Cooling Tower Fan Blade Angle Setting

First of all technically it is called the pitch angle of a turbine blade.

Cooling tower fan blade angle setting.

Set the blades 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. Duty requirements are 1 1 million actual cfm 0 477 in. Blades set at a 20 degree angle meet too much resistance which may cause the motor to burn out. The allowable difference in inches in elevation of the blade tip in the fan stack between the lowest to the highest blade.

Prev cooling tower fan blade angle setting. Marley fan cylinders are crucial components for protecting fan blades minimizing sound and vibration and facilitating optimal performance across all cooling tower applications. Fan blade an overview sciencedirect frp grp cooling tower improving cooling tower fan system improving cooling tower fan system. Leave a reply cancel reply.

Blades that are set at a lower angle will slice the air but not create proper air circulation. The pitch angle of 50 tonne unit was around 12 degree as per my observation. Cooling tower fan blade angle measurement. The angle of attack in airfoil design dictates the amount of blade.

A t 25 t 250. Principles involved is that the work done at any radius along the blade is a function of blade width angle of attack and tangential velocity squared. Monroe hudson products corporation houston texas presented at the. By saum hadi posted on february 16 2020.

Generally the pitch angle of a cooling tower turbine is very from 6 degree to 15 degree depending on the operational speed and discharge. How to install a marley nc cooling tower episode 13. Fan blade assemblies are sold as a set to include part 17 01 fan hub part 17 02 fan blades and part 17 04 u bolt if applicable. Blade angle tolerance is to be 0 2 as measured by an approved digital protractor.

Each set is factory tested and balanced to avoid any vibration issues. Houston texas fans key to optimum cooling tower design nomograph gives the reciprocal of the density ratio. 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. Let s look at a typical case of fan selection for a new tower design.

Considered will be a 26 ft 28ft or 30 ft diameter fan. Next delta breez fan installation.