Shanghai Nuobing Freezing Machinery Co., Ltd
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Evaporative condensing screw industrial chiller unit
Evaporative condensing screw industrial chiller unit
Product details

Integrated design of evaporative condenser screw chiller unit, built-in cooling water pump, made of special metal material with super corrosion resistance, high thermal conductivity and superior hydrophilic performance, manufactured by laser welding technology. The plate tube evaporative condenser has a long service life15Years or more. Evaporative condensing screw chiller unit, which places the heat exchanger components of the water condenser in the cooling tower for direct heat dissipation, combines the two devices into one, eliminating the need for a cooling water pump for transmission from the condenser to the cooling tower. The circulating water volume is in the traditional way50~70%And the condensation temperature is lower than that of traditional cooling methods3~11℃, thus saving energy consumption25~40%Greatly reducing equipment volume, the overall prefabricated structure makes installation and maintenance very convenient, and can also be installed in basements, effectively eliminating noise pollution and beautifying the appearance of buildings.

1energy conservationDue to the fact that the condensation temperature of the evaporative condenser varies with the wet bulb temperature, the wet bulb temperature is generally lower than the dry bulb temperature68℃, which means that under the same environment, using an evaporative condenser can lower the condensation temperature of the condensation system68Compared with water-cooled condensers with cooling towers, the system and compressor can save energy because it directly releases heat to the ambient air at once20%above.

2Low operating costs and long lifespanLow maintenance costs. All components of the evaporative condenser are made of hot-dip galvanized stainless steel or galvanized steel pipes, which have a long operating time and low maintenance costs.

3water conservationWater cooled condenser1KgCooling water can take away4.66.9wThe heat, and1kgWater can evaporate under normal pressure and be carried away676wHeat, therefore the theoretical water consumption of evaporative condenser is only the same as that of general water-cooled condenser1%In fact, due to blowing losses, sewage and water exchange, the water consumption is the same as that of a typical water-cooled condenser5%10%Therefore, it is particularly suitable for water scarce areas.

Evaporative condenser utilizes the spray water outside the coil to partially evaporate and absorb the water inside the coil

Evaporative Condenser

The heat of the high-temperature gaseous refrigerant gradually cools the refrigerant inside the tube from a gaseous state to a liquid state.

Evaporative condenser is composed of cooling pipe group, packing, sprinkler, axial flow fan, water collection tank, water pump, water collector, box and other components.

Operating principle of evaporative condenser

The spray water is transported by a water pump from the collection tank to the spray pipe at the top of the evaporative condenser, and sprayed onto the outer surface of the condenser discharge pipe through a nozzle to form a thin water film. Some of the water in the water film absorbs heat and evaporates into steam, while the rest falls into the collection tank and is circulated by the water supply pump.

Axial flow fans force air to be drawn in from the top and bottom of the side walls through the coil, while the packing and saturated hot and humid air are discharged into the surrounding atmosphere. Some of the water droplets carried in the hot and humid air are intercepted by a water collector, effectively controlling the dispersion loss of water droplets. The water vapor in the atmosphere caused by dispersion is replenished with cooling water in the system controlled by a float valve.

Product features of evaporative condenser

  1The condensing coil adopts ultra long specially designed steel pipes, which pass through the water2.5MPaStrict pressure test, overall close to430High temperature hot-dip galvanizing at ℃.

  2The box body is made of imported or domestically produced high-quality galvanized sheet metal, and electrostatic spraying technology can be used. The water collection tank can be made of stainless steel plate.

  3The fan is selected as a dedicated high-efficiency, low-noise axial flow fan, which has a high range and prevents hot air from flowing back.

  4The water pump is designed for outdoor use with low power, high flow, and low head, and can be equipped with a descaling device according to customer requirements.

  5High flow, anti clogging nozzles are used for water distribution, efficient water collectors, and cooling fillers, with precise calculation of continuous and uniform coverage to prevent water film "dry spots" on the pipe wall. High qualityPVCIt is made of material, anti-aging, wind resistance, small groove shaped water absorber, so that the floating rate of water can be controlled within0.001%Below, the cooling filler is a honeycomb cross flow structure, suitable for circulating water cooling

  6The low flow cooling circulating water evaporates in the condenser coil, and the ammonia gas condenses into liquid in the condenser coil, hence it is called an evaporative condenser. High intensity evaporation makes evaporative condensers more prone to scaling than other types of condensers, and there is currently no ideal method for scaling. A severely scaled evaporative condenser loses its energy-saving advantage. High quality cooling water is suitable, and selection should be cautious!.

Technical characteristics of evaporative condenser

1Adopting the design of induced draft counterflow and one-time heat exchange, the heat transfer relies entirely on the surface of the coil group. Air enters from around the lower part of the evaporative condenser at low speed and is discharged from the upper part of the evaporative condenser at high speed, minimizing the reflux of hot and humid saturated air.

2The advanced large water spray device can spray water to the maximum extent possible to accommodate the pipe wall, improve the heat transfer coefficient. The device has an advanced structure and no blockage, reducing surface scaling and improving equipment efficiency.

3Evaporative condensing screw chiller unitThe box is made of imported or domestically produced materialsST102High quality super galvanized sheet, optional electrostatic spraying process, water collection tank can be selected304Stainless steel plate.
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