Process air cooler series DV With cooling circuit in air or water-cooled version Customized refrigeration technology Made in Germany
2 Lahntechnik your system partner for customized refrigeration technology For more than 50 years now we have been planning, developing and manufacturing individually customized as well as standard refrigeration units. We aim to be a development partner to our customers and we are committed to the continuous improvement of our performance, efficiency and competitiveness. In order to maximize value each technical solution is based on in-depth analysis of individual requirements resulting from a thorough consulting process. Our expertise in tailormade solutions depends to a great extent on customer input in the development process. We focus on providing comprehensive engineering services so that we can respond competently to customer requirements and guarantee fast and individually designed solutions. Process air cooler with cooling circuit SERIES DV Our refrigeration know-how is supplemented by in-house construction services, sheet metalworking and paint shop facilities which enable the fast and seamless development and production of highly customer-specific solutions. We implement stringent quality controls as standard. Our process quality has been certified as compliant with the DIN ISO 9001 standard for many years now. This high standard of quality is also documented by our status as supplier of refrigeration technology to many German automobile manufacturers. This is how to cool your process air Process air coolers of the series DV are used wherever air / ventilation systems need constant temperature control. Series DV features: n Compact modular construction n Individual design n Needs-orientated cool-down characteristics n High reliability Specifications, cooler configurations DV coolers are designed to easily fit technically and geometrically to special applications such as constructional conditions or customer-specific performance parameters.
3 Water condensate resulting in the cooling process is drained by means of an open outlet. Installation of a droplet separator depends on technical conditions. An electronic temperature controller regulates the air temperature and ensures power adjustment to the cooling system. Variable temperature control Here there is a choice between two versions of highly-precise temperature control: fixed value temperature control for a constant inlet temperature or difference value temperature control with reference-driven inlet temperature. Temperature deviations are signalized via parameterizable alarm output. Set / actual temperatures are visualized at the switchgear cabinet. The commissioning of the process air cooler on-site is limited to the determination of the set value of the cold air temperature. The set value can be changed by the customer. DV unit in water-cooled versions with optional evaporator housings The required size and power of the unit result from maximum ambient temperature, air volumes, inlet/outlet temperature and humidity. DV coolers adapt the cooling power to the different operating conditions in a range from 0 to 100 % via hot-gas bypass or multi-compressor systems. A flange plate which is screwed onto the evaporator slide-in opening of the customer-sided air duct enables simple connection to the process air system. You can choose the watercooled or air-cooled version for condensing the refrigerant. Individual design, construction in modular design Every DV unit is fully wired including the switchgear cabinet. Additional interfaces are available at the request of customers. The modular construction allows adaptation to different installation situations. This means that we are in a position to provide quick and individual solutions for all customer demands of course in all normally-used voltages and mains frequencies as well as in accordance with electrical standards. industry sectors and applications Process air coolers from the series DV are suitable for a wide range of industry sectors and applications. Here are just a few examples: n Air-conditioning DV coolers are optionally available with evaporator housings. Our evaporators from the DV series are made of copper pipes with aluminium fins. As an option heat exchangers are available in stainless steel as V2A or V4A. n Feeding of cool-zones for workpieces in the metal-working industry n Manufacturing processes for syrups and chocolate in the foodstuffs industry n Nitrogen-cooling for emptying tanks in the petrochemical industry
4 Tailor-made cooling technology for trade and industry Options at a glance n Finned evaporators in V2A/Alu epoxy or V4A/Alu epoxy n Special voltages and standards UL, CSA n Control accuracy ±0.5 K n Reference temperature control n Outdoor installation n Evaporator housing n Housings with individual paint or in stainless steel n Fans with rpm-control n ASI- / Profi-bus interfaces n PLC control n Rpm-controlled compressor for energy-efficient power adaptation n Flexibly installable switchgear cabinet n External condenser / external condensing unit Compact DV units in air-cooled design with evaporator housing and radial fan Example of refrigeration system for a DV unit DV coolers have to undergo extensive function and performance tests and are tested to their limits in order to guarantee the performance described. Quality and service as a principle Our production and our products comply with the requirements of DIN ISO 9001 and DIN EN 378, the F-Gas Regulation, the EU Machinery Directive as well as the valid German VDE and UVV Regulations, consequently the coolers comply with the required high quality standards. Our professional service covers consulting, project planning, commissioning, maintenance and on-site service as well as delivery of spare parts including a 24-hour hotline.
5 Cooling systems for your special demands Process air cooler series DV Product features n Finned evaporator in copper / aluminium n High power condenser with axial fan for air-cooled versions n Stainless steel plated heat-exchanger with cooling water regulator for water-cooled versions n Full or semi-hermetic condenser, 100 % suction gas-cooled n Thermostatic or electronic expansion valves n Electronic temperature controller n Automatic power regulation n Control accuracy ±1 K n Condensation pressure control n Turn-key wired switchgear cabinet in industrial standard version n Signal exchange via Harting connector for external enables, operational and fault messages DV unit in water-cooled version for inserting into air ducting system Advantages at a glance n Planning, design, optimization and production all under one roof n Electronic integration in central control system n Introduction and training for owner / operator n Use of high quality standard components enables rapid sourcing of spare parts n 24-hour hotline and service network n 5-year warranty with maintenance contract Warm air Cool air Installation of cooling series DV in existing air-ducting
Customized refrigeration technology Made in Germany Köln Autobahn triangle Dernbach A48 Montabaur Lahn Giessen Bad Hersfeld Koblenz A3 Mönchengladbach Trier Nassau Limburg A5 Mosel B260 Rhein Wiesbaden A66 Frankfurt A61 Mainz LAHNTECHNIK GmbH duotemp Kältetechnik GmbH Taunusstraße 10 56377 Nassau/Lahn Germany Phone: +49 2604 9555-0 Fax: +49 2604 9555-150 E-mail: info@lahntechnik.de www.lahntechnik.de DV E 11-2013 A63 Darmstadt Mannheim