Dry Coolers anD ConDensers for InDustrIal applICatIons

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Contents LU-VE Group Application fields Product configuration Application examples

The LU-VE name has become the international reference point for all that is best in the design, production and sales of heat exchangers and other components for equipment used in commercial and industrial refrigeration, air conditioning, industrial applications and close control air conditioning. The LU-VE Group of today, with its headquarters in Uboldo (Varese), Italy, has been made possible thanks to a continuous process of cultural and technological innovation starting in 1928 and still continuing strongly now. The strength of the Group lies in its 8 production facilities • 1,350 highly skilled...

LU-VE SpA LU-VE S.p.A - Uboldo (Va), Italy LU-VE s.p.a. is the holding company of lu-Ve Group. In 1985 LU-VE s.p.a. acquired Contardo s.p.a., established in 1928. production began in 1986. LU-VE quickly made its mark thanks to high standards of quality, new solutions designed in its own laboratories and to the care taken with the appearance of its products. (Beautiful outside - revolutionary inside). It has been the first company in the world to apply avant-garde solutions to commercial and industrial refrigeration: • grooved tube technology • specialized heat exchange surfaces • certified performance...

Dry Coolers anD ConDensers for InDustrIal applICatIons

the new eaV/eal poWer range of horizontal units and the new EHLD/EHVD/XXLD POWER series with “V” formation coils have been specifically designed to fulfil the typical requirements of industrial installations, with particular reference to these applications: • Electricity generation (gas turbines, gas or diesel reciprocating engines, ORC systems, cogeneration, geothermal plants) • Oil and gas industry • Cooling of water used in industrial processes • Automotive industry • Waste treatment plants • Chemical and pharmaceutical industries • Die-cooling in the production of plastics the lu-Ve Group...

Product configuration heat exchanger LU-VE has always led the field in the creation of very high efficiency heat exchangers. this has been made possible by the use of sophisticated methods of numerical simulation (CfD), capable of predicting with precision the fields of pressure, temperature and velocity which are generated within the heat exchanger, thus optimizing the heat transfer coefficient and minimizing pressure drop. In addition to numerical analysis, research activities are conducted in the experimental laboratories of lu-Ve, which are equipped with: • 3 climatic test chambers to measure...

Construction materials The product has copper tubes and aluminium fins. The tubes are mechanically expanded to guarantee the best contact between tube and fin. the headers of the dry cooler version are made of copper with an aluminium floating flange attachment. the headers of the condenser version are made of copper or carbon steel depending on the application. the casing of the heat exchanger is made of galvanized steel (to unI 5961 standard), polyester-powder coated, colour ral9003. Corrosion resistance in compliance with EN ISO 12944, classification “C4”. Different materials for the heat...

Fan Axial fans are fitted, lubricated for life and balanced both statically and dynamically. Balance grade G6.3 (to Iso 1940 part 1). the protective fan grilles conform to the en 294 standard. Fan diameters 800 - 910 - 1,000 mm fan-motors with external aluminium or composite material rotors. In this configuration the fan-motor is a single piece and has several advantages: compact design, excellent aerolic and electrical efficiency, lightness, and it is easy to replace. Insulation class f, protection grade Ip 54. on request, fan-motors can be painted and the windings double-impregnated for use...

Fan diameters 1,250 mm or more fan-motors with traditional internal rotors, directly coupled to the fan, generally constructed in ppG, paG, al. Insulation class f or H, protection grade Ip 55. the motors can be supplied with different grades of mechanical and electrical protection depending on the intended type of use. these motors can be regulated by inverter. In this configuration, the fan group can be best suited to the needs of the plant, permitting high levels of air quantity to be achieved and thus maximizing heat exchange capacity at equal dimensions.

accessories the machines can be equipped with various accessories to facilitate installation and maintenance, such as: External connecting headers between the various connections of the heat exchanger

Inspection panels and hinged fan shrouds to facilitate maintenance and cleaning of the heat exchanger If the machine is required to operate with pure water and it is essential to guarantee complete drainage of the heat exchanger, a special version is available with extra drainage header.

Control and regulation systems the machines can be supplied with different electrical configurations for the various plant requirements, both at the level of electrical panels and also for speed controllers capable of modulating the capacity of the heat exchanger depending on conditions in order to save energy. Some examples of electrical panels a wide range of regulation systems, inverters, cut-phase controllers, transformer controllers can be supplied in order to best regulate the operation of the machine.

Benefits of electronic regulation regulating the capacity of dry coolers is often done by starting and stopping the fans in sequence. Instead, the use of an electronic controller provides great energy savings thanks to the continuous modulation of all the fans. Electronic regulation (sample) full load (∆t = 15K) 576 kW Consumption 8.32 kw sound power level 85 dB(a) ON/OFF regulation of the fans Fan speed controller (transformer) Partial load 1/2 capacity

lu-Ve proposes eC brushless fan technology. this guarantees even greater energy savings, thanks to the superior efficiency of the motor. Motor efficiency [%] Main advantages • Maximum reduction of electrical power draw (-20% on average) • Maximum noise reduction during the regulation process • self-protected motor • Integrated speed control