Evaporative display cases Condenser
Evaporative display cases Condenser
Evaporative display cases The structure of the condenser, its shell is a rectangular display cases with a thin steel plate, and an array of serpentine condenser tubes, water spraying devices and The water retaining grid has a water collecting pan at the bottom and a circulating water pump outside the display cases. The top or side of the display cases are equipped with centrifugal or axial fans. When the evaporative condenser is working, the cooling water is pumped to the nozzles on the upper part of the condenser tube group, and sprayed evenly on the outer surface of the condenser tube, forming a thin water film. High-temperature refrigerant vapor enters from the upper part of the serpentine condenser tube group, and the liquid condensed by the cooling water outside the tube flows out from the lower part. After the water absorbs the heat of the refrigerant, part of it evaporates and turns into water vapor, and the rest drips into the lower water collecting pan, and the water supply pump is recycled. The
fan forces the air to sweep through the condenser tube group from bottom to top at a speed of 3-5m/s, which promotes the evaporation of the water film, strengthens the heat release outside the condenser tubes in display cases, and makes the water droplets after heat absorption in the process of falling The air is cooled so that the vapor formed by evaporation is discharged from the water barrier along with the air flow. The function of the water barrier is to block the unevaporated water droplets in the air stream and make them fall back to the water tray to reduce the consumption of cooling water. In addition, there is a float valve in the water pan. When the water level of the water pan is too low due to the constant evaporation and loss of water, the float valve will automatically open to supplement the cooling water. If the ventilator of the evaporative condenser is arranged on the side of the lower part of the condenser tube group, it is called pressure-feed evaporative condenser, and the motor will not get damp. If the fan is installed on the top and sucks in the air from the coil, it is called a suction evaporative condenser. Its advantage is that the display cases maintain negative pressure in the body, and the evaporation temperature of water is lower: the disadvantage is that high temperature and high humidity air must flow through the display. Cases Fans, so the motors of the fans are easily corroded and burnt due to moisture.
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