Cooling towers can be split into two distinct categories. Operation of cooling tower counterflow design 5 counterflow design. Bibliography of technical papers fans cooling technology. Amarillo gear company has many years of experience dealing with gearboxes. Amertechtowerservices ats has an seclusive agreement to distribute oil that. For amarillo a series cooling tower drives each amarillo fan drive is the result of careful design and manufacturing techniques. Components of the gear box fail without proper maintenance. It is intended that each potential trouble source be evaluated so that the necessary design safeguards can be erected against.
In the interest of technological progress, all products are subject to design. If you maintain your gearbox properly a gearbox can last 10 15 years. Factors affecting cooling tower performance capacity utilization amount of water circulated range determined by the process it is serving determined by heat load and water circulation rate thus range. Cooling tower and gearbox overhaul free download as word doc. One of the design features is a high fiber volume composite reinforcing ring designed integral into the flange area. The baldorreliance rpm ac direct drive cooling tower elminates these problems by coupling the motor. Cooling tower drives march, 2010 energy management centre. The customer had already prepared to have the gearbox changed, but wanted confirmation via vibration analysis prior to performing the work.
Amarillo single reduction gear boxes 110 single reduction ab c cwith nonreverse. Amertechtowerservices ats can also provide cooling tower gearbox rebuilds and spare parts like gear sets, bearings, seals, among others. Due to the gearbox location in a cooling tower, minimal airflow from the cooling tower fan reaches it. Not only can you get a new replacement gearbox for your cooling tower. Drawing from this experience, why is gearbox maintenance so important. Whether you have questions on marley geareducer operation and maintenance, need components to perform a repair yourself, or want to send your unit back to us for the highest level of care, spx has the solution. Featured product adiabatic coolers from paharpurspartium can reduce energy consumption by up to 40% or reduce water usage by up to 80%.
How much do you know about your cooling tower gearboxes. The exact combination of this gearbox ratio, fan blade design and fan pitch contributes to the specific performance and energy efficiency of the. We realize that if your cooling towers gear box fails, you cant wait weeks or even days for a replacement to arrive. Cooling tower and gearbox overhaul gear bearing mechanical. Failure to follow the guidelines provided in this manual may result in poor performance, unnecessary equipment failure and down time. Syed ahsan bukhari trainee mechanical engineer utilities scheme of presentation cooling tower. Gearbox design gear transmission mechanics free 30. As with any precision machine component, proper installation, maintenance and operating procedures are imperative for long life and trouble free service. Variable speed motors direct drive cooling tower motor. Flange mount designs are available in a wide torque range in frame sizes fl250, fl280, fl320, fl360, fl400, fl440, and fl5800 conventional tower design new direct drive tower design a direct drive motor eliminates many components of.
Cooling tower fundamentals is devoted to the implementation of water cooling systems which satisfy design and environmental requirements with sound engineering and responsible cost. Considered will be a 26 ft, 28ft, or 30 ftdiameter fan. The knowledge of the unsteady loads is fundamental for the fan blade fatigue design and for the evaluation of the cooling tower vibration level. For the reduce of the heavy expenses analysis is done. The marley difference because we design and manufacture virtually all the components of the w400 cooling tower, youll benefit from single source responsibility and reliability. Cooling tower speed reducers are usually driven by an electric motor and, most commonly, drive a fan generally mounted directly on the unit output shaft. Cooling tower cooling towers are heat removal devices used to transfer process waste heat to the atmosphere. We consistently maintain a substantial inventory of new amarillo gear boxes as well as refurbished marley gear reducers in both double and single reduction ratios. It will likely take around 2 years for your gearbox to fail. High pressure drop tower spray nozzles in combination with tower bypass.
However, lost production because a cooling tower is down due to a gear box that was not. Cooling tower applications food processing facilities cooling towers are used in food processing plants all over the world. Condition monitoring of cooling tower fan gearboxes by. With adiabatic coolers, there is no tradeoff in thermal performancethis is a fresh new. The manufacturer of your cooling tower usually lets customers order new gearboxes or have trained technicians that can repair or rebuild a faulty gearbox using original equipment manufactured parts. View and download marley aquatower 490a user manual online. Operating and maintenance manual philadelphia gear.
