Fluidika techlabs cooling tower performance evaluation. Range range is determined not by the cooling tower, but by the process it is serving. Cooling tower applications food processing facilities. The water exits the cooling tower and is sent back to the exchangers or to other units for further cooling. A clean and properly serviced unit will provide a long service life and. Understanding key components of cooling towers and. Pdf for the majority of cooling towers installed, of which there are greater than. Keeping your cooling tower running smooth and in good shape requires more than just the annual inspection before startup. The process involves adding cleaning chemicals and circulating for 6 to 24 hours, depending on the system and usage, then draining and flushing out the system. Best management practice and guidance manual for cooling towers. Cooling technology institute wtb148 08 routine treatment continuous always preferred o continuous free residuals of 0. Although a consistent biocide program can reduce the risks, it is best practice to clean a cooling tower at least twice a year. Oct 15, 2015 seasonal cooling towers need a deep cleaning of all interior surfaces of the tower at least once per year, and 12month cooling towers should be cleaned twice per year. Natural draft designs use very large concrete chimneys to introduce air through the media.
The association of asset management professionals or as we like to call it amp formerly the association for maintenance professionals has a mission to create a new era for the practice of maintenance, reliability in the context of asset management for organizations to enhance the delivery for the triple bottom line of economic prosperity, environmental sustainability and. Fluidika techlabs develops cooling tower performance evaluation software for natural draft cooling towers and mechanical draft cooling towers. One helpful means to that end is the water cooling tower. The three marley cooling towers in need of repair and protection. Mechanical draft cooling towers are much more widely used. Cooling towers, wet cooling, dry cooling, aircooled heat exchangers, hybrid cooling systems contents 1. Pdf this project designed and fabricated an improved mini cooling tower imct. Dec 19, 2017 cooling towers are recirculating water systems used to remove heat from building air conditioning equipment and industrial processes. Cooling towers, evaporative condensers and closed circuit cooling towers. Failure to produce for examination the cooling tower maintenance plan that must be kept in the building where the cooling tower is located. Seasonal cooling towers need a deep cleaning of all interior surfaces of the tower at least once per year, and 12month cooling towers should be cleaned twice per year. Cooling tower systems operation is most efficient when their heat transfer surfaces are clean.
Theory of cooling towers cooling towers fall into two main subdivisions. In addition to blow down, most recirculating cooling water system maintenance plans include controlled additions of conditioning chemicals. However, a wellmaintained cooling tower will continue to function at the original optimum efficiency, keeping energy costs low. Specific startup instructions and additional water quality recommendations. Operating and maintenance instructions cooling towers. Different environmental conditions may dictate more frequent servicing. A nominal cooling tower ton is defined as cooling 3 gpm of water from 95f to 85f at a 78f entering air wetbulb temperature. At these condi tions, the cooling tower rejects 15,000 btuih per nominal cooling tower ton. Open the bleed line valve must be furnished by others on cooling tower models vxtn215 through vxt4800 and adjust bleed to the recommended rate see water treatment. Vxt cooling towers vxiss industrial fluid coolers vxcss evaporative condensers operating and maintenance instructions b altimore aircoil company vx equipment has been designed to give long, troublefree service when properly installed, operated and maintained.
A guide to troublefree cooling towers a basic understanding of cooling tower operation and maintenance will help keep a cooling water system running in top condition, year after year by david m. Methods of efficiency improvement of the cooling tower operation will be explained and discussed. To obtain optimum performance and maximum service life, it is. Marley nc class cooling tower user manual spx cooling. Cooling towers need to be inspected every 90 days for the presence of dangerous bacteria as part of a water treatment plan. Cooling tower maintenance failure to abide by certain reporting requirements can result in dob enforcement action including the issuance of violations and fines. By understanding how cooling tower systems function, facility owners and operators can operate and maintain their systems more. The evaporative cooling unit cold water basin should be drained. Management of cooling tower blow down is necessary to prevent fouling and efficiently use the makeup water resource. Bulletin 311 equipment layout manual, available at 2.
