EWK-DC

CENTRIFUGAL VENTILATION

CLOSED CIRCUIT

Low noise Close circuit cooling towers

Forced draft
Epoxi coated centrifugal fan
Fan driven by pulleys and belts
Very low noise emission levels, being able to minimize with silencers (DAC model)
Low height
Total vibration isolation
Compact FGRP polyester corrosion free casing
Modular design
Pre-assembled at the factory / Easy to install
Integrated frame support
HCS (High Conductivity System) coil, made of hot galvanized steel
Internal materials highly resistant to extreme temperatures
Low energy consumption
Standard Fill materials in Polypropylene with anti-legionella treatment (SANIPACKING®)

Technical Features

Model	*Dissipation kw	Empty Weight kg	Service Weight kg	Recirculation Pump kw	Fan Power kw	Long mm	Wide mm	High mm
WITH MUFFLERS
EWK-DC 225/3	99	1360*	2360*	0.75	7,5	3459	1612	2170
EWK-DC 225/4	128	1480*	2480*	0.75	7,5	3459	1612	2470
EWK-DC 225/5	165	1660*	2660*	0.75	7,5	3459	1612	2470
EWK-DC 324/3	180	1705*	3180*	1.5	11,0	3784	1896	2215
EWK-DC 324/4	203	1901*	3450*	1.5	11,0	3784	1896	2535
EWK-DC 324/5	230	2145*	3780*	1.5	11,0	3784	1896	2535
EWK-DC 450/3	218	2040*	3920*	2.2	15,0	4395	2209	2265
EWK-DC 450/4	301	2275*	4185*	2.2	15,0	4395	2209	2565
EWK-DC 450/5	383	2585*	4465*	2.2	15,0	4395	2209	2565
EWK-DC 680/3	383	3280*	6200*	4.0	18,5	5431	2369	2600
EWK-DC 680/4	410	3600*	6500*	4.0	18,5	5431	2369	2870
EWK-DC 680/5	450	3960*	6900*	4.0	18,5	5431	2369	2870
EWK-DC 900/3	492	3880*	7200*	4.0	22,0	6762	2092	2600
EWK-DC 900/4	555	4200*	7600*	4.0	22,0	6762	2092	2870
EWK-DC 900/5	559	4560*	8010*	4.0	22,0	6762	2092	2870
WITHOUT MUFFLERS
EWK-DAC 225/3	99	1710*	2710*	0.75	11,0	4459	1612	3165
EWK-DAC 225/4	128	1830*	2830*	0.75	11,0	4459	1612	3165
EWK-DAC 225/5	165	2010*	3010*	0.75	11,0	4459	1612	3165
EWK-DAC 324/3	180	2355*	3855*	1.5	15,0	4784	1896	3230
EWK-DAC 324/4	203	2551*	4051*	1.5	15,0	4784	1896	3550
EWK-DAC 324/5	230	2795*	4295*	1.5	15.0	4784	1896	3550
EWK-DAC 450/3	218	2640*	4630*	2.2	15,0	5340	2209	3300
EWK-DAC 450/4	301	2875*	4865*	2.2	15,0	5340	2209	3600
EWK-DAC 450/5	383	3185*	5175*	2.2	15,0	5340	2209	3600
EWK-DAC 680/3	383	3400*	6700*	4.0	22,0	6426	2369	3890
EWK-DAC 680/4	410	3800*	7100*	4.0	22,0	6426	2369	4160
EWK-DAC 680/5	450	4200*	7500*	4.0	22,0	6426	2369	4160
EWK-DAC 900/3	492	5030*	8400*	4.0	30,0	7772	2092	3890
EWK-DAC 900/4	555	5350*	8800*	4.0	30,0	7772	2092	4160
EWK-DAC 900/5	559	5710*	9160*	4.0	30,0	7772	2092	4160
* Heat rejection at the following conditions: Tin: 35,0 ºC, Tout: 30,0 ºC, Twb: 24,0 ºC

Working Principles

The fluid to be cooled (usually water or glycol water) flows through the tubes of the coil without coming into direct contact with the external air, preventing dirt or pollution from entering the primary water circuit. The heat is transmitted from the fluid through the tube walls to the water, which is being continuously sprayed over the coil.

The fan situated at the bottom of the tower impel the air in counterflow to the water, thereby evaporating a small part of the re-circulating water, drawing off the necessary heat for evaporation and releasing it into the atmosphere. The rest of the water is re-circulated with a spray water pump from the basin to the spray nozzles. (Secondary circuits). A small quantity of heat is transmitted by convection to the external air, just as for an air cooler. Also, if performance is affected by environmental or water conditions, the coils can be easily dismounted and re-galvanized