Open Circuit Cooling Tower

The circular counter-flow FRP cooling tower is an ideal equipment with high efficiency and energy saving. The internal use adopts counter-flow gas heat exchange technology and closed water circulation, which improves the reuse rate of water and effectively reduces costs. Therefore, it is widely used in various field, especially suitable for cooling water circulation systems such as air conditioning, refrigeration, air compressor stations, induction heating furnaces and condensation processes.

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Protect Induction Heating System

Induction heating system will generate heat in the induction magnetic field, overheated temperature will damage the components. Therefore, water cooling should be used to take away this part of the heat to protect the equipment. Installing a proper cooling system will extend the life of the induction power supply, reduce maintenance costs and downtime. The cooling system is easy for operation and maintenance, and is widely used in induction heating systems, forging furnaces, hardening systems, and other heat treatment systems.

Working Principle

The open circuit cooling tower is a device that uses the contact between air and water (direct or indirect) to cool the water. The circulating water is sprayed on the glass fiber filler through the sprinkler pipe, and then the water is in contact with the air to achieve the heat change. And the air circulation in the tower driven by the fan, which can bring out the hot air after heat exchange with water, so as to achieve the effect of cooling circulating water.

Structure

The complete cooling tower includes the tower shell, filling, fan, water distribution system, rotor, ventilation equipment, nozzles, water baffle, water collection tank, etc.

Tower Shell
The tower body is made of high-strength FRP composite material, and the surface gel coat resin contains anti-ultraviolet agent, anti-aging, corrosion resistance, no deformation, no fading.

Filling
Adopt polyvinyl chloride wave plate, with horizontal ribs added, strong water redistribution ability, low resistance, good thermal performance, high temperature resistance of 70 degrees, low temperature of -50 degrees.

Fan
The fan is made of high-grade plastic or aluminum alloy, aluminum alloy plate wing shape or glass fiber reinforced plastic blade, low noise and high efficiency.

Motor
Low noise and energy saving motor,
High temperature resistance.
Good sealing and waterproof performance,
The motor can save up to 30%, and the piping in the tower can be used as a closed loop, which greatly reduces user operating costs.

Deceleration device

Adopts polyester fiber reinforced neoprene power belt transmission, high temperature resistance, high efficiency, does not stretch when exposed to water, overcomes the slipping phenomenon, and has low noise.

Bracket

The steel brackets in the tower are treated with galvanizing process and coated with anti-corrosion paint or electrostatic powder spraying, which has a particularly strong anti-corrosion ability. Fasteners are all galvanized or stainless steel bolts.

Technical Specification:

Model	Flow Rate (m3/h)	Fan		Air Flow (CMM)	Water Pressure (Kpa)	Net Weight (kg)	Operating Weight (kg)	Dimension (mm)
Model	Flow Rate (m3/h)	Motor Power (kw）	Diameter(mm)	Air Flow (CMM)	Water Pressure (Kpa)	Net Weight (kg)	Operating Weight (kg)	Max Diameter	Height
NRT-10	7.8	0.18	Φ600	85	13	46	190	Φ945	1530
NRT-15	11.7	0.37	Φ600	140	13	54	290	Φ1195	1415
NRT-20	15.6	0.55	Φ730	160	14	67	300	Φ1195	1590
NRT-25	19.5	0.75	Φ730	200	16	98	500	Φ1400	1820
NRT-30	23.4	0.75	Φ730	230	16	116	530	Φ1650	1705
NRT-40	31.2	1.5	Φ890	280	16	130	550	Φ1650	1775
NRT-50	39.2	1.5	Φ890	330	17	190	975	Φ1830	1835
NRT-60	46.8	1.5	Φ1150	420	17	240	1250	Φ2145	1955
NRT-80	62.6	1.5	Φ1150	450	18	260	1280	Φ2145	2035
NRT-100	78.1	2.2	Φ1410	700	21	500	1690	Φ2900	2370
NRT-125	97.5	2.2	Φ1410	830	23	540	1640	Φ2900	2555
NRT-150	117	2.2	Φ1410	950	23	580	1680	Φ2900	2555
NRT-175	136.8	4	Φ1750	1150	30	860	1960	Φ3110	2850
NRT-200	156.2	4	Φ1750	1250	30	880	1980	Φ3110	2850
NRT-225	175.5	5.5	Φ2050	1500	33	1050	2770	Φ4120	3580
NRT-250	195.1	5.5	Φ2050	1750	33	1080	2800	Φ4120	3580
NRT-300	234	7.5	Φ2350	2000	34	1760	3930	Φ4730	3680
NRT-350	273.2	7.5	Φ2350	2200	34	1800	3790	Φ4730	3680
NRT-400	312.1	11	Φ2745	2400	36	2840	5740	Φ5600	3840
NRT-500	392.4	15	Φ2745	2600	36	2900	5800	Φ5600	3840
NRT-600	468	15	Φ3400	3750	42	3950	9350	Φ6600	4470
NRT-700	547.2	18.5	Φ3400	3750	42	4050	9450	Φ6600	4470
NRT-800	626.4	22	Φ3700	5000	45	4700	11900	Φ7600	4720
NRT-1000	781.2	22	Φ3700	5400	45	4900	12100	Φ7600	4720

ROCHO technical team can customize the induction heating power supply for special purposes according to customer requirements, and design capacitors, frequencies and induction coils according to the metal workpiece to be heated and heating requirements to achieve the best heating effect.
When you need to consult or order machine, please provide the following information:
(1) the local industrial voltage;
(2) the name and material of the product to be processed;
(3) the required process: heating, brazing, hardening, melting or annealing;
(4) the size of the product to be processed, such as diameter and length and if drawings can be provided.

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