Wet bulb temperature of tower erected location
The altitude of the tower
By evaluating the variable effects of these values, the solutions starting from each other are very complex and integral equations
Fill volumes required to be used according to tower fill type
Depending on the air flow rate information
Number of fan blades
Depending on fluid flow
Pipe diameters (pressure dependent on diameter)
Number and type of nozzles to be used
air velocity at the filling material
Unit water load at filling material
like design values are reached.
There are many issues to be considered in design.
For example: water distribution system should be selected correctly according to tower inlet and outlet temperatures.
If the Pvc-u or PPrc (copolymer-added PP) materials are not selected at the right temperature, the pipe breaks due to too much rigidity.
Another requirement in the water distribution system is the necessity of selecting pipes with appropriate pressure resistance to the installation pressure.
The same is true for the selection of polyester, the building stone of the grp (glass fiber reinforced polyester) material. In addition to the use of orthophthalic polyester, the selection of isophthalic polyester at higher temperatures is an important detail.
If there is acidic basic density in the system, vinil polyester should be preferred.
The choices made by considering the design values are as important as the least complex design calculations.
For example, if the "air velocity in the fill" is too high,
unnecessary water output will be observed, which is definitely an unwanted condition and will increase the water consumption and cause leakage.
Or, if the air velocity is below normal, inadequate heat transfer will not be used for the efficiency at which the resulting tower can be used.
Another example is "water load at the filling material" for rain density.
Sometimes the tower flow rate is quite high and the design of the tower is very small when the temperature difference (delta t) is low.
However, the amount of water falling on the surface of the filler unit at the head can not exceed a certain amount.
In the case of overheating, the heat transfer between the water and the air is not efficient, and the heat transfer, which is intended to be done easily in theory, can not be realized because the unit is filled with water. In this case, the designed tower size will be insufficient and will not be enough for the system requirements.
If the amount of water per unit surface is small, we will make less water cycle than we can efficiently pass through the tower, which we designed large as volume. The end of a capacity nest we can use will work inefficiently.
In addition, the investment made for the size and size of the fan selected according to physical size, filler type and density will be unnecessary. and the size of the engine chosen depending on the fan diameter will again create unnecessary investment costs, as well as unnecessary consumption of energy depending on the engine size.
These and many other similar topics are the areas of expertise of water cooling tower manufacturers from design to selection.