under sun protection. 5. Comparison of air-cooled and water-cooled ice machines, the right is the air-cooled flake ice machine, and the left is the water-cooled flake ice machine.
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