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MACH
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Product Description
Cross-flow closed cooling tower, efficient heat dissipation, energy saving and environmental protection. Adopt cross-flow design to optimize heat exchange efficiency; Closed circulation system, anti-corrosion, maintenance-free. Intelligently control the fan and water pump, and adjust the energy-saving and electricity-saving as needed. Low noise operation, adapting to the needs of many industries, stable and reliable.
Mach cooling can provide customers with a variety of cooling equipment and processes, which mainly include closed-circuit cooling towers, open cooling towers, air coolers, and industrial water tanks. At the same time, it produces and operates various specifications of cooling tower packing, cooling tower fans, cooling tower motors, reducers, and other fiberglass cooling tower accessories. It also undertakes cooling tower renovation and maintenance services. The company's products can be widely applied in areas such as high-speed railways, precision air conditioning, metallurgy and forging, oil and power, chemical and pharmaceutical industries, and heat treatment.
A closed-circuit crossflow cooling tower utilizes a water pump to transport high-temperature cooling water into the cooling coil, where the circulating water exchanges heat with the air inside the tower. Through a pressure-swirl nozzle system, the water is transformed into high-speed fine droplets, increasing the surface area and extending the heat exchange duration. Heat is transferred from the coil to the air, and a saturated moist steam is formed by the water film and air. This heat is then expelled into the atmosphere by the fan. Some water droplets are captured by the drift eliminator, thereby reducing water loss. |  |
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The coil is made of stainless steel, offering strong corrosion resistance for acid-base environments; freeze and pressure resistance to reduce winter pipe burst risks; dense surface to prevent scaling and extend lifespan; high heat dissipation efficiency with low maintenance costs. It can be upgraded to red copper tube material. |
Low-speed aluminum alloy fan paired with a gear reducer, ensuring smooth operation and noise levels below 60 dB(A). The motor is available in explosion-proof or energy-efficient models, supporting multi-speed adjustment with energy savings up to 50%. Motor upgrades to Siemens or WEG motors are compatible. |  |
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This high-efficiency pump complies with the JIS-C410 standard, featuring large flow rate, low head, anti-clogging design, high efficiency, minimal energy loss, and extremely low power consumption. Its compact structure, small size, and aesthetically pleasing design ensure easy installation, stable operation, and low noise. With high component concentricity, leak-proof performance, and simplified maintenance, the pump offers both reliability and user-friendly functionality. |
Circulating Water Pump / Control Cabinet System / Water Tank / Stainless Steel Housing and Frame / Fasteners (304/316L) / Dual-speed Motors and Variable Frequency Motor Anti-freeze Heaters |  |
| Model | Water flow m³/h | Fan power kw | Airflow rate m³/h | Spray pump | Intak export | Weight（KG） | Size mm (L*W*H) | ||||
| Power kw | Water m³/h | Dry | Operating | ||||||||
| AHC-30 | 30 | 1.1(2) | 38000 | 0.75 | 45 | DN80 | 1200 | 3000 | 2600*1940*2200 | ||
| AHC-50 | 50 | 1.1(3) | 57000 | 1.1 | 60 | DN100 | 1580 | 3780 | 3000*1940*2580 | ||
| AHC-80 | 80 | 1.5(4) | 91000 | 2.2 | 85 | DN125 | 2050 | 4920 | 3800*2240*2880 | ||
| AHC-100 | 100 | 1.5(4) | 102000 | 3 | 114 | DN125 | 2150 | 5100 | 3800*2240*2880 | ||
| AHC-125 | 125 | 2.2(4) | 130000 | 3 | 140 | DN100*2 | 2800 | 6800 | 5000*2240*2910 | ||
| AHC-150 | 150 | 2.2(4) | 150000 | 4 | 140 | DN100*2 | 3200 | 7820 | 5000*2240*2910 | ||
| AHC-175 | 175 | 2.2(4) | 150000 | 2.2*2 | 140 | DN100*2 | 3300 | 8000 | 5000*2240*2910 | ||
| AHC-200 | 200 | 4.0(4) | 240000 | 3*2 | 160 | DN125*2 | 5000 | 9000 | 5360*2600*3660 | ||
| AHC-225 | 225 | 4.0(4) | 240000 | 3*2 | 160 | DN125*2 | 5500 | 10000 | 5360*2600*3660 | ||
| AHC-250 | 250 | 5.5(4) | 260000 | 3*2 | 160 | DN150*2 | 6500 | 11500 | 5940*2900*3860 | ||
| AHC-300 | 300 | 5.5(4) | 260000 | 4*2 | 160 | DN150*2 | 7000 | 12000 | 5940*2900*3860 | ||
Cross-flow closed cooling towers are widely used, mainly including the following aspects: Power industry, chemical industry, steel industry, data center, pharmaceutical industry, food and beverage industry.
