Compound Flow Closed Cell Cooling Tower Closed Circuit Cooling System

Compound Flow Closed Cooling Tower

Adopt cross-flow cooling method, the drift rate is very low. The internal space is large and maintenance is very convenient. The fully closed circulation can avoid blockage caused by debris. The heat exchanger adopts the building block stacking method, which can be installed and disassembled layer by layer. No water tank is required, the area is small, and it is easy to relocate. Automatic digital display temperature control, energy saving and environmental protection. Simple operation and low maintenance cost

Structural features

Efficient Spray Water Circulation System

The newly developed ABS special nozzle has the advantages of large spraying water volume, uniform water distribution, and no clogging. The reasonable water distribution pipeline spraying height and nozzle arrangement can form a uniform water film on the outer wall of the coil and avoid wall flow. The spray water circulation system is specially equipped with anti-scaling device to slow down corrosion and increase heat exchange effect. The outdoor circulation water pump is used to reduce energy consumption and maintenance.

High Efficiency And Low Noise Fan

The fan with wide blade, large chord length and space twisted aluminum alloy cooling tower, which won the National Invention Award, has high efficiency, low vibration, low noise and low energy consumption. The fan and motor are directly connected, without deceleration, easy to maintain, and the motor is an outdoor high temperature resistant enclosed motor.

 

Solid And Corrosion-resistant Tower

In order to ensure that the closed cooling tower can maintain normal operation in extremely harsh environments, the tower body structural parts and water collection bottom plate are all made of folded stainless steel plates, the tower body panels and fan ducts are made of anti-corrosion fiberglass

components, and all connecting parts in the closed cooling tower are made of stainless steel.

Efficient Water Collector

The three-dimensional water collector made of FRP material has low air resistance and high water collection efficiency, which is more than 99.99% of the circulating water volume. In order to facilitate the internal maintenance of the cooling tower, the water collector is designed to be detachable.
 

	Fan The ventilation system uses aluminum alloy axial flow fans specially designed for cooling towers, with forward-leaning blade structure design and streamlined inlet duct, which features low wind resistance, large air volume, low noise and high efficiency. The non-belt drive structure reduces the number of transmission parts, and uses a fully enclosed self-cooling low-noise cooling tower special motor, which has the advantages of small size, light weight, good starting performance, reliable operation and durability.
	Filler The specially designed PVC honeycomb cross flow and the shortcut cross air inlet structure enable the air to quickly take away the heat in the water. The special filler flow channel enables the water flow to form a large area of ​​flowing water film on the filler surface, prolonging the cooling time of the water in the filler and improving the water cooling effect. It has the advantages of small wind resistance coefficient, anti-aging, and not easy to deform.
	Sprinkler System The water pump used is a special pump for closed cooling tower, which has large flow, low head, high efficiency, low noise and low power. The water pump used is a special pump for evaporative condenser, and the implementation standard is JIS-C4210. The water pump motor voltage is 380V, the protection level is IP55, and the insulation level is F.
	Circulatory System The circulating water pump adopts a special pipeline pump for closed cooling tower, which has stable performance and low noise, motor protection level IP55, insulation level F. The circulating water tank adopts SUS304 stainless steel plate, which is stamped and formed, with beautiful appearance and strong pressure resistance.

Working principle

The evaporative condenser is the main heat exchange equipment in the refrigeration system. Its working principle is: the superheated high-pressure refrigerant gas discharged by the compressor in the refrigeration system passes through the condensation pipe in the evaporative condenser, so that the high-temperature gaseous refrigerant exchanges heat with the spray water and air outside the pipe. That is, the gaseous refrigerant enters the pipe from the top and is gradually condensed into liquid refrigerant from top to bottom. The super strong wind force of the matching induced draft fan makes the spray water completely and evenly cover the surface of the coil. The water greatly improves the heat exchange effect by taking advantage of the wind. The spray water with increased temperature is partially changed into gaseous state, and a large amount of heat is taken away by the wind by the latent heat of vaporization of water. The water droplets in the hot air are intercepted by the high-efficiency dehydrator and scattered into the heat exchange layer of the PVC water spray sheet with the rest of the water that has absorbed heat. It is cooled by the air flowing through, the temperature is reduced, and it enters the water tank, and then continues to circulate through the circulating water pump. The water evaporated into the air is automatically replenished by the water level regulator.

Heat exchange tubes come in many forms. Commonly used ones include carbon steel hot-dip galvanized tubes (also divided into round tubes and oval tubes), aluminum alloy tubes, and stainless steel tubes (also divided into 314/316 round tubes and corrugated tubes); among them, carbon steel hot-dip galvanized tubes (also divided into round tubes and oval tubes) The zinc-dipped evaporative condenser is the earliest product to be used and accounts for most domestic users. It is mainly used for high-pressure gas condensation and cooling. The applicable pressure range is 0-30MPa; the aluminum alloy evaporative condenser is a new energy-saving new generation. The product is suitable for condensation of ice machine refrigerants, and the applicable pressure range is 0-5MPa; stainless steel tube evaporative condensers are mainly used in the corrosive gas cooling and condensation processes of some chemical plants.

The shell of the refrigeration evaporative condenser is generally made of galvanized sheet sprayed with plastic. This sheet has the characteristics of stainless steel, is rust-proof, has a good appearance and is easy to process.

Operating principle

The spray water is transported from the water collection tank to the spray pipe on the top of the evaporative condenser by a water pump, and sprayed onto the outer surface of the condensation pipe through the nozzle to form a very thin water film. Part of the water in the water film absorbs heat and evaporates into water vapor, and the rest falls into the water collection tank for circulation by the water pump.

The axial flow fan forces air to be sucked in from the top and the lower part of the side wall to flow through the coil, and the filler and saturated hot and humid air are discharged into the surrounding atmosphere. Some water droplets entrained in the hot and humid air are intercepted by the water collector, which effectively controls the loss of water droplets. The water vapor lost in the atmosphere is controlled by the float valve to supplement cooling water in the system.