Up Time Magazine - February/March 2009 - (Page 14) over standard HID. LED’s are now being used with parking lot fixtures with great success and energy savings. Automated Control Systems The second most common of our recommended improvement measures is the addition of building automated controls or improving existing automated controls. Poor control of heating, ventilating and air conditioning systems, compressed air systems or process cooling systems represents a significant opportunity to both reduce the run time operation of equipment and to greatly increase the efficiency of equipment. The application of automated controls requires a custom solution. No two buildings or plants are alike and each must be investigated on its own merit. However, there are common techniques that apply to most equip- ment. To affect improvements in efficiencies, automated controls can be used to optimize the temperature and quantities of process variables such as water and air flow, water and air temperature, use of outdoor air for free cooling, control of exhaust fans, compressed air pressure and motor speed on equipment with variable speed drives. To affect improvements in run time, automated controls can be used to optimize operation of supply, return and exhaust fans, cooling and heating run times, compressed air and other cyclic or periodic process systems. Figure 3 - Typical Compressed Air Installation Compressed Air System Optimization Our recent study of industrial plants reveals potential for significant improvements with compressed air systems. Here are just a few areas: 1. Optimize Compressed Air pressure with its ALL-TEST PRO® CAN SEE INSIDE YOUR MOTOR AND GENERATOR use and application. In most cases, excess air pressure is used to cover a multitude of sins downstream in a typical compressed air system. Reducing air pressure at the compressor room will reduce energy costs significantly. Air piping systems are designed for the maximum air flow. Maximum conditions do not occur during every hour of the day or every day of the week. By matching the main air pressure to the load, you can reduce operating costs and ensure that the process requiring the air will not suffer. This can be done by installing end-of-main sensing and control systems or sensors at the most critical pieces of equipment. 2. Making sure compressed air piping systems are sized adequately. A small pinch point in an elaborate compressed air system can create a need to increase the compressor pressure to satisfy a small portion of the plant air. A study of the entire piping system may reveal areas that could be reworked by adding or replacing piping to increase flow and reduce pressure drops. Often a loop type system is superior to a tree branch type system. 3. Running more compressors than is needed to satisfy the load. Optimizing the number of compressors in a system can greatly reduce compressed air costs. Many new compressors unload efficiently, however there is a sweet spot with every machine. Review your compressor efficiency map with your manufacturer and find out where the most efficient operating points are and then add and drop compressors accordingly. 4. Add a small compressor to run during low plant air requirements or shutdowns. Running a 200 H.P. compressor just to keep pressure in the mains is not an efficient way to service this load. PURCHASE an ALL-TEST IV PRO 2000 Motor Circuit Analyzer and Great Savings between Oct. 1 - Dec. 30, 2008* RECEIVE FREE ITEMS VALUED AT $1,540! 1. One PERSONAL DIGITAL ASSISTANT (HP iPAC 200Series, or equal) with Microsoft Mobile® Classic, installed ATP Condition Calculator software 4.0, Office Outlook® Mobile, Windows Media Player Mobile® , and more! Value $945.00 2. One ATM2000 Training Motor, which simulates faults. Great for training all operators of the ATIV! Value $595.00. Contact ALL-TEST Pro, LLC or your local representative for details *Order must be received by 12/23/08 to guarantee shipment in 2008. If you require special arrangements please contact us. All orders are subject to credit approval. If you do not have an established account please contact our office at 860-395-2988. We accept most major credit cards. E-mail: sales@alltestpro.com Web: www.alltestpro.com ALL-TEST Pro, LLC ALL-TEST 5. Add pressure booster pumps at equipment 14 february/march 2009 http://www.alltestpro.com http://www.alltestpro.com
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