Regularly clean the dust, oil stains, and other debris on the outer shell, and also remove the scale on the heat exchange coil. Regularly clean the spray filter. The scaling material is the biggest influencing factor on the heat dissipation effect of the heat transfer coil.
Due to the good heat dissipation effect inside the heat exchange coil and long-term exposure to hot water circulation, it is relatively easy to scale. Therefore, soft water must be used for the internal water of the heat exchange coil. The outer layer of the cooler is sprayed with a spray pump, and the spray water is tap water. If it frequently comes into contact with hot copper pipes, scaling will definitely occur, and it should be regularly cleaned.
① The inlet pipe must be highly sealed;
② The imported pipeline must be filled with liquid, and the pump is prohibited from running for a long time in a cavitation state;
③ Regularly check the current of the motor and ensure that it does not exceed the rated current of the motor;
④ The pump should be supervised by a dedicated person during operation to prevent accidents;
⑤ It is strictly prohibited to arbitrarily turn off the cooling water supply during high temperature operation;
⑥ After long-term operation of the pump, if the noise and vibration of the unit increase due to mechanical wear, it should be stopped for inspection. If necessary, vulnerable parts and bearings can be replaced. The maintenance period of the unit is one year.
① Mechanical seal lubrication should be clean and free of solid particles;
② Mechanical seals are strictly prohibited from working under dry friction conditions
③ Before starting, the pump (motor) should be turned a few times to avoid damaging the seal when suddenly started.
In a crossflow closed circuit cooling tower, the process fluid (e.g., water, oil, or other liquids) flows inside the coils. The outer surface of the coils is covered by spray water. Heat from the fluid is transferred through the coil walls, creating saturated warm vapor with water and air. The heat is expelled into the atmosphere by fans, while water is retained in the collection trough for recirculation and spraying.
The merits of a crossflow closed circuit cooling tower include its ability to suppress scale formation on the outer coil surface, making it highly suitable for cooling fluids with high temperatures or significant cooling temperature differences. Its large central space facilitates convenient maintenance and personnel access for inspection. Additionally, it operates with low noise levels, making it ideal for applications like residential central air conditioning where noise control is critical.
In a crossflow closed circuit cooling tower, air flows horizontally through the falling cooling water. In contrast, a counterflow closed circuit cooling tower features air moving in the opposite direction to the falling water. Crossflow cooling towers may require less total area in certain applications and are easier to maintain. On the other hand, counterflow cooling towers have a compact structure and occupy less space.
Crossflow closed circuit cooling towers are suitable for cooling fluids with high temperatures or significant cooling temperature differences. They can also be applied in projects where multiple units are arranged in parallel to accommodate various water flow rates.
When using a crossflow closed circuit cooling tower, it is important to remove debris from around the air intake side or the bottom of the tower. Regularly check whether the V - belt of the reducer is properly adjusted and clean out any debris from the water basin and the interior of the tower.
The exterior material of a crossflow closed circuit cooling tower is typically made of metal stainless steel sheets or galvalume sheets.
Crossflow closed circuit cooling towers feature single - side air intake with a horizontal airflow direction. The cooling and heat dissipation materials in the air intake design consist of a condenser and packing. The upper part is designed with a condenser, while the lower part contains the packing. On the top of the other side, multiple small - size fans are installed, and an additional layer of water eliminator is also incorporated.
