How do you calculate the efficiency of a cooling tower?
Cooling Tower Efficiency Calculations
- Approach = Cold Water Temperature – Wet Bulb Temperature.
- Cooling Tower Efficiency =
- (Hot Water Temperature – Cold water Temperature) x 100/
- (Hot Water Temperature – Wet bulb temperature)
How do you calculate the flow rate of a cooling tower?
Heat Load (BTU/Hr) = GPM X 500 X ° Range of cooling, or rearranged to determine the design flow rate. GPM = Heat Load (BTU/Hr) = 6,250,000 Btu/Hr = 835 gpm 500 X ° Range of cooling 500 x 15° R Now you can make your cooling tower selection based on 835 gpm, cooling from 98°F to 83°F @ a design 76°F Twb.
What is cooling efficiency in cooling tower?
Cooling tower efficiency is limited by the ambient wet bulb temperature. Ideally, cold water temperature will be equal to the wet-bulb temperature which is practically impossible to achieve. Hence, cooling tower efficiency will be in between 70 to 75%.
How do you calculate CHW flow rate?
Chilled Water Systems
- Total Heat Removed. The total heat removed by an air condition chilled-water system can be calculated. h = 500 q dt (1) where.
- Evaporator Flow Rate. The evaporator water flow rate can be calculated. qe = htons 24 / dt (2) where.
- Condenser Flow Rate. The condenser water flow rate: qc = htons 30 / dt (3)
How do you calculate the rate of cooling?
Calculate the cooling rate by dividing each temperature data point by its corresponding time data point then average all of your answers to achieve a cooling rate. In other words, the change in the temperature divided by the change in time will give you an average temperature rate change.
What is L G ratio of cooling tower?
The L/G ratio of a cooling tower is the ratio between the water and the air mass flow rates. Cooling towers have certain design values, but seasonal variations require adjustment and tuning of water and air flow rates to get the best cooling tower effectiveness.
How do you convert TR to GPM?
GPM = (TR * 24) / ΔT in Fahrenheit.
How do you calculate Litres per hour?
Liter Per Hour (l/h) has a dimension of L3T-1 where L is length, and T is time. It can be converted to the corresponding standard SI unit m3/s by multiplying its value by a factor of 2.77777777778E-007.
What is the formula for calculating cooling kilowatts?
Using the energy equation of Q = ṁ x Cp x ΔT we can calculate the cooling capacity. We add 273.15K to the celcius to convert it to units of Kelvin. The Specific heat capacity (Cp) is measured in units of kJ per kg per Kelvin. This gives us a final answer of Q = 2,500kW of cooling.
What is the meaning of TR in cooling tower?
A ton of refrigeration (TR or TOR), also called a refrigeration ton (RT), is a unit of power used in some countries (especially in North America) to describe the heat-extraction capacity of refrigeration and air conditioning equipment.
How do you calculate water loss in a cooling tower?
Evaporation loss = 0.00085 x 10 000 x (100-85) = 127.5 gpm.
How do you Calculate evaporation rate of cooling tower?
– Calculate the area in square feet of the space to be cooled, and multiply by 31.25. – Calculate the heat gain through the windows. – Calculate the heat generated by occupants, allow 600 BTU per person.
What is the efficiency of cooling tower?
The efficiency of a cooling tower is expressed in terms of effectiveness. Effectiveness of a cooling tower is defined as the ratio of Range to that of Range + Approach. Effectiveness in % = Range / (Range + Approach) = 100 x (CW temp – CW out temp) / (CW in temp – Wet bulb temp)
What is evaporation rate of cooling tower?
It is the flow rate of water which is circulated in the cooling tower. Normally, the circulation rate is measured in m 3 /hr #8. Evaporation Loss: Evaporation Loss: It is the loss of water from a cooling tower by evaporation. Theoretically, the evaporation quantity of water is 1.8 m 3 for every 10,00,000 Kcal heat rejected.