Keeping your cooling tower in good shape requires more than just the annual inspection before startup. Code of practice for fresh water cooling towers part 2. Preventive maintenance program and plan for cooling towers. Typical closed loop cooling tower system is shown in figure 7. Chapter 8 cooling towers 801 scope and applicability. These towers utilize large fans to force air through circulated water. The cold water basin should be flushed and cleaned with the suction strainer screens in place. Jun 22, 2015 these simple preventive cooling tower maintenance tips can help users save up to 15 percent on electricity costs. Facility managers are always searching for methods and products that increase energy efficiency. It is important to establish a regular maintenance program and be sure that the program is followed. Operation and maintenance this code of practice was prepared to promote the proper use of fresh water cooling towers with guidelines for cooling tower design, installation, testing, commissioning, operation and maintenance in order to meet the energy efficiency objective with due. Cooling towers are heat transfer devices that are designed to remove heat from the hot water which returns from an hvac heat source such as a chiller, or from an industrial process such as a condenser or heat exchanger, and transfers this heat to the atmosphere. Pdf advanced cooling tower concept for commercial and. Cooling tower applications food processing facilities cooling towers are used in food processing plants all over the world.
This euromatech cooling towers training course will cover many important aspects of cooling tower process control, correct operation and water management. By understanding how cooling tower systems function, facility owners and operators can operate and maintain their systems. Marley vfd drive systems are designed to combine absolute tempera. Check bleedoff valve to make sure it is operative monthly. These studies were complicated by the fact that the cooling tower market is typically driven by one of two powerful, yet often conflicting requirements. Cooling tower water testing is required three times a week and test results must be entered into the maintenance logbook. Inspect general conditions of the cooling tower and clarity of sump water. Maintenance cooling tower cleaning any evaporativetype cooling tower must be thoroughly cleaned on warning a regular basis to minimize the growth of bacteria, including legio nella pneumophila, to avoid the risk of sickness or death. Tower location location of the cooling tower must follow these guidelines. How to clean cooling towers safely vacuum away slime, algae, sludge and mud all while your tower s online. Introduction an open circuit or evaporative cooling tower is a heat rejection device that rejects heat to the atmosphere by cooling a water stream to a lower temperature. Kelvion cooling towers combine a high cooling capacity with low energy consumption. Cooling tower maintenance program and plan template.
Maintenance service for cooling towers us embassy in peru. Model cooling tower maintenance program and plan name of facility. A guideline on good operation and maintenance practice of fresh water cooling towers pdf format 2. For building owners, building management, cooling tower industry, and water treatment operators and consultants during the covid19 pandemic. Cooling towers can be split into two distinct categories. Operation and maintenance instructions for evapco induced draft and forced draft cooling towers bulletin 1 for evapco authorized parts and service, contact your local evapco representative or the local mr. All cooling tower discharges must be in accordance with applicable state, local or federal rules and regulations. Following the recent legionnaires disease outbreaks, there is a great deal of concern and uncertainty about what is required for proper cooling tower maintenance. Chapter 8 cooling towers system shutdown and start.
Routine maintenance also helps to conserve water and extend the operating life of cooling equipment. Dutchess community college cooling tower maintenance program and plan april 1, 2016 6 continuous routine treatment will be followed. For nearly a century, we have provided exceptional quality equipment and service to the hvac, process cooling, industrial, and refrigeration markets. Pdf model cooling tower maintenance program and plan name. Other factors, which we will see, must be stated along with flow rate m3hr. Vt1 counterflow cooling towers can be used in indoor and outdoor applications. With many years of combined filtration experience, bac engineers can find a solution to a wide variety of cooling tower application filtration problems. Suptic air conditioning and refrigeration systems ranging from light commercial to industrial applications may rely on cooling towers to remove waste. The thermal capability of a cooling tower used for air condition ing is often expressed in nominal cooling tower tons. Cooling tower types cooling towers fall into two main categories. This manual is not intended to be allencompassing and thoroughly. Air, water, chemicals and heat are all elements that combine to make cooling towers.
Such notice shall include a statement that such cooling tower has been disinfected and drained in accordance with the same procedures as set forth in the shutdown plan, as specified in the maintenance. Cooling towers are an integral component of many cooling systems that provide comfort or process cooling. Water treatment chemicals utilized for cooling tower systems which contain molybdenum are prohibited in the jea sanitary sewer. Before you know it theres 12 of slime and sludge coating the basin floor. The term successor does not include new officesdivisions of the same. The purpose is to define a preventive maintenance program and plan for cooling towers at the suny polytechnic quad c building utica new york. How to clean cooling towers maintenance solutions this. Best practice guidelines water conservation in cooling towers au 1. Check the water level in the cold water basin and adjust if needed. Maintenance checklist cooling towers, closed circuit. Evaporative cooling equipment is often remotely located and periodic maintenance checks are often overlooked. May 18, 2017 cooling tower water testing is required three times a week and test results must be entered into the maintenance logbook. The water basin is an integrated part of the cooling tower casing, on this reason leakage is prevented for the examination of the spray nozzles and for maintenance on the adjustable float valve inspection hatches are provided. At least 3 feet of space shall be allowed on each access door side for crossflow towers and the minimum calculated clearance on all sides of counterflow towers, based on required intake area refer to mesans.
With the addition of steel fill series v cooling towers are also ideal for high temperature applications. Best management practice and guidance manual for cooling. They require specialized maintenance to ensure safe, efficient, and reliable operation, including an effective water treatment program. Check the line voltage, motor amperage, and water pressure. Cooling towers are recirculating water systems used to remove heat from building air conditioning equipment and industrial processes. A cooling tower is a heat rejection device that extracts waste heat to the. After 24 hours after 24 hours of operation under load, the following services should be performed. This water is often discharged to the sanitary sewer system. Covid19 interim guidance on nyc cooling tower regulations. These simple preventive cooling tower maintenance tips can help users save up to 15 percent on electricity costs. The most common is for a cooling tower that provides the required heat rejection capacity with a. For nearly a century, we have provided exceptional quality equipment and service to the hvac, process cooling, industrial, and. Upon completion of this course, you will have a better understanding of the involved incooling tower sizing and selection as well as the principles.
Maintenance and failure of the gearbox, and associated components, is often problematic with traditional systems. However, due to variations in the water source and their operating in an. Apr 01, 2016 dutchess community college cooling tower maintenance program and plan april 1, 2016 6 continuous routine treatment will be followed. The tower takes the heat from the water stream and rejects it to. The benefits of vrf cooling systems the severn group. Cooling towers provide an ideal environment for the growth and incubation of many organisms, including the legionella bacteria. The owners of cooling tower installations should maintain proper conditions of the fresh water cooling towers to minimize contamination and nuisances to the public. Recommended service intervals are the minimum for typical installations. Iron, consistency, can combine with phosphate and can also deactivate. Periods of nonuse winter layup exacerbate the problem. Batch feeding of chemicals directly into the cooling tower is not a good practice since localized damage to the tower is possible. In the case of the cooling tower company tctc cooling. Chapter 8 cooling towers system shutdown and startup.
Kroger department of mechanical engineering, university of stellenbosch, south africa keywords. Check operating level in pan and adjust float valve if necessary monthly. For evapco induced draft and forced draft cooling towers. For example, a cooling tower sized to cool 4540 m 3hr through a. An opencircuit cooling tower, commonly called a cooling tower, is a specialized heat exchanger in which two fluids air and water are. Two manual shutoff switches for fans should be installed at the cooling tower, one at grade. In open circuit systems the recirculating water returns to the tower after 1 one ton of refrigeration is equal to 12,000 btuhour. Service personnel must wear proper personal protective equipment during decontamination. This bulletin should be used as a guide to establish a program. Stick to a regular maintenance schedule to reduce the risk of legionella and prevent premature failure, recommends dan glover, technical services group manager for southland industries, a national mechanical engineering, construction, and service firm. Following the guidelines listed in this manual will help to insure the safety of all personnel who maintain the separator unit and related equipment. The cooling tower casing and the water basin are made of strong corrosionproof fibreglass reinforced polyester resin. Follow these 10 simple maintenance tips to get the most out of cooling towers.
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