Cooling Tower Fan Blade Angle Measurement

Made of reinforced plastic material the blades are coupled to the fan hub by bolts and glue.

Cooling tower fan blade angle measurement.

Blade angles performance of a small cooling tower. The method is easy tools required in this videos to measure and adjust the pitch angle of the cooling tower fan blades ar. What is cooling tower fan blade angle quora. Duty requirements are 1 1 million actual cfm 0 477 in.

Fans key to optimum cooling tower design cooling tower fan blade at best cooling fan blade cooling tower fan blade at best effect of wind turbine on the. Vibration sensors were properly installed on the gearbox driving the fan and the vibration levels routinely monitored. The cooling tower blades move large volumes of air quietly and efficiently. The pitch angle of 50 tonne unit was around 12 degree as per my observation.

Finally it was found that the cooling tower can operate under all the given approaches 5 c 6 c 7 c and 8 c at the blade angle of 67 by maintaining the cooling range of 5 c wet bulb temperature of 26 c and water flow rate of 3 9 m3 h. Blades set at a 20 degree angle meet too much resistance which may cause the motor to burn out. Let s look at a typical case of fan selection for a new tower design. From 0 139 to 0 510 ipspk at one measurement point used for.

The vibration levels at both motor fan speed are to be measured at the motor while the vibration levels at the blade pass frequency is to be measured at the fan shroud or stack. Frequencies present at cooling towers. Cooling tower fan blade angle measurement. Generally the pitch angle of a cooling tower turbine is very from 6 degree to 15 degree depending on the operational speed and discharge.

Made of aluminum alloy the blades are freely adjustable by the pitch angle scale of the fan hub. By saum hadi posted on february 16 2020. Fan speed motor speed blade pass frequency. Try either a smaller motor sheave or larger fan sheave.

Blades that are set at a lower angle will slice the air but not create proper air circulation. Reduce fan blade pitch by 1 5 degrees and re measure. For a ceiling fan to move the correct amount of air and achieve good circulation you should set the blades at a 14 degree angle. This paper is a brief case history of how cracked blades on a cooling tower fan were detected and a fan failure likely avoided by the use of vibration analysis.

A t 25 t 250. Considered will be a 26 ft 28ft or 30 ft diameter fan. How to adjust it. First of all technically it is called the pitch angle of a turbine blade.

B t 260 and above.