Cooling tower calculations

What is the efficiency of cooling tower? How do you calculate evaporation in cooling tower? How is cooling tower capacity measured? In this article explained about basic concepts of cooling tower , types of cooling towers , formula for cooling tower efficiency. In summer the ambient air wet bulb temperature raises when compared to winter thus limiting the cooling tower efficiency.

A 1-ton chiller is equal to 10British thermal units.

This amount of heat could theoretically melt ton of ice in hours. Cooling Tower Basic Calculations. The recirculation rate and the temperature drop across the cooling tower are the two pieces of data needed to calculate the amount of water lost from the open recirculating cooling system (due to evaporation). Use this handy calculator to approximate cooling tower water use and cycles of concendtration. Remember, TRS can help with water saving designs and treatment systems.

Those theories are briefly described in this guideline to provide the basic understanding of its calculation. For nearly a century, we have provided exceptional quality equipment and service to the HVAC, process cooling , industrial, and refrigeration markets. A cooling tower ton is defined as: cooling tower ton = TONS evap = TONS cond x 1. The mass balance around a cooling tower as illustrated in the figure to the right is: Process leaks, windage, and drift are really just forms of uncontrolled blowdown.

Pounds per gallon of water at a typical temperature. Tonnage Duty Calculator Flow (Gallons Per Minute) Hot Water Temperature °F. CC and AB cooling tower calculations.

The average temperature and relative humidity are 82°F and respectively. Compressor B was for the smaller side of the cooling tower , which only contained four fans. NTU to the cooling tower performance analysis.

If you read this book carefully, you can make any cooling tower design programs by yourself. Again, this will be a first issue releasing the actual engineering approach of cooling tower with the examples in the world. Applying mass and energy balance calculations enables process engineers to evaluate evaporation loss, blowdown and makeup. The performance of cooling tower fans depends on the calculation degree of static pressures at the cooling tower. The minimum value of pressure drop coefficient at the air inlet is including the two turns of air stream directions and is 1. Drift loss varies between 0. K is rhe specific heat capacity of water.

Our modular cooling tower design is longer-lasting, cheaper to install and maintain, has lower energy usage, and has a smaller operating cost than conventional towers. We also do cooling tower rentals and repairs in case something unexpected comes up. Are you looking for cooling tower water savings or cooling tower energy saving ideas? Use our interactive water calculator below to see how much money you can save with some simple water and system adjustments.

This calculator is set up using standard cooling tower calculations and rules-of-thumb. The standard rule of thumb is that the recirculataion rate is three times the tonnage of the tower.

Newer reciprocating chillers may have a recirculation rate that is less. They will also have nameplates on the pump frame that show the the pump rating. To calculate the make-up water flow rate, determine the evaporation rate using one of the following: 1. Hot water temperature entering the cooling tower — °F w = Cold water temperature leaving the cooling tower — °F This derives from the fact that a Btu (British thermal unit) is the amount. Estimate the system volume by measuring the sump of the tower and the water level in it.

Multiply the number of cubic feet of water by 7. A chemical plant operates a mechanical draft cooling tower circulating 6million gallons for the year of water to cool down process stream. Source test indicated 0. Nickel present in the PM emissions from the cooling tower. Facilities are required to report their VOC, PM, and TAC emissions from the cooling tower using the new AER web program. In determining the heating loa credit for solar heat gain or internal heat gains is usually NOT included and the thermal storage effects of building structure are generally ignored.

This produces a secondary, but equally important, benefit of allowing the cooling tower to operate at higher carbonate alkalinity and pH levels.