Table of Contents
- 1 What is the effect of humidity on cooling tower performance?
- 2 Why do cooling towers need water treatment?
- 3 What is wet bulb in cooling tower?
- 4 What chemicals are used in cooling tower water treatment?
- 5 What happens when chlorine is added to water?
- 6 Why is the amperometric method not applicable to cooling tower waters?
What is the effect of humidity on cooling tower performance?
Relative humidity does NOT affect the performance of an evaporative cooling tower. Relative humidity DOES affect the rate of evaporation from the tower.
How do you maintain pH in a cooling tower?
What You Can Do to Balance Tower Water pH
- Determine Water Quality. Start by measuring the water’s pH, alkalinity, hardness and conductivity.
- Establish Target Cycles of Concentration.
- Monitor COC and Water Performance.
- Automate Your Processes.
- Protect Your Equipment.
- Work With Your Vendor.
Why do cooling towers need water treatment?
Why Cooling Water Treatment Is Done? Proper water treatment in your cooling tower system is required to minimize the risk of corrosion, scaling, and microbiological buildup. These issues can reduce plant productivity, cause unplanned downtime, and require costly equipment replacements if conditions get out of control.
How do cooling towers reduce water temperature?
The decrease in the outlet water temperature by using water path cooling is proved by the conventional heat transfer formulae. The second method deals with the decrease the liquid to gas flow ratio(L/G) by increasing the air velocity with the help of cylinder blocks near the louvers of cooling tower.
What is wet bulb in cooling tower?
Wet bulb temperature essentially measures how much water vapor the atmosphere can hold at current weather conditions. A lower wet bulb temperature means the air is drier and can hold more water vapor than it can at a higher wet bulb temperature.
What causes high TDS in cooling tower?
1. Through evaporation – as water evaporates in the cooling process it is required to be replaced as ‘make-up’ or ‘top-up’ water and; 2. ‘Bleed’, ‘blow-down’ or ‘dump’ cycles – as water is evaporated, concentrations of total dissolved solids (TDS) increase which is detrimental to the efficient operation of the unit.
What chemicals are used in cooling tower water treatment?
What are the Chemicals used in Cooling Tower Water Treatment?
- Corrosion and Scale Inhibitors.
- Algaecides and Biocides.
- pH Adjusters.
How much chlorine is added to the cooling tower water?
In most cooling tower systems, the chlorine is added at or near the condenser inlet in enough quantity to produce a free residual chlorine level of 0.1-0.6 mg/1 in the water leaving the condenser. The amount of chlorine added to maintain the free residual chlorine depends upon the amount of chlorine demand agents and ammonia in the water.
What happens when chlorine is added to water?
As the pH increases above 1.9, chlorine oxidizes-water to produce HOCl, which further dissociates into OCl above a pH of 7.3. Elemental chlorine is not as effective in killing organisms as HOCl and OCl -.
Why do cooling towers need BTUs to cool down?
If steam is coming in, or doing any kind of heating, you have to take the BTUs out at some point. A cooling tower is, in essence, a heat exchanger. It rejects waste heat to the atmosphere by using air and water in direct or indirect contact to remove process heat and bring a water stream down to a lower temperature.
Why is the amperometric method not applicable to cooling tower waters?
The amperometric procedure for determining residual chlorine in aqueous solutions is not applicable to all cooling tower waters. Some cooling tower waters contain copper* turbidity, natural buffering, and water treatment chemicals.