BUSINESSINDUSTRIAL(COUNTER FLOW)
| Item | COUNTER FLOW TYPE |
|---|---|
| Exchange Type | ←Water ↓Air, Cross flow type |
| Efficiency | When the amount of water is equal to the heat exchange coefficient, its volume is greater than that of the counter flow type and theoretical interpretation tends to be more difficult. |
| Distribution of air stream | Since the louver is located in the lower level, the distribution of air stream is constant regardless of the height of the tower |
| Water spray device |
Water is sprayed by the distribution pipe without a hot water tank. So, it is hard to perform repairs or maintenance. In case of poor water quality, the pipe tends to corrode and the nozzle is likely to get clogged. |
| Power | The fan moves the air stream vertically. So, the static pressure loss due to the obstacle is quite high and use of high power motors leads to excessive power consumption. |
| Water spray pressure | Since a pump sprays water, the water spray pressure is quite high. |
| Tower height | The LOUVER, the FILLER, the DISTRIBUTION PIPE and the ELIMINATOR are located on the same vetical line. So, the tower height is high and the pump efficiency is also high. |
| Area size of the tower | Since the LOUVER, the FILLER and the ELIMINATOR are located on the same vertical line, the total area size of the tower is small and it is equivalent to the area size of the filler. |
| Temperature of the cold water tank |
The temperature is constant throughout all the inner areas of the water tank. |
| Recirculation of the discharged air |
Since the outlet for the fan is located very far from the louver, once the air is discharged, it is not likely to get circulated again. |
| Noise | Because the tower is very tall and the separation between filler and cold water tank is large, the falling water generates excessive noise. |
| Repair and maintenance |
The entrance is located in the upper area of the tower. Therefore, it is cumbersome to perform repair and maintenance in the middle of operation. |
| Price | The larger the facility is, the less installation cost compared to a cross type. |
| Item | Comparison of materials(STANDARD MATTERIALS USED) |
| FILLER & ELIMINATOR | DOUGLAS, FIR, PP, PS, PVC |
| FRA ME | DOUGLAS FIR, SS400+HDG, RF CON'C, FRP, SUS304 |
| FAN STACK | DOUGLAS FIR, SS400+EPOXY, SS400+HDG, RF CON'C, FRP, SUS304 |
| CASING & LOUVER | DOUGLAS FIR, CACB, RF CON'C, FRP |
| FAN DECK | DOUGLAS FIR, FRP, RF CON'C, SS400+HDG, SUS304, SS400+EPOXY |
| HOT WATER BASIN | DOUGLAS FIR, FRP, RF CON'C, SS400+HDG, SUS304, SS400+EPOXY |
| COLD WATER BASIN | FRP, RF CON'C, SS400+HDG, SUS304, SS400+EPOXY |
The kinds of frame are metal, RF CON' C and DOUGLAS FIR. Which is treated to preserve from decay with ACQ and all metal frames are coated with zinc alloy and casing is composed of zinc coated plae or CACB combinated with FRP these features will give you high resistance of corrosion and guarantee high durabillity
Prefabricated construction will be the most convenient to main-tain the system.
Excellent eliminator will prevent from any water drift loss.
Newly developed v-belt double reducer or geared double reducer and FRP fan will give you low noise operation
Utilizing rectification system increases the efficiency of filling and also prevents any water scattering to the outside of tower.
Low pressure in opper water tank(poping) gives excellent distribu-tion of water spraying.
Big sized cold water basin equipped with drain and filling system will prevent any air inflow in pipe lines.
Specially designed 'Dae Hwa Tech Co., Ltd' bell mouth type FRP cylinder guarantees high preformance.
| MODEL＼ITEM | SPECIFICATION | DIMENSION | CELL | FAN & MOTOR | |||||
|---|---|---|---|---|---|---|---|---|---|
| R/T | AIR VOLUME (cmm) |
WATER FLOW (㎥/hr) |
W | L | H | EA | DIA(Φ) | KW | |
| DHG-CU-1250 | 1,250 | 8,288 | 975 | 4.800 | 9.600 | 7.900 | 2 | 3,000 | 8.5x2 |
| DHG-CU-1500 | 1,500 | 9,945 | 1,170 | 5.400 | 10.800 | 7.800 | 2 | 3,600 | 22x2 |
| DHG-CU-1750 | 1,750 | 11,603 | 1,365 | 5.400 | 10.800 | 8.300 | 2 | 3,600 | 22x2 |
| DHG-CU-2000 | 2,000 | 13,260 | 1,560 | 5.600 | 11.200 | 8.500 | 2 | 4,000 | 30x2 |
| DHG-CU-2500 | 2,500 | 16,575 | 1,950 | 6.400 | 12.800 | 9.000 | 2 | 4,500 | 37x2 |
| DHG-CU-3000 | 3,000 | 19,890 | 2.340 | 5.600 | 16.800 | 9.000 | 3 | 4,000 | 30x3 |
| DHG-CU-4000 | 4,000 | 26,520 | 3.120 | 5.600 | 22.400 | 10.000 | 4 | 4,000 | 30x4 |
| DHG-CU-5000 | 5,000 | 33,150 | 3,900 | 6,400 | 25,600 | 10,000 | 4 | 4,500 | 37x4 |
※ This spec according to situation could be changed, with our company discussing.
The motor of the cooling tower is totally closed and designed to make high efficiency. Based on customers' requirement, a pole change type or an inverter type is supplied. The reducer and the shaft are designed sulitably for the horse power and the rpm of fan speed. it is special waterprcof-treated so it can stand long-term consecutive driving under high temperature and humidity.
It has neat appearance and close blade top clearance, through which it improves the performance of the cooling tower.
∮12,000 ~ 10,000 are available and it is made of FRP, steel plate or wood
Eliminator, which prevents the loss of water caused by scatering and evaporation, is made of PP, PVC, HIPS, or wood. Depending on the type of the cooling tower, other material, which is excellent at neat resistance and acidity removal and has ong ifetime, can be sued
The filler makes the heat transfer area of water and air and the heat exchange time large. A splash type and a film type are available. Wood, PP, PVC or HIPS, whch is heat-resistant enough to stand hot water, is sued.
It is made of concrete, FRP, wood, or steel plate. The nozzle which is suitable for various FIPPs is selected to evenly soray water. By having ro dead space, it improves the cooling capacity.
It is designed to delemine the cire ction of air flow and to increase the cooling effect, FRP or aluminum is used.
