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What are the ways to improve the efficiency of cooling towers

Author:Trlon  Views:  Time:2021-10-26
What are the ways to improve the efficiency of cooling towers

  Cooling towers, parallel equipment, and rising power supply temperatures all save power for refrigeration equipment. Today, the closed cooling tower manufacturer China Trlon Air Conditioning Co., Ltd. brings you three ways to increase the power of the cooling tower.OPCCooling tower noise reduction treatment manufacturer

  1. Consider speed changes.OPCCooling tower noise reduction treatment manufacturer

  Most of the components in the chilled water system will benefit from variable speed drives. In fact, most current power regulations require cooling towers to be used for these components in new systems and major retrofits. Over the past few years, the cost of cooling towers has also fallen sharply.OPCCooling tower noise reduction treatment manufacturer

  Cooling tower has great advantages over chillers, but the premise is that the condenser water temperature drop must also be realized.OPCCooling tower noise reduction treatment manufacturer

  Cooling tower fans are another opportunity to use cooling towers to save electricity. With the decrease of load and outdoor wet bulb temperature, the variable speed fan motor not only saves the energy of the fan due to the advantages of the fan law (the fan running at 50% speed will consume 12.5% ​​of the power when the fan is running at 100% speed). Provide more power for stable temperature control.OPCCooling tower noise reduction treatment manufacturer

  Variable speed pumps can provide energy-saving opportunities, but other parts of the system require careful study. In chilled water, innovations from stable flow to variable flow may require significant and valuable innovations in control valves and control sequences. In addition, it is necessary to check the variable flow capacity of the existing chillers. The low flow restriction of the chiller may reduce the economic viability of the variable chiller pump. In the case of condenser water, variable flow control may be limited by chiller flow requirements or cooling tower fouling/freezing issues. However, if the size of the pump in a stable flow system is too large, even if there is no increase in flow change during system operation, balancing the pump flow by using a balance value that reduces the speed and flow constraints can provide outstanding returns.OPCCooling tower noise reduction treatment manufacturer

  2. More is less: Running multiple parallel devices can optimize and save costs.OPCCooling tower noise reduction treatment manufacturer

  The chiller equipment generally has a higher operating power under partial load. For example, the chiller can be operated at an optimal power between 40% and 60% of the peak capacity. Compared with the cooling tower fans and system pumps operated by the pipeline method, the grading scheme can make the equipment operate at full capacity and then upgrade in stages. The classification scheme can run more equipment at a lower speed, and the classification scheme can make the equipment run at full capacity. Regarding cooling towers and coolers, operating more equipment can maximize the heat transfer surface area at all operating points, then increase power and reduce pressure drop. For the pump, the key is to save the pump regulations and operate at the best pump power point. (The pump law is similar to the electric fan law: when the pump speed is reduced, energy consumption is reduced by the cube of the reduced speed. However, any changes to the control plan need to consider the minimum cooler and cooling tower flow restrictions.OPCCooling tower noise reduction treatment manufacturer

  3. Increase the supply temperature.OPCCooling tower noise reduction treatment manufacturer

  The planned cold water supply temperature for most commercial systems ranges from 40 degrees Fahrenheit to 45 degrees Fahrenheit. This usually provides adequate dehumidification and acceptable air supply temperature for the passenger space during peak hours. However, these peak weather and load conditions are rare.OPCCooling tower noise reduction treatment manufacturer

  Implement air supply temperature reset control, which can save power in many ways. First, when the cold supply air temperature is not needed (acceptable humidity levels and no area under peak load), increasing the supply air temperature helps prevent excessive dehumidification of the space and unnecessary potential cooling. More importantly, a higher air supply setting can increase the supply temperature of chilled water, thereby significantly increasing the power of the refrigerator. Generally speaking, for every degree of increase in the cooling water temperature, the power of the cooler will increase by about 2%.OPCCooling tower noise reduction treatment manufacturer

  Other planning and control functions should also be studied to optimize energy saving effects. As mentioned earlier, cooling towers on all or some of the components should be considered. Likewise, careful checking of set points, temperature resets, and other simple control sequence changes are usually effective at the lowest cost.OPCCooling tower noise reduction treatment manufacturer

  Of course, these methods are not applicable to every system. Based on budget and financial requirements, climate, expected load conditions, and existing equipment constraints, your best solution plan will be unique and may require engineering analysis and annual energy consumption accounting.OPCCooling tower noise reduction treatment manufacturer

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