Dry cooling towers - Import export

Dry coolers are simple and reliable equipment. Their operating principle is based on a sensible heat exchange between air and water where: air is drawn in by fans through a finned coil, while water (or a mixture of water and glycol) flows through the tubes that make up the coil and cools when the (cooler) ambient air laps the surface of the latter. Fins are used to increase the overall heat exchange surface area so that the equipment can be as compact and efficient as possible.

Drycoolers are simple and reliable equipment. Their principle of operation is based on a sensible heat exchange between air and water where: air is drawn in by fans through a finned coil, while water (or a mixture of water and glycol) flows through the tubes that make up the coil and cools when ambient air (colder cooler) laps the surface of the latter. Exchange coils, with a "V" arrangement within the cooler, consisting of copper tubes and aluminum fins. The angle between the coils, the diameter of the tubes, and the thickness and length of the fins, are sized to ensure the best heat exchange performance, for a given fluid and air flow pressure drops.

Ideal for water saving maintaining a high efficiency. All operations are managed by PLC with the possibility of remote management in “Industry 4.0” mode. Suitable for both industrial and HVAC fields of application. The adiabatic cooler, sometimes called adiabatic dry cooler or dry cooler with adiabatic pre-coolers, is designed to work with both air and water, with particular attention to efficiency. The external air is used to cool the liquid during dry operation and it is pre-cooled only in hot periods with wetting cycles of about 15 seconds during adiabatic operation (“adiabatic pre-cooling”).

The PAD-V adiabatic system is the optimal solution for increasing the efficiency of air systems, with capacities from 75 to 1,100 kW. Dry operation during cold periods: ambient air is drawn in and conveyed to the heat exchange coils (where the fluid to be cooled passes through): no water in the circuit, as during standard dry cooler operations. Energy use is also optimized by electronically modulated fan speeds based on temperatures. Adiabatic operation during hotter periods: outside air passes through the humidifier pack to be pre-cooled, before being conveyed to the finned coils and performing its cooling function: efficiency is increased. This also makes it possible to work at lower ambient temperatures.

RAW/E liquid coolers (water, water/antifreeze) operate through a closed circuit, consisting of a finned coil crossed in countercurrent by ambient air. Due to the sizing of the coil, it is possible to achieve process fluid temperatures close to the temperature of the intake air. They are industrial chillers designed for fluids between 0°C up to 70°C, with external temperatures between -10°C and +50°C: cooling powers available as standard from 64 kWf up to 782 kWf, considering a 10°C difference between ambient air and supply water. “RAW” series chillers are environmentally friendly machines: the fluids used in the cooling process are simply water/antifreeze (fluid to be cooled) and ambient air (cooling fluid). In addition, the use of high quality materials allows the achievement of high efficiency values (ratio of kWf rendered in cooling to kW absorbed in power consumption).

The dehumidifiers are used when perishable goods are being stored that would otherwise be damaged by moist air.

Chiller which has a very wide use area and especially preferred for concrete cooling offers direct use in concrete plants as container and modular according to ISO 9001: 2008 Quality Management System. The advantage of fully automatic operation is that it reduces the water by 10 degrees and provides full-time use.

Complete cooling unit with a lot of evaporators, all NEW Air-cooled chiller Technical specs Cooling capacity: 749 kW Max. power consumption 410 kW Max. operating current 822a Max. fan power consumption 28,26 kW

High capacity liquid-cooled chillers with the cooling power from 140 kW to 2 MW are perfectly suitable for medium to large industrial or large commercial applications. These chillers can be integrated with a dual liquid system, where the condenser uses glycol mixture and the evaporator uses water for the refrigeration process. Due to the glycol-free ability, CS chillers are ideal for particularly sensitive equipment that requires refrigeration with clean, distilled water. CS chillers are assembled on a welded open frame, equipped with maximum 4 screw compressors and shell and tube heat exchangers. Usually stored in special technical rooms and connected to secondary devices such as cooling towers or dry coolers to reject the absorbed heat to an additional fluid loop. Refra manufactures modern devices using plug-and-play ideology, making the installation and use of the devices as easy as possible.

The cooling tower with plume abatement (also called hybrid or wet/dry) is an evaporative cooling tower combined with a dry heat exchanger, used to abate the cooling tower plume. This is the best available solution where local constraints are such that the presence of plume is not accepted in normal conditions (along motorways, airports, close to residential areas).Hamon has an unrivaled reference list in this field.Plume abatement can be offered with mechanical draft cooling tower (cells) as well as with fan assisted natural draft (circular hybrid).ADVANTAGES: no plume visibility. outstanding performance of an evaporative cooling tower. cost attractiveness. all types of heat exchange media. for cell CT :same flexibility as an induced draft cooling tower. all types of structure (wood – frp – concrete – steel)

The 2500 KW cooling tower is designed to provide high performance for a minimal unit size. The specially designed drift eliminators reduce drift to 0.002% of flow. When supplied with chilled water, the cooling tower can also be used as a bulk air cooler for applications requiring large air flow. Designed and assembled to Aggreko’s standards. Packaged into 20 ft. ISO container frame. Brentwood drift eliminators designed for forced draft. Fully enclosed and protected from direct sunlight. Fan unit driven by a variable speed drive. Controlled operation of condenser unit fans. Safe and reliable operation for rental applications. Ease of transportation, handing and protection. Reduces drift to a rate significantly lower than that required by law. Increases safety with respect to microbial growth. Regulates fan speed proportional to sump temperature. Maximises efficiency, minimises noise and prevents overcondensation when coupled with water-cooled chillers.

The PU series field-erected industrial cooling tower can serve very large plants: especially oil & gas, chemical and power generation. Available for all industrial water. Different materials are supplied according to project needs: concrete, steel, fiberglass and pultruded.

Some industries need to keep the chemical-physical characteristics of the process fluids unchanged: in these cases, MCC closed-circuit evaporative cooling tower joins the game. Possibility to work in free-cooling mode. MCC-EC version available with electronically controlled fans.

MCC-T closed circuit evaporative tower allows to keep process fluids unaltered even in large plants. Some examples of applications: oil & gas, food industries, large paper mills. Easy transport of modules over long distances with reduced costs.

Compact design and reduced dimensions: a range of evaporative cooling towers with centrifugal fans for special space configurations. MCT-EC version available with electronically controlled fans.

This is a series of large industrial cooling towers for power generation, steel and aluminium processing, cogeneration and other large production sites. Efficiency, high performance, reduced installation and transport costs are granted.

It is a cooling tower for industries of any type and for any water quality: very compact, self-supporting, light and long-lasting non-corrodible fiberglass structure.

An indirect dry cooling system is characterized by the use of a condenser and air-cooled heat exchangers.The cooling system consists of the following main components :condenser (surface or spray type),cooling water circulating pumps and recovery turbines, if applicable,heat exchanger deltas including louvers,natural draft cooling tower,piping and valves,water storage tanks and transfer pumps,electrical equipment,instrumentation and control,accessories such as cleaning system, nitrogen blanketing system,The warm water from the condenser is delivered to the natural draft cooling tower by the cooling water circulating pumps and an underground piping network. After the cooling in the heat exchangers, the cold water returns to the condenser.

Forced draft cooling towers are specially designed to handle zinc sulphate solutions or highly corrosive liquids. They are equipped with distribution in highly resistant material.EFFECTIVE DESIGN COMBINING performance easy access for easy maintenance - sprayers are accessible without scaffolding and removable minimization of drift losses: 0,001% and lower. SUITABLE FOR HIGHLY CORROSIVE LIQUID WITH 200gl/ sulphuric acid, Presence of fluorine, Crystallization of gypsum

The induced draft cooling tower generally offers the most effective and economical solution to most of cooling needs. Hamon has supplied numerous IDCT worldwide for all power and industry applications and all environmental conditions. The IDCT offers the following advantages:flexibility. cost effectiveness. air flow almost constant regardless ambient air temperature. adapted to any water flow .flexible operation by shutting some cells. adapted to high thermal performance .all types of structure – wood, FRP, concrete, steel. all types of heat exchange surfaces from splash grids to high performance film

Plume-abated fan assisted natural draft or circular hybrid cooling tower is the best technical solution for large heat loads and stringent plume abatement requirements.Seawater application. If overall height is limited. To keep countryside free from visible plume formations and shadow .For locations close to residential areas .To facilitate permission processes. ADVANTAGES VS CELL TYPE HYBRID COOLING TOWER: Compact arrangement/space saving. No recirculation and interference effects. No wash down (grounding) effects of plume. Use of natural draft. No corrosion due to humidity and salinity in the neighborhood. Visually an interesting architectural structure.

The fan assisted natural draft cooling tower (FAND) combines the advantages of the natural draft cooling tower and the mechanical draft cooling tower.It becomes the best available technology when :Locations with limited plot plan. Overall height is limited. Important heat load . ADVANTAGES VS. CELLS: Compact arrangement. Power saving due to natural draft. No recirculation. Always a good alignment considering wind directions. Cooling by natural draft in case of electricity shortage.ADVANTAGES VS. NATURAL DRAFT CT: Reduced height. Better cooling characteristics during the summer season. Higher flexibility

The natural draft cooling tower is the right choice for large power plants.It offers the following advantages :power saving (no power consumption to induce air flow- no fan).environmentally friendly.no mechanical noise (no fan).safety of operation.no recirculation as the plume is rejected at high level.limited plot area.limited maintenance.high longevity (generally more than plant life expectancy).Payback period between 8 and 16 years depending on several factors.Hamon offers both basin or water collecting devices. This last solution, developed by Hamon, is recommended for large cooling towers.It offers the following advantages :less pressure drop in the air inlet.reduction of pumping power.decrease of acoustic pressure in air inlet

in plastic contrution axial ventilators induced draft anothers models available

The RCDC ACC is designed with optimized key sections and equipment to guarantee a maximized efficiency. The steam flows from the turbine into a steam duct and several manifolds to reach the fin tube bundles. The RCDC ACC is designed in streets sitting on a steel leg system (under structure) raised to allow proper air intake into the forced draft modules of A-shape steelframes supporting the fin tube bundles. Once condensed the steam is collected by gravity into a condensate tank located underneath or in the close vicinity of the ACC. The efficiency of the steam condensation process is guaranteed using appropriate and reliable vacuum units. RCDC guarantee the complete system and undertake integral studies related to the ducts and manifolds, the steel leg system and the pipe work and other special studies as appropriate.