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Newin Round Type Counter Flow Cooling Tower (NRT series)


 NRT series counter flow round type cooling towers were strictly examined by "Quality Supervision and Inspection Center of National Glass work" in 2006,  the result showed NRT series cooling towers completely comply with all national standards. NRT series counter flow induced draft cooling tower is designed with bottle type structure, so that the volume of prevailing air is minimized. Every part of the cooling tower is designed and made precisely and further permits easy installation and endurance due to light weight and strong structure. The testing report of cooling capacity proves its high efficiency. This series of cooling tower have passed the GB7190.1-1997 quality certification of super low noise.         


Design Features

 

NRT series counter flow induced draft cooling tower is designed with bottle type structure, So that the volume of prevailing air is minimized. Every part of the cooling tower is designed and made precisely and further permits easy installation and endurance due to light weight and strong structure. The testing report of cooling capacity proves its high efficiency.

Casing and Water Basin

Adopting small ventilation resistance packing and special designed FRP/aluminum alloy high efficiency fan, greatly reduced the motor power. Smaller motor power are designed for low noise model, save more power, double speed motor for optional to power saving according to customers’ special requirements.Fiberglass reinforced polyester(FRP) is applied with water-resistance resin and high quality fiberglass mat. With good moisture, high gel,high strength, spray the gel-coat on FRP parts by machine and is thermal formed. The surface is as smooth as mirror and could resist ultraviolet radiation. Also, it is colorfast and durable.

     

Axial Fan

All cooling tower fans with adjustable pitch blades are applied to being balanced, so that it can operate stably and quietly. Material chosen are A.B.S, aluminum alloy, stainless steel and F.R.P. 


Fan Drive

Small capacity cooling tower adopts direct drive low noise fan. Bigger capacity fan equipped with Belt drive speed reducer. Adjust belt tension through automatic spring to save the manual maintenance. Total enclosed structure can assure the low noise operation. This series of cooling tower have passed the GB7190.1-1997 quality certification of supper low noise. Further more the belt is durable without negative effect from water vapor and sunshine.

       

Water Distribution
The using of high coefficient rotating sprinkler heads made of reinforced plastic or aluminum alloy can reduce the pressure of friction loss. Besides, the water can be distributed evenly to achieve the max thermal performance.


Infill

Standard and low noise cooling tower are using high class thermal formed PVC sheet. The sheets are added with industrial plaits material and long fiberglass to slow the aging and increase the strength. Moreover the water film is thinner and longer so that the infill cabbage coefficient is higher. The infill is formed in the factory, instead of at construction site. To avoid uneven problem during installing. And it cold be easily cleaned and maintained in future. High temperature cooling tower is using P.P. Infill that could withstand up to 90 degreeC water temperature. The surface of such infill is corrugated to increase the filling pitch to make sure that infill is clog-free and overcome the problem of water quality.

 

        Black color infill

 

  Transparent color infill

 

         White color infill


Steel Parts
All the steel parts and hard wares are made of hot dip galvanized steel(HDGS), so that the cooling tower is rust-free, durable and long service life. And the frame is stable and with good rigidity, the load is evenly distributed among each foundation, which makes operation and assembly easily.
 

 

Component Instructions

 

Frame: HDGS Hot-dip galvanized U-steel

Casing: F.R.P.

Water basin: F.R.P.

Distributing system: HDGS & PVC 

Fan: ABS or Aluminum alloy

Motor: fully enclosed waterproof type

Infill: PVC/PP

Connections: Flange

 

 

 

Standard of Design & Manufacture


 


 Related Documents:

-----------------------------------------

NRT Series round type cooling tower

 

♦ NRT Series  brochure


 NRT Series  catalog

 

 NRT Series user manual


♦ NRT Series piping size


♦ NRT Series material list

 

  Chinese Association of Refrigeration        ISO9001

  ISO9001         CTI menber 

 

Manufacturer’s standard according to national standard GB7190.1-1997, installation, acceptance criteria, and mainly refer to the following national standards and industry standards.
GB/T 1447-83 glass fiber reinforced plastic tensile performance test methods.
GB/T 1448-83 glass fiber reinforced plastic bending performance test methods
GB/T 1462-88 fiber reinforced plastic water imbibition test method.
GB 2828-87 batch-by-batch inspection counter sampling procedures and sampling table.
GB/T 3854-84 fiber reinforced plastic barcol hardness test method.
GB/T 1033-86 plastic density and relative density test method.
GB/T 1040-92 plastic tensile test method.
GB/T 8237-87 glass fiber reinforced plastic (FRP) using liquid unsaturated polyester resin
GB/T 2576-89 fiber reinforced plastic resin content unsolvable test method
GB/T 2577-89 glass fiber reinforced plastic resin content test method.
JC/T 278-94 in the alkali glass fiber roving.
GB/T 8924-88 glass fiber reinforced plastic combustion performance test method of oxygen index method.
GBJ 102-87 industrial circulating water cooling design specification.
GB 50204-92 concrete structure engineering construction and acceptance specification.


Options

 

Dul-speed motor & VFD motor

Color of tower body: customized

Silencer blanket/silencer skirt
Wind inducer
Stainless steel bolts

F.R.P air inlet louver



Product details

 


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