VNC 20 TRICKLE GRID

Product catalog summary

Overview
Hewitech has significantly advanced the market for cooling tower fills with its innovative trickle grid structure, offering a wide range of grid selections to optimize cooling performance while minimizing pressure drop and clogging. The company's products have been tested by the Cooling Tower Institute (CTI) and have shown superior performance compared to traditional cellular fills in natural draft cooling towers.

Product Features
The trickle grid NC/VC series is designed for high-performance water cooling, even with highly polluted water. Key features include:

Environmentally friendly polypropylene (PP) construction
Available in various structures
High temperature and chemical resistance
Mechanical assembly for high stability
Cleanable open grid structure
Flame retardant protection (ASTM E84 and DIN 4102/B2 or B1)
Handles suspended solids up to 1000 ppm
High mechanical resistance

Technical Specifications
The VNC 20 trickle grid combines diagonal and vertical grid shapes in one fill block, setting new standards for technical cooling demands. It is made from UV-resistant polypropylene (PP) or HDPE, with a maximum operating temperature of 75°C (higher on request). The grid has a void ratio of over 97% and can be customized with special flame retardants to meet specific fire norms.

Performance and Applications
The NC 20/VC 25 trickle fill is designed for water with normal to moderate pollution levels. Its open cross-diagonal/vertical grid structure prevents clogging and reduces pressure drop, enhancing overall cooling performance. The NC 20 is available in three weight classes: 25, 27, and 48 kg/m³. The splash water droplet structure provides a high effective surface for counter-flow cooling processes.

Technical Data Summary
For slightly to moderately polluted water, the NC and VC series offer effective surface areas of approximately 125 m²/m³, with varying TSS content capacities. The VC 25 and NB 25 models are suitable for heavily polluted water, with effective surface areas of approximately 100 m²/m³ and higher TSS content capacities.

Catalog excerpts

Trickle grid NC / VC series High-performance trickle ﬁlls for eﬃcient water cooling processes NEW High-Performance trickle ﬁlls improve cooling tower eﬃciency even with high polluted water. The special structural design grant low drop pressure and high cooling performance. Hewitech, inventor of trickle grid structure, strongly improved the market of cooling tower ﬁlls and oﬀers · Made of PP - environmentally friendly nowadays the largest range of grid selection to achieve · Available in diﬀerent structures maximum cooling performance with a low pressure · High temperature and chemical resistant drop loss combined with a minimum of clogging. · High stability due to mechanical assembly Performance results tested by CTI publications (Cooling · Cleanable open grid structure Tower Institute) reveals better cooling implementation · Flame retardant protection ASTM E84 and as cellular ﬁlls in natural draft cooling towers. The low drop pressure and the unique water-droplet design · Loading of suspended solids up to 1000 ppm generate proven eﬃciency of cooling performace. The · high mechanical resistance newest development VNC 20 trickle grid is a combined diagonal and vertical grid shape in one assembled ﬁll block, which sets leading standards to achieve requested technical cooling demands. Design Diversity · Sustainable Eﬃciency · Custom-

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hewilediINNOVATION IN PLASTIC NC 20/VC 25 trickle Fill designed for normal up to moderately polluted water qualities. The open cross-diagonal/vertical grid structure avoid fill clogging caused by water solids and result in a low drop pressure and improve the overall cooling performance significantly. Combination of high water loads, low water quality and a long lifespan has been targeted with this special grid structure. The NC 20 covers 3 weights classes: 25, 27 and 48 kg/m3. Technical information HDPE ■ Material: Polypropylene (PP) or (HDPE); UV resistant ■ resistant to dissolved various chemicals,...

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VNC 20 TRICKLE GRID

VNC 20 TRICKLE GRID

Catalog excerpts

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