|
Item |
COUNTER
FLOW TYPE |
Exchange Type |
¡çWater ¡éAir, 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 |
