Refroidisseur de fluide Marley LW
Refroidisseur de fluide par évaporation
Détails du produit:
Induced Draft Counterflow Fill/Coil Hybrid Fluid Cooler
Disponibilité: Mondial
Capacité thermique : 26 – 107 tons (114 – 470 kW) per cell
Plage de débit : 20 – 1200 gpm (5 – 273 m3/hr) per cell
Direct drive fans (standard) eliminate belt drive maintenance
Installation monobloc, faible hauteur
Avantages de la maintenance et de l’accès
Certifié CTI
Conforme à la norme ASHRAE 90.1
Conforme à l'OSHA
Le Refroidisseur de fluide Marley LW is an induced-draft counterflow closed-circuit fluid cooler utilizing patented heat transfer technology. The LW’s lower height et compact build avec factory-installed controls address many municipal code height restrictions.
By moving key assembly steps typically performed onsite to the manufacturing floor, the LW also offers significant installation and maintenance advantages that effectively address shrinking skilled labor pools and limited budgets.
Applications
The Marley LW is well-suited for HVAC applications, including water-source heat pumps for commercial buildings and multi-unit residential high-rises, water-cooled variable refrigerant flow (VRF) and skid-mounted systems. It is also an excellent fit for industrial applications such as compressor, machine jacket and process fluid cooling. The Marley LW Fluid Cooler is a viable option for specifications calling out heat rejection duties less than 200 tons, counterflow closed-circuit cooling towers, outdoor forced-draft fluid cooler replacement, lower height or weight requirements or redundancy restrictions.
Avantages de l'installation
With standard unit heights less than 10.5 feet, the Marley LW Fluid Cooler meets many municipal code height limitations and offers advantages for rooftop installations where low visibility is important. Other benefits include single-piece installation, single-point power connection, factory-installed controls, and factory wiring and testing.
Maintenance Advantages
With 6-10 large rectangular access doors per cell strategically located to allow easy inspection and maintenance of interior components including spray, coil and fill compartments, the LW takes ease of access to another level. The access doors provide air tight and watertight seals without the use of gaskets or fasteners.
Patented Heat Transfer Technology
The Marley LW uses specially designed heat transfer coils in conjunction with PVC film fill media to significantly enhance evaporative heat transfer. The unique design of the coil drastically reduces its resistance to airflow, lowering fan power requirements and increasing the capacity for heat rejection in a given unit size by allowing more air to move through the high-efficiency fill media.
Ventilateurs à entraînement direct
Les ventilateurs à entraînement direct éliminent l'entretien de routine généralement requis pour les équipements entraînés par courroie, y compris la tension périodique de la courroie et le regraissage des roulements. Les ventilateurs sont câblés en usine au panneau de commande de l'unité, qui est testé en usine et expédié monté sur l'unité pour une mise en service facile sur site.
- Ventilateurs à entraînement direct ECM
Standard fan drives incorporate high-efficiency electronically commutated motors (ECM) with integral speed
control. ECM fan drives provide efficient operation at exceptionally low sound levels. - Ventilateurs à entraînement direct avec moteur à courant alternatif (modèles LWA)
An optional drive system using NEMA premium efficiency fan motors is available, designed for use with external variable speed drives (VFDs). Models with AC motors (LWA models) deliver the same unit performance as models with ECM drives, with slightly higher sound levels as a tradeoff for improved availability in a world of electronics supply vulnerabilities.
Serpentin d'échange de chaleur en cuivre
Copper heat transfer coils offer corrosion resistance and greater thermal efficiency, which contribute to the LW Fluid Cooler’s compact equipment size, lower weight and long service life. Copper coils are 30-40 percent lighter than comparable galvanized steel coils. The copper coils require less process fluid volume and are bacteriostatic and recyclable. Multiple coil configurations are available to balance heat transfer capability, fluid pressure drop and equipment.
Système de distribution d'eau résistant au colmatage
Les buses de pulvérisation à grand orifice de 1-7/8" aident à prévenir l'accumulation de débris et le colmatage.
Portes d'accès multiples
6-10 gasketless doors per cell are removable without tools and allow easy access to interior components including spray, coil and fill compartments.
Construction robuste
The LW Fluid Cooler includes a bolted stainless steel collection basin as standard. All collection basin and air inlet parts exposed to circulating water, including coil supports, attaching hardware and optional basin components, are heavy-gauge series 300 stainless steel. The balance of the tower structure and mechanical supports are fabricated from heavy-mill galvanized steel.
Persiennes d'entrée d'air en PVC
PVC air inlet louvers limit splash out and also offer easy access to the collection basin from all sides.
Éliminateurs de dérive en PVC
Les éliminateurs de PVC à triple passage à haute efficacité limitent les pertes par dérive et sont facilement retirés pour inspection.
2. Recirculating water is pumped from the collection basin to the pressurized distribution system and is distributed over the coils.
3. Recirculating water flows over the outside of the coil tubes, removes heat from the process fluid and flows onto the fill media below the coils.
4. L'air induit à travers le refroidisseur de fluide évapore une petite partie de l'eau en recirculation, rejetant la chaleur dans l'atmosphère.