The most common is for a cooling tower that provides the required heat rejection capacity with a high level of reliability at low cost. Watertight motor design operates in the air stream. Cooling tower noise sources fan noise low frequency blade passage tone below 63 hz spraying and splashing noise of water higher frequencies motor, belts or gearbox noise intake noise level typically 5 db less than discharge noise increases with fan speed. Mandy parks, component sales manager cooling tower depot, inc. Maintenance of gearboxes is difficult and expensive, given the location. Dry cool air enters the bottom of tower, moves thru fill where it accepts heat energy from the hot water and moves out the top of the stack as warm, moist air. The following instructions are offered to cover most conditions. Types basic terminologies cooling tower components mechanical drive arrangement drive shaft gearbox fan troubleshooting 2. These limits are based on the structural design and components of the cooling tower. The overall tower design must assure uniform air and water flow throughout. Drift reducers are important cooling tower parts that work to eliminate water droplets in the air and recycle the moisture for operational processes. Houston, texas fans key to optimum coolingtower design nomograph gives the reciprocal of the density ratio.
Maintenance and failure of the gearbox, and associated components, is often problematic with traditional systems. Lets look at a typical case of fan selection for a new tower design. At these condi tions, the cooling tower rejects 15,000 btuih per nominal cooling tower ton. Address 304a, shanthi gears road, singanallur, coimbatore 641 005, tamil nadu, india. They do this by abruptly forcing the moist air in another direction, separating the moisture from the air and redirecting it to another part of the cooling tower. This design offers supreme fatigue strength for cooling tower operation. Paharpur designs its own parts and components specifically for cooling tower operation. In open circuit systems the recirculating water returns to the tower after 1 one ton of refrigeration is equal to 12,000 btuhour. Lack of tower treatment with consequent fouling of the condenser. The most common motor speed is 1800 rpm, requiring the average gearbox to reduce motor speed by approximately 918 times to achieve the desired fan speed. Providing proper installation, maintenance and operation of the series tci cooling tower is the owners responsibility, and is required for safe and efficient operation. The most significant unsteady loads are generated by the effect of the aerodynamic interference between the fangearbox supporting beams and the fan blades. Cooling tower fill media what is cooling tower fill media.
Fill media is by far one of the most important cooling tower. The historical derivation of this 15,000 btulh cooling tower ton, as compared to the 12,000 btuih evaporator ton, is based. Rnpt shafts clockw general arrangement aioo no scale cooling tower depot, inc 651 corporate circle, ste. Office address 9007 farmtomarket 2759 richmond, texas 77469. The exact combination of this gearbox ratio, fan blade design and fan pitch contributes to the specific performance and energy efficiency of the cooling tower in a given application. Sometimes other gear manufacturers design and rate to lesser standards than agma. These are two stage gear boxes having 1st stage out of spiral bevel pair duly case hardened. Philadelphia gear brand cooling tower drives can be found in power plants across the globe. Cooling towers act as a special type of heat exchanger that cools down water heated up by industrial equipment and processes.
Direct drive cooling tower motor and drive system for industrial. Other factors, which we will see, must be stated along with flow rate m3hr. Because the marley md tower provides another dimension of footprint and design flexibility, expanding the landscape of marley solutions. We have 6 series of gear reducers or gearboxes designed according to specific tower capacities and are designed in order to require minimum. For example, a cooling tower sized to cool 4540 m 3hr through a.
Locate and secure components in an appropriate manner and in their proper position. Evolution of cooling tower gearboxes power transmission blog. Higher motor torque ratings are available using taller motors when space is available. These studies were complicated by the fact that the cooling tower market is typically driven by one of two powerful, yet often conflicting requirements. In three months after the service commencement, however, one gearbox suddenly exhibited abnormal noise, necessitating manual stoppage of that train. Amarillo single reduction gear boxes cooling tower depot. Download as docx, pdf, txt or read online from scribd. The energy efficiency design is a trademark of exxon mobil corporation. Philadelphia gear technical manuals include important information on the installation, operation and maintenance of philadelphia gear drives. In the scope of the tower cost, the gear box cost is minimal. Protect your cooling tower gear drives with mobil shc synthetic lubricants.
Key component of the cooling tower fan is the gearbox. Cooling towers are commonly used in petroleum refineries, power generation plants, natural gas processing plants, petrochemical plants, and other industrial processing facilities. Range range is determined not by the cooling tower, but by the process it is serving. Star cooling towers cooling tower hardware expert opinion. Cooling tower applications food processing facilities. It also offers extraordinary corrosion resistance in a chlorine rich cooling tower environment. All components are designed and selected to be a part. Geareducer, specifically for cooling tower applications.